MedWorm.com provides a medical RSS filtering service. Over 6000 RSS medical sources are combined and output via different filters. This feed contains the latest items from the 'European Journal of Orthodontics' source. Wed, 08 Feb 2012 12:06:16 +0100 http://www.medworm.com/index.php?rid=5643083&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22275512%26dopt%3DAbstract In this study, duration of treatment averaged 17 months for canines displaced in impaction zone 1 or 2, 2.6 [95% confidence interval (CI) -1.0 to 6.2] months longer for those in impaction zone 3, and 7.6 (95% CI 4.1-11.1) months longer for canines displaced in impaction zone 4 or 5. This information makes it easier, through study of the panoramic radiograph, to estimate the duration of treatment and to give patients more precise information about the expected length of their treatment. PMID: 22275512 [PubMed - as supplied by publisher] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5643083 Tue, 24 Jan 2012 05:00:00 +0100 5643083 http://www.medworm.com/index.php?rid=5643082&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22275513%26dopt%3DAbstract Authors: Eklund M, Kotilainen J, Evälahti M, Waltimo-Sirén J Abstract Turner syndrome (TS) that is due to a total or partial lack of an X chromosome affects about 1 in 2000 girls. The syndrome is characterized by short stature and gonadal dysgenesis. Its documented craniofacial features include retrognathic jaws, a short mandible, and a large cranial base angle. Our aim was to find out whether the syndrome also has an effect on the pharyngeal airway space. We retrospectively analysed lateral cephalograms of 35 TS subjects whose age ranged from 6.5 to 21 years and of 35 healthy female controls matched for age. On those, we did 7 linear and 10 angular cephalometric measurements and 9 pharyngeal measurements. Differences between the subjects with TS and their controls were assessed ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5643082 Tue, 24 Jan 2012 05:00:00 +0100 5643082 http://www.medworm.com/index.php?rid=5625488&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22267705%26dopt%3DAbstract This report is a retrospective longitudinal cohort study of 45 consecutive non-syndromic individuals with UCLP, 19 from the Stockholm Cleft Team, and 26 from the Oslo Cleft Team. The treatment protocols in the two teams differed. The initial transversal width in infants was measured at three levels on study casts. The width was correlated to variables obtained from lateral cephalograms at 17 years of age, from rating of dental arch relationship and to treatment variables obtained from the medical records: existence of Simonart's band, missing maxillary teeth, duration of orthopaedic/orthodontic treatment, and the need for orthognathic surgery. The initial width of the middle part of the cleft and final maxillary inclination (NSL/NL) showed a weak correlation (P < 0.05); the wider the cl... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5625488 Fri, 20 Jan 2012 05:00:00 +0100 5625488 http://www.medworm.com/index.php?rid=5625487&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22267706%26dopt%3DAbstract Authors: Migliorati M, Benedicenti S, Signori A, Drago S, Cirillo P, Barberis F, Silvestrini Biavati A Abstract The thread shape factor (TSF) to evaluate the relationships between geometrical characteristics and mechanical properties of the temporary anchorage devices (TADs) has recently been introduced. This in vitro experimental study evaluated in 30 different tests with three TADs: ORTHOImplant (1.8 mm diameter and 10 mm length; 3M Unitek), Tomas (1.6 mm diameter and 10 mm length; Dentaurum), and Orthoeasy (1.7 mm diameter and 10 mm length; Forestadent). Scanning electron microscopy images were acquired for each TAD to measure the TSF; afterwards, the maximum insertion torque (MIT) was evaluated and thereafter pull-out tests on two differently designed organic bone analogs were ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5625487 Fri, 20 Jan 2012 05:00:00 +0100 5625487 http://www.medworm.com/index.php?rid=5605344&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22250076%26dopt%3DAbstract Authors: Livas C, Delli K Abstract The aim of this work was to investigate the published evidence on the comparison of self-perception and diagnosis of orthodontic treatment need. A search of Cochrane Library, MEDLINE, Scopus databases, and archives of two orthodontic journals was carried out from January 1966 to August 2011 by the two authors using Medical Subject Heading terms. Studies that investigated solely either self-perception of orthodontic need by laypersons or assessment of orthodontic need by professionals were excluded from the data analysis. The methodological soundness of each study and the aggregate level of evidence were evaluated according to predetermined criteria. Moderate level of evidence, the relatively highest grade, was assigned to 9.1 per cent of the 22 st... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5605344 Mon, 16 Jan 2012 05:00:00 +0100 5605344 http://www.medworm.com/index.php?rid=5605346&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22247224%26dopt%3DAbstract Authors: Tostes M, Mucha JN, Lopes Coutinho TC, da Silva EM Abstract This in situ study evaluated the influence of the bonding agent on demineralization of acid-etched human enamel. Enamel blocks obtained from 20 human molars (four blocks per tooth) were divided into five groups. For the control groups, healthy control (HC, no treatment) and acid-etched control (EC, etching with 35 per cent phosphoric acid for 20 seconds), the specimens were obtained by sectioning in half, one block from each tooth. For the experimental groups, experimental etched group (EE), experimental Concise™ group (CE), and experimental Transbond™ group (TE), all specimens were etched with 35 per cent phosphoric acid for 20 seconds (EE) and treated with Concise™ enamel bond (CE) and Transbond™ XT prim... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5605346 Thu, 12 Jan 2012 05:00:00 +0100 5605346 http://www.medworm.com/index.php?rid=5605345&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22247225%26dopt%3DAbstract Authors: Flórez-Moreno GA, Marín-Restrepo LM, Isaza-Guzmán DM, Tobón-Arroyave SI Abstract Deoxypyridinoline (DPD) and bone-specific alkaline phosphatase (BAP) have been regarded as systemic determinants of bone remodelling. Owing this fact, this study aimed to determine whether the variations in the salivary concentration of these two biomarkers as detected through a longitudinal follow-up with four consecutive visits may be linked with the different phases of orthodontic tooth movement (OTM). Twenty-two healthy subjects who required fixed appliance therapy not involving tooth extractions/surgical procedures were selected. Unstimulated whole saliva samples were collected from each patient prior to fitting the orthodontic appliances and 24-48 hours, 2 weeks, and 5 weeks after th... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5605345 Thu, 12 Jan 2012 05:00:00 +0100 5605345 http://www.medworm.com/index.php?rid=5537074&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22158610%26dopt%3DAbstract Authors: Zuccati G, Casci S, Doldo T, Clauser C Abstract The aim of this study was to review recent randomized clinical trials (RCTs) dealing with the effectiveness of various modalities of orthopaedic/orthodontic expansion of maxillary arches with crossbite and the associated 6 month post retention stability. The study selection criteria included RCTs involving subjects with maxillary deficiency with crossbite, with no limits of age. The authors searched the following electronic databases from 1999 to January 2011: the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, LILACS, and WEB of SCIENCE. The search strategy resulted in 12 articles meeting the inclusion criteria. Most of the studies did not meet major methodological requirements; some studies were not relev... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5537074 Fri, 09 Dec 2011 05:00:00 +0100 5537074 http://www.medworm.com/index.php?rid=5459431&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22102332%26dopt%3DAbstract Authors: Cousley RR PMID: 22102332 [PubMed - in process] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5459431 Thu, 01 Dec 2011 05:00:00 +0100 5459431 http://www.medworm.com/index.php?rid=5459430&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22102333%26dopt%3DAbstract Authors: Whang CZ, Bister D, Sherriff M PMID: 22102333 [PubMed - in process] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5459430 Thu, 01 Dec 2011 05:00:00 +0100 5459430 http://www.medworm.com/index.php?rid=5459427&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22120901%26dopt%3DAbstract Authors: Dumbryte I, Linkeviciene L, Malinauskas M, Linkevicius T, Peciuliene V, Tikuisis K Abstract The purpose of this study was to evaluate and compare enamel micro-crack characteristics of adult patients before and after removal of metal brackets. After the examination with scanning electron microscopy (SEM), 45 extracted human teeth were divided into three groups of equal size: group 1, the teeth having enamel micro-cracks, group 2, the teeth without initial enamel micro-cracks, and group 3, control group to study the effect of dehydration on existing micro-cracks or formation of new ones. For all the teeth in groups 1 and 2, the same bonding and debonding procedures of metal brackets were conducted. The length and width of the longest enamel micro-crack were measured for all ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5459427 Fri, 25 Nov 2011 05:00:00 +0100 5459427 http://www.medworm.com/index.php?rid=5459428&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22117023%26dopt%3DAbstract Authors: Lin H, Quan C, Guo C, Zhou C, Wang Y, Bao B Abstract The psychosocial impact of dental aesthetics questionnaire (PIDAQ) could reflect dental aesthetic degrees evaluated by traditional dental aesthetic indices. However, no Chinese version of PIDAQ has been used. The aim of this study was to translate the original English version of PIDAQ into Chinese and to assess the validity and reliability of the Chinese version for application in Chinese young adults. The questionnaire was translated into Chinese, back translated, pre-tested, and cross-culturally adapted. Subsequently, the Chinese version of PIDAQ along with two other scales, the aesthetic component of Index of Orthodontic Treatment Need and the Perception of Occlusion Scale, were administered to 436 young adults from t... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5459428 Thu, 24 Nov 2011 05:00:00 +0100 5459428 http://www.medworm.com/index.php?rid=5459429&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22109942%26dopt%3DAbstract Authors: Papadopoulou K, Keilig L, Eliades T, Krause R, Jäger A, Bourauel C Abstract The aim of the present work was to evaluate the biomechanical behaviour of the periodontal ligament (PDL) with respect to force development with different controlled loading velocities. For this purpose, an in vitro experimental study was performed on 18 minipig jaw segments. Displacements with variable increasing loading time were applied to one premolar crown of each jaw segment into the linguobuccal direction through a force sensor provided by a specialized biomechanical set-up. The predefined displacement values to be achieved were 0.1 and 0.2 mm. Each of the given displacement increments was applied on the specimens with a linear displacement increase employing the following time spans: 5, 10... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5459429 Tue, 22 Nov 2011 05:00:00 +0100 5459429 http://www.medworm.com/index.php?rid=5424745&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22084202%26dopt%3DAbstract Authors: Mucedero M, Ricchiuti MR, Cozza P, Baccetti T Abstract The aim of the study was to analyse the prevalence and distribution of buccally displaced canines (BDCs) in subjects scheduled for orthodontic treatment and to investigate the association between BDC and sagittal, vertical, and transverse dentoskeletal relationships. A study sample of 1852 subjects was examined, and it was divided randomly into two groups. A first group of 252 subjects served as control group: the 'reference' prevalence rates for the examined parameters were calculated in this group. The remaining 1600 subjects comprised the sample from which the experimental BDC group was derived. Presence of unilateral or bilateral maxillary BDC, ANB, and SN GOGn angles for sagittal and vertical skeletal relationsh... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5424745 Mon, 14 Nov 2011 05:00:00 +0100 5424745 http://www.medworm.com/index.php?rid=5424746&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22058110%26dopt%3DAbstract Authors: Ohtonen J, Vallittu PK, Lassila LV Abstract To compare force levels obtained from glass fibre-reinforced composite (FRC) archwires. Specifically, FRC wires were compared with polymer matrices having different dimethacrylate monomer compositions. FRC material (E-glass provided by Stick Tech Ltd, Turku, Finland) with continuous unidirectional glass fibres and four different types of dimethacrylate monomer compositions for the resin matrix were tested. Cross-sectionally round FRC archwires fitting into the 0.3 mm slot of a bracket were divided into 16 groups with six specimens in each group. Glass fibres were impregnated by the manufacturer, and they were initially light-cured by hand light-curing unit or additionally post-cured in light-curing oven. The FRC archwire specimen... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5424746 Fri, 04 Nov 2011 04:00:00 +0100 5424746 http://www.medworm.com/index.php?rid=5382456&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22051535%26dopt%3DAbstract Authors: Moesi B, Dyer F, Benson PE Abstract The aim was to determine if bracket prescription has any effect on the subjective outcome of pre-adjusted edgewise treatment as judged by professionals. This retrospective observational assessment study was undertaken in the Orthodontic Department of the Charles Clifford Dental Hospital, Sheffield, UK. Forty sets of post-treatment study models from patients treated using a pre-adjusted edgewise appliance (20 Roth and 20 MBT) were selected. The models were masked and shown in a random order to nine experienced orthodontic clinicians, who were asked to assess the quality of the outcome, using a pre-piloted questionnaire. The principal outcome measure was the Incisor and Canine Aesthetic Torque and Tip (ICATT) score for each of the 40 post-... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5382456 Wed, 02 Nov 2011 04:00:00 +0100 5382456 http://www.medworm.com/index.php?rid=5382455&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22051536%26dopt%3DAbstract Authors: Yu IJ, Kook YA, Sung SJ, Lee KJ, Chun YS, Mo SS Abstract The purposes of this study were to mechanically evaluate distalization modalities through the application of skeletal anchorage using finite element analysis. Base models were constructed from commercial teeth models. A finite element model was created and three treatment modalities were modified to make 10 models. Modalities 1 and 2 placed mini-implants in the buccal side, and modality 3 placed a plate on the palatal side. Distalization with the palatal plate in modality 3 showed bodily molar movement and insignificant displacement of the incisors. Placing mini-implants on the buccal side in modalities 1 and 2 caused the first molar to be distally tipped and extruded, while the incisors were labially flared and intr... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5382455 Wed, 02 Nov 2011 04:00:00 +0100 5382455 http://www.medworm.com/index.php?rid=5382454&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22051537%26dopt%3DAbstract Authors: Kojima Y, Fukui H Abstract The purpose of this article is to simulate long-term movement of maxillary teeth connected with an archwire and to clarify the difference between the initial tooth movement and the long-term orthodontic movement. Initial tooth movement was calculated based on the elastic deformation of the periodontal ligament. Orthodontic tooth movement was simulated based on the bone remodeling law of the alveolar bone, while consequentially updating the force system. In the initial tooth movement, all teeth tipped individually due to an elastic deflection of the archwire. In the long-term movement, the maxillary teeth moved as one united body, as if the archwire were a rigid material. Difference of both movement patterns was due to the change in force system d... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5382454 Wed, 02 Nov 2011 04:00:00 +0100 5382454 http://www.medworm.com/index.php?rid=5382453&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22051538%26dopt%3DAbstract The objectives of this study were to compare the ratings of professionals and laypeople with and without a cleft regarding the facial aesthetics of adult patients previously treated for orofacial clefting. The necessity for further treatment, as perceived by the respective groups, is also compared. The design of the study was a cross-sectional study. Professionals (two plastic surgeons, one dentist, one orthodontist, and one psychologist) and laypeople (one male and one female adult without a cleft and one male and one female adult with a cleft) were recruited to rate photographs of 80 non-syndromic cleft patients treated by the Australian Craniofacial Unit from 1975 to 2009. Facial aesthetics were measured by a visual analogue scale (VAS; 0-100 mm). High values indicated good aesthetics. ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5382453 Wed, 02 Nov 2011 04:00:00 +0100 5382453 http://www.medworm.com/index.php?rid=5382459&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22045693%26dopt%3DAbstract Authors: Pesce RE, Uribe F, Janakiraman N, Neace WP, Peterson DR, Nanda R Abstract The purpose of this study was to compare the activation and deactivation forces generated during first-order archwire deflections when different sizes and types of NiTi wires are paired with conventional and self-ligating brackets (SLBs) and to evaluate the rotational control between these same archwire and bracket combinations. Four maxillary premolar SLBs (Damon 3MX, SmartClip, Carriere, and In-Ovation R) and one conventional twin bracket (Victory) were paired with seven archwires [0.014, 0.016, 0.018, 0.016 × 0.022 Ultra Therm (thermal A(f)80-90°F), 0.016, 0.018 SPEED Supercable, and 0.017 × 0.025 Turbo]. A cantilever test design was used and 10 trials per bracket/archwire combination were perf... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5382459 Mon, 31 Oct 2011 04:00:00 +0100 5382459 http://www.medworm.com/index.php?rid=5382458&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22045694%26dopt%3DAbstract Authors: Dimberg L, Lennartsson B, Söderfeldt B, Bondemark L Abstract The aim of this longitudinal study was to compare the prevalence of malocclusion at ages 3 and 7 years in a sample of children, exploring the hypothesis that prevalence of malocclusion is higher at 3 than at 7 years of age and may be influenced by sucking habits. The study sample comprised 386 children (199 girls and 187 boys), aged 3 years at study start, sourced from three Public Dental Service clinics in Sweden. Malocclusion was diagnosed by clinical examination, using a specific protocol. Data on allergy, traumatic injuries, sucking habits, and breathing pattern including nocturnal breathing disturbances were obtained by means of a questionnaire answered by child and parent in conjunction with the initial an... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5382458 Mon, 31 Oct 2011 04:00:00 +0100 5382458 http://www.medworm.com/index.php?rid=5382457&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22045695%26dopt%3DAbstract Authors: El H, Palomo JM Abstract The aim of this study was to evaluate the oropharyngeal (OP) and nasal passage (NP) volumes along with various airway variables of patients with normal nasorespiratory functions having different dentofacial skeletal patterns and to evaluate the correlations between different variables and the airway. One hundred and one patients (57 males and 44 females, aged 14-18 years) having pre-treatment cone beam computed tomography images and complete medical records were selected. The patients were divided into five groups as Class I (CI, 81 ≥ SNA ≥ 77; 80 ≥ SNB ≥ 76; 3 ≥ ANB ≥ 1), Class II maxillary protrusion (CIIMaxP, SNA > 81; 80 ≥ SNB ≥ 76; ANB > 3), Class II mandibular retrusion (CIIMandR, 81 ≥ SNA ≥ 77; SNB < 76; ANB >... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5382457 Mon, 31 Oct 2011 04:00:00 +0100 5382457 http://www.medworm.com/index.php?rid=5382461&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22023883%26dopt%3DAbstract This study investigated the remodelling of the alveolar bone and related periodontal structures during orthodontic relapse in rat molars. The maxillary right first molars of 35 Wistar rats were moved mesially by a fixed orthodontic appliance for 10 days and the contralateral molars served as controls. The appliances were removed and six animals killed. The molars were allowed to relapse, and the remaining animals were sacrificed at 1, 3, 5, 7, 14, and 21 days. The jaws were sectioned and stained with haematoxylin and eosin and tartrate-resistant acid phosphatase (TRAP). One day after appliance removal, the molars relapsed to a mean 62.5 per cent of the achieved OTM and then steadily relapsed to 86.1 per cent at 21 days. The number of osteoclasts situated along the alveolar bone of the firs... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5382461 Mon, 24 Oct 2011 04:00:00 +0100 5382461 http://www.medworm.com/index.php?rid=5382460&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22023884%26dopt%3DAbstract Authors: Gatto E, Matarese G, Di Bella G, Nucera R, Borsellino C, Cordasco G Abstract The aim of this study was to investigate the mechanical properties of superelastic and thermal nickel-titanium (NiTi) archwires for correct selection of orthodontic wires. Seven different NiTi wires of two different sizes (0.014 and 0.016 inches), commonly used during the alignment phase, were tested. A three-point bending test was carried out to evaluate the load-deflection characteristics. The archwires were subjected to bending at a constant temperature of 37°C and deflections of 2 and 4 mm.Analysis of variance showed that thermal NiTi wires exerted significantly lower working forces than superelastic wires of the same size in all experimental tests (P < 0.05). Wire size had a significant e... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5382460 Sun, 23 Oct 2011 04:00:00 +0100 5382460 http://www.medworm.com/index.php?rid=5346604&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22015820%26dopt%3DAbstract This study investigates the effect of bracket material on torque expression. Torque exerted by a rotating archwire on each bracket will be measured as well as the relative deformation of each bracket slot. A total of 60 tests were performed where archwires were rotated within a bracket slot to produce torque within a bracket. Thirty Ormco Orthos Ti and 30 Orthos SS were compared to investigate the effect of torque on bracket material. Each bracket was mounted on a six-axis load cell that measured forces and moments in all directions. The archwire was rotated from an initial angle of 0 degree in 3 degrees increments to maximum angle of 51 degrees and then returned to the initial position. An overhead camera took images at each 3 degrees increment. The bracket images were post-processed usin... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5346604 Wed, 19 Oct 2011 04:00:00 +0100 5346604 http://www.medworm.com/index.php?rid=5346603&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22015821%26dopt%3DAbstract Authors: Izadi MI, Sherriff M, Cobourne MT Abstract This investigation measured and compared shear bond strength (SBS) and adhesive remnant indices (ARIs) of Damon3 and Damon3MX brackets bonded with their recommended primer/adhesive combination or Transbond XT primer/adhesive, with APC II brackets bonded using Transbond XT. Sixty non-carious human third molars were collected and randomly divided into six equal groups of 10. Amongst these, one group was used to standardize the testing methodology, with the remainder constituting the five experimental groups. Upper right central incisor brackets represented each bracket type. Specifically, Damon3 brackets were bonded using either OrthoSolo primer/Blugloo (recommended) or Transbond XT primer/adhesive; Damon3MX brackets were bonded usi... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5346603 Wed, 19 Oct 2011 04:00:00 +0100 5346603 http://www.medworm.com/index.php?rid=5346602&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22015822%26dopt%3DAbstract Authors: Koletsi D, Pandis N, Polychronopoulou A, Eliades T Abstract In orthodontics, multiple site observations within patients or multiple observations collected at consecutive time points are often encountered. Clustered designs require larger sample sizes compared to individual randomized trials and special statistical analyses that account for the fact that observations within clusters are correlated. It is the purpose of this study to assess to what degree clustering effects are considered during design and data analysis in the three major orthodontic journals. The contents of the most recent 24 issues of the American Journal of Orthodontics and Dentofacial Orthopedics (AJODO), Angle Orthodontist (AO), and European Journal of Orthodontics (EJO) from December 2010 backwards we... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5346602 Wed, 19 Oct 2011 04:00:00 +0100 5346602 http://www.medworm.com/index.php?rid=5346601&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22015823%26dopt%3DAbstract Authors: Tsiopas N, Nilner M, Bondemark L, Bjerklin K Abstract Dentoalveolar changes in adulthood have not been extensively documented. Such changes may have important implications for the long-term stability of orthodontic treatment. To analyse occlusal and dentoalveolar changes in adults from the age of 20 years to the age of 60 years. The material comprised 18 Swedish dentists, 16 men and 2 women, with no missing teeth and no prosthodontic or orthodontic treatment. Measurements were recorded on study casts made between 1949 and 1989 at the Department of Stomatognathic Physiology at the Faculty of Odontology in Malmö, thus documenting changes over an average period of 38.4 years. Malocclusion traits, overbite, overjet, dental arch length and width, and Little's irregularity inde... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5346601 Wed, 19 Oct 2011 04:00:00 +0100 5346601 http://www.medworm.com/index.php?rid=5346600&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22015824%26dopt%3DAbstract Authors: Normando D, Araújo AM, Marques ID, Barroso Tavares Dias CG, Miguel JA Abstract Dental material science has paid more attention to mechanical properties of as-received materials than to changes produced after intraoral exposure. Orthodontic archwires when exposed to the intraoral environment have shown a significant increase in the degree of debris, surface roughness (Ra), and frictional force. The purpose of this split-mouth study was to evaluate the effects of two methods of archwire cleaning on these variables after clinical use for 8 weeks. For eight individuals, four sets of three brackets each (n = 32) were bonded from the first molar to the first premolar. A passive segment of 0.019 × 0.025 inch stainless steel (SS) archwire was inserted into the brackets and tied ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5346600 Wed, 19 Oct 2011 04:00:00 +0100 5346600 http://www.medworm.com/index.php?rid=5346605&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21976635%26dopt%3DAbstract In conclusion, there was high intra-examiner and inter-examiner agreement using the MHB scoring system. It also correlates well with the 5-year-old and GOSLON indices and has been shown to be a much more sensitive scoring system. PMID: 21976635 [PubMed - as supplied by publisher] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5346605 Wed, 05 Oct 2011 04:00:00 +0100 5346605 http://www.medworm.com/index.php?rid=5346606&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21969524%26dopt%3DAbstract This study evaluates the effects of an orthopaedic functional appliance worn full time to reduce asymmetric mandibular growth in JIA patients.Twenty-two JIA patients with unilateral TMJ involvement were included in the study (mean age 7.5 years, range: 3.8-13.8 years). They all received orthopaedic treatment with a functional appliance, a so-called distraction splint (mean treatment time 57 months). Panoramic tomograms or cone beam-computerized tomograms were taken before and within 12 months after treatment cessation. At both time points, the ratio between the healthy and the affected side of the mandible was evaluated in terms of inter-side differences in condylar height, ramus height, and total vertical mandibular height.Orthopaedic functional treatment reduced mandibular asymmetries in... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5346606 Mon, 03 Oct 2011 04:00:00 +0100 5346606 http://www.medworm.com/index.php?rid=5282845&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21118908%26dopt%3DAbstract Authors: Albajalan OB, Samsudin AR, Hassan R Abstract The aim of this study was to compare the skeletal and soft tissue patterns between obstructive sleep apnoea (OSA) patients and control group of non-OSA patients. Fifty Malays (32 males and 18 females) aged 18-65 years divided into two equal groups 25 (17 males and 8 females) with OSA and a control group 25 subjects (15 males and 10 females). Both groups were diagnosed using polysomnography. Nineteen variables related to craniofacial skeletal and soft tissue morphology were measured on lateral cephalometric films. Analysis of covariance was used to compare the means between the two groups. The results showed that OSA subjects had a significant increase in body mass index (BMI) and neck circumference than the control group. The so... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5282845 Sat, 01 Oct 2011 04:00:00 +0100 5282845 http://www.medworm.com/index.php?rid=5282844&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21118911%26dopt%3DAbstract Authors: Germec-Cakan D, Taner T, Akan S Abstract The aim of this study was to investigate upper respiratory airway dimensions in non-extraction and extraction subjects treated with minimum or maximum anchorage. Lateral cephalograms of 39 Class I subjects were divided into three groups (each containing 11 females and 2 males) according to treatment procedure: group 1, 13 patients treated with extraction of four premolars and minimum anchorage; group 2, 13 cases treated non-extraction with air-rotor stripping (ARS); and group 3, 13 bimaxillary protrusion subjects treated with extraction of four premolars and maximum anchorage. The mean ages of the patients were 18.1 ± 3.7, 17.8 ± 2.4, and 15.5 ± 0.88 years, respectively. Tongue, soft palate, hyoid position, and upper airway measu... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5282844 Sat, 01 Oct 2011 04:00:00 +0100 5282844 http://www.medworm.com/index.php?rid=5282843&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21952880%26dopt%3DAbstract Authors: Rice D PMID: 21952880 [PubMed - in process] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5282843 Sat, 01 Oct 2011 04:00:00 +0100 5282843 http://www.medworm.com/index.php?rid=5282842&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21965182%26dopt%3DAbstract Authors: Joury E, Marcenes W, Johal A Abstract The role of psychosocial factors in predicting orthodontic treatment outcome has not been investigated before. Thus, the current study aimed to test whether psychosocial factors, namely 'daily hassles', resiliency, and family environment, can predict orthodontic treatment outcome at the end of 1 year of active treatment. A hospital-based, prospective, longitudinal design was adopted including 145 consecutively selected 12- to 16-year-old male and female adolescents. Baseline psychosocial data were collected by a validated child self-completed questionnaire before the placement of fixed appliances. Thereafter, adolescents were followed up on a monthly basis to collect information relating to their daily hassles and treatment adherence. ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5282842 Wed, 28 Sep 2011 04:00:00 +0100 5282842 http://www.medworm.com/index.php?rid=5249487&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21934112%26dopt%3DAbstract Authors: Toma AM, Zhurov AI, Playle R, Marshall D, Rosin PL, Richmond S Abstract The aim of this study is to identify key components contributing to facial variation in a large population-based sample of 15.5-year-old children (2514 females and 2233 males).The subjects were recruited from the Avon Longitudinal Study of Parents and Children. Three-dimensional facial images were obtained for each subject using two high-resolution Konica Minolta laser scanners. Twenty-one reproducible facial landmarks were identified and their coordinates were recorded. The facial images were registered using Procrustes analysis. Principal component analysis was then employed to identify independent groups of correlated coordinates.For the total data set, 14 principal components (PCs) were identified ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5249487 Tue, 20 Sep 2011 04:00:00 +0100 5249487 http://www.medworm.com/index.php?rid=5249486&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21934113%26dopt%3DAbstract In conclusion, the surfaces of metal brackets can be successfully modified by the PBIID method to create a DLC layer, and the DLC-coating process significantly reduces frictional forces. PMID: 21934113 [PubMed - as supplied by publisher] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5249486 Tue, 20 Sep 2011 04:00:00 +0100 5249486 http://www.medworm.com/index.php?rid=5249489&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21926313%26dopt%3DAbstract This study used a geometrical model of a lateral cephalogram with standard Caucasian average values for SN length, position of A and B points for male and female patients. Linear and angular measurements were digitized using Dolphin™ Imaging software. N was moved in antero-posterior and vertical planes and subsequent changes of SNA, SNB, and ANB were measured and the Eastman correction applied. The correction overestimated the SNA and ANB values in the opposite direction to the directly measured SNA and ANB when N moved posteriorly towards S: The directly measured values tended to show a Class II relationship but the correction indicated a Class III skeletal base. As N moved anteriorly, the Eastman correction overestimated the measured Class III skeletal relationship; SNA did not fall be... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5249489 Fri, 16 Sep 2011 04:00:00 +0100 5249489 http://www.medworm.com/index.php?rid=5249488&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21926314%26dopt%3DAbstract The objective of this study was to investigate the rebonding effect of a new silane coupling agent on various ceramic brackets bonded to ceramic specimen. Different ceramic brackets (Fascination 2, Clarity SL, and In-OvationC) were assigned to three groups: rebonding with new silane coupling agent, rebonding with conventional silane coupling agent, or regular bonding as control (n = 16). Bracket adhesion was calculated with a shear test in a universal testing machine. The bracket-composite-ceramic interface was evaluated using the adhesive remnant index score. One-way analysis of variance was applied for inferential statistics. Rebonding with the new silane coupling agent resulted in high shear bond strengths (SBSs; mean values: 37.44-41.24 MPa) and ceramic specimen fractures. Rebonding wi... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5249488 Fri, 16 Sep 2011 04:00:00 +0100 5249488 http://www.medworm.com/index.php?rid=5234578&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21921301%26dopt%3DAbstract In conclusion, patients with anterior versus posterior unilateral crossbite show different functional characteristics depending on which dental region is involved. PMID: 21921301 [PubMed - as supplied by publisher] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5234578 Thu, 15 Sep 2011 04:00:00 +0100 5234578 http://www.medworm.com/index.php?rid=5220545&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21911841%26dopt%3DAbstract Authors: Pakshir HR, Zarif Najafi H, Hajipour S Abstract Bond failure after rebonding for newly placed brackets can be reduced by appropriate enamel surface treatment. This in vitro study investigated the effect of two enamel surface treatments on the bond strength of metallic brackets in the rebonding process. After debonding the brackets and removing the residual adhesive on the enamel surface of 50 upper premolar teeth, the teeth were divided into two equal groups. In the first group, the enamel surface was etched with phosphoric acid 37 per cent, and in the second group, the teeth were sandblasted prior to acid etching. After bonding of the new brackets, the shear bond strength (SBS), probability of bond failures, and adhesive remnant index (ARI) were determined and compared wi... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5220545 Mon, 12 Sep 2011 04:00:00 +0100 5220545 http://www.medworm.com/index.php?rid=5220544&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21911842%26dopt%3DAbstract This study compared the craniofacial differences of white male children from Central-Western Brazil with DS (n = 30, mean age: 8 years 3 months), skeletal Class III profile with maxillary deficiency (n = 30, mean age: 7 years 9 months), and skeletal Class I profile (n = 30, mean age: 8 years 2 months), using lateral cephalometric radiographs. The differences among the three groups were compared with analysis of variance and Tukey's tests. The DS group showed reduced anterior cranial base (S-N, P < 0.001] and facial dimensions (Co-Gn, N-Me, N-ANS, and ANS-Me, P < 0.001), except in posterior dimensions (S-Go, P < 0.005; Ar-Go, P > 0.005). Maxillary length (Co-A, P < 0.001) and facial convexity (NAP, P < 0.005) were reduced when compared with the control group, although maxi... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5220544 Mon, 12 Sep 2011 04:00:00 +0100 5220544 http://www.medworm.com/index.php?rid=5220543&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21911843%26dopt%3DAbstract Authors: Mirabella AD, Kokich VG, Rosa M Abstract The aim of the study was to test the hypothesis that the gene defect causing congenital absence of maxillary lateral incisors also causes narrowing of the dentition. A total of 81 patients with one or two congenitally missing lateral incisors were retrieved; 52 (64.2 per cent) patients presented bilateral agenesis, whereas 29 (35.8 per cent) had unilateral agenesis. The control group consisted of 90 consecutively treated patients. The largest mesiodistal crown dimension for all teeth, except for the maxillary second and third molars, was measured on plaster casts using a digital caliper to the nearest 10th of a millimetre. Statistical testing was performed using the analysis of variance model (P < 0.05) to test for differences in... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5220543 Mon, 12 Sep 2011 04:00:00 +0100 5220543 http://www.medworm.com/index.php?rid=5220546&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21896884%26dopt%3DAbstract Authors: Thilander B, Bjerklin K Abstract The aim of this work was to update the bibliography regarding the concept of 'temporomandibular disorder (TMD)' and 'posterior crossbite' and try to find out if there is any association between some special signs/symptoms of TMD and type of posterior crossbite. A literature search from 1970 to 2009, due to specified criterion, resulted in 14 publications that were found to be relevant for the present systematic review. An association between TMD and posterior crossbite (Yes-group) was reported as often as absence of such a relationship (No-group). The samples in the two groups showed similarities as well as differences with respect to number, gender, and age. Most articles reported only on 'presence' or 'absence' of crossbite and only few o... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5220546 Tue, 06 Sep 2011 04:00:00 +0100 5220546 http://www.medworm.com/index.php?rid=5179871&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21876219%26dopt%3DAbstract Authors: Halicioglu K, Yavuz I Abstract The aim of the present study was to investigate and compare the effects of conventional Hyrax screw treatment and memory screw treatment on skeletal and dentoalveolar structures. Thirty-two patients with maxillary transversal deficiency were divided into two groups. The memory-screw group included 17 patients (nine females and eight males), while the Hyrax-screw group comprised 15 patients (eight females and seven males). Mean ages of the subjects in the memory-screw and Hyrax-screw groups were 13.00 ± 1.29 and 12.58 ± 1.50 years, respectively. Plaster models and postero-anterior cephalograms were taken from the patients at the beginning of the treatment (T1) and at the end of expansion (T2) and retention periods (T3). The mean expansion pe... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5179871 Sun, 28 Aug 2011 23:00:00 +0100 5179871 http://www.medworm.com/index.php?rid=5179872&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21873271%26dopt%3DAbstract Authors: Koos B, Horn H, Schaupp E, Axmann D, Berneburg M Abstract Precise knowledge of lip and tongue movements is limited. Conventional investigative methods do not allow for their precise representation and analysis. In the present study, electromagnetic articulography (EMA) was used to define normal values for lip movements based on consonant-vowel-consonant (CVC) sequences and for tongue movements based on vowel-consonant-vowel (VCV) sequences. The study population included 25 volunteers (11 males and 14 females) with a median age of 26 (23 to 29) years. An EMA unit was used to conduct the measurements. For this purpose, the volunteers repeated a number of VCV and CVC text sequences 10 times each during two different body positions (upright and relaxed). Statistical analysis (... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5179872 Wed, 24 Aug 2011 23:00:00 +0100 5179872 http://www.medworm.com/index.php?rid=5160055&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21852288%26dopt%3DAbstract This study provides further evidence of the appropriateness of the FEA as an investigational tool in relevant research. PMID: 21852288 [PubMed - as supplied by publisher] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5160055 Tue, 16 Aug 2011 23:00:00 +0100 5160055 http://www.medworm.com/index.php?rid=5142303&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21846874%26dopt%3DAbstract Authors: Naini FB, Donaldson AN, Cobourne MT, McDonald F Abstract The purpose of this investigation was to undertake an objective and quantitative evaluation of how mandibular prominence influences perceived attractiveness. The mandibular prominence of an idealized profile image was altered in 2 mm increments from -16 to 12 mm, in order to represent retrusion and protrusion of the mandible, respectively. These images were rated on a 7-point Likert scale by a preselected group of pre-treatment orthognathic patients, clinicians, and laypeople. A duplicate image was used to assess intra-examiner reliability. From the results of this study, it is recommended that in treatment planning to alter the sagittal prominence of the mandible in an individual with an otherwise normal soft tissue... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5142303 Mon, 15 Aug 2011 23:00:00 +0100 5142303 http://www.medworm.com/index.php?rid=5142304&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21832270%26dopt%3DAbstract Authors: Ghoneima A, Kula K Abstract The purpose of the present study was to evaluate the accuracy and reliability of airway volume digital measurements of cone-beam computed tomography (CBCT) compared with the manual measurements of an airway model. An acrylic airway model was constructed and attached to a human dry skull in the natural position of the airway passage. The total and internal airway volumes, as well as the most constricted airway area, were measured manually on the model and on the CBCTs taken after the model was attached to the skull. The CBCT images were analysed using the Dolphin3D (Dolphin Imaging & Management solutions, Chatsworth, California, USA) software. Reliability and accuracy were assessed by using intraclass correlation and Student's t-test. A P ≤... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5142304 Tue, 09 Aug 2011 23:00:00 +0100 5142304 http://www.medworm.com/index.php?rid=5142306&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21828357%26dopt%3DAbstract Authors: Akan S, Kocadereli I, Aktas A, Tasar F Abstract The aim of this study was to evaluate the effects of intrusion of the maxillary posterior teeth with zygomatic anchorage on the dentofacial system, on electromyographic (EMG) activity of the masticatory muscles, and on vibration of the temporomandibular joint. The study sample consisted of 19 subjects (13 females, 6 males) with a mean age of 17.7 years. Lateral cephalometric and posteroanterior (PA) radiographs, EMG, and electrovibratographic (EVG) records were obtained before (T0) and after (T1) intrusion. Paired t- and Wilcoxon signed ranks tests were used for statistical evaluation. Maxillary molar intrusion of 3.37 ± 1.21 mm was obtained with a force of 400 g in an average period of 6.84 ± 1.64 months. At T1, all measur... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5142306 Mon, 08 Aug 2011 23:00:00 +0100 5142306 http://www.medworm.com/index.php?rid=5142305&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21828358%26dopt%3DAbstract This study clearly demonstrated that 3D digital models of the 5-year-olds' Index could prove to be a promising alternative to physical models of the 5-year-olds' Index. PMID: 21828358 [PubMed - as supplied by publisher] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5142305 Mon, 08 Aug 2011 23:00:00 +0100 5142305 http://www.medworm.com/index.php?rid=5108102&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21811005%26dopt%3DAbstract Authors: Motokawa M, Sasamoto T, Kaku M, Kawata T, Matsuda Y, Terao A, Tanne K The purpose of this study was to clarify the prevalence and degree of root resorption induced by orthodontic treatment in association with treatment factors. The files of 243 patients (72 males and 171 females) aged 9-51 years were randomly selected from subjects treated with multi-bracket appliances. The severity of root resorption was classified into five categories on radiographs taken before and after treatment. The subjects were divided into extraction (n = 113 patients, 2805 teeth) and non-extraction (n = 130 patients, 3616 teeth) groups and surgical (n = 56 patients, 1503 teeth) and non-surgical treatment (n = 187 patients, 4918 teeth) groups. These subjects were also divided into two or three groups ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5108102 Mon, 01 Aug 2011 23:00:00 +0100 5108102 http://www.medworm.com/index.php?rid=5108101&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21811006%26dopt%3DAbstract Authors: Pinho T, Lemos C The aim of this study was to assess the influence of maxillary lateral incisor agenesis (MLIA) on the position of other teeth in the dental arch. The sample consisted of 147 individuals (66 males and 81 females) divided into two age groups: a growth phase group (A) comprising 43 individuals (18 males and 25 females, ages ranging from 9 to 16 years) and an adult group (B) (with females older than 14 and males older than 18 years) comprising 104 individuals (48 males and 56 females, ages ranging from 15 to 45 years). Within these groups, the individuals were then divided into three subsets: group 1 with MLIA, group 2 relatives of group 1 but without MLIA, and group 3 individuals from the general population (without agenesis and unrelated). Clinical evaluation of... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5108101 Mon, 01 Aug 2011 23:00:00 +0100 5108101 http://www.medworm.com/index.php?rid=5108105&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21808073%26dopt%3DAbstract Authors: Singh V, Hamdan A, Rock P The aim of the study was to assess the perception of dental aesthetics and treatment need in 10- to 11-year-old children using the Aesthetic Component (AC) of the Index of Orthodontic Treatment Need. Subjects were asked to rank the 10 AC photographs in order from the one which looked the best set of teeth to the worst. They were also asked to say whether or not the teeth in each picture required orthodontic treatment. Three hundred and seventy-nine children completed the first task but only 369 were able to decide on treatment need for every picture. Girls ranked the pictures in the order 1, 3, 2, 4, 5, 6, 7, 9, 8, and 10; the boys' sequence was 1, 2, 3, 4, 5, 6, 9, 7, 8, and 10. Significant differences were found between girls and boys for the median... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5108105 Sun, 31 Jul 2011 23:00:00 +0100 5108105 http://www.medworm.com/index.php?rid=5108104&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21808074%26dopt%3DAbstract Authors: Izquierdo AD, Mishima FD, Carrard VC, Farina M, Gonçalves Nojima MD This investigation examined the effects of pharmacologically induced precocious puberty on cranial growth in Wistar rats. Forty-eight female newborn Wistar rats were divided into two groups: a control group (C) and an experimental group (E), with four subgroups of six animals each. The time interval from birth until sacrifice differed between the subgroups, and was set at 30, 60, 90, and 120 days. An intramuscular single dose (300 μg) of steroid hormone danazol was administered on day 5 after birth, as a means of inducing precocious puberty. Alizarin (2 mg/100 g) was administered to three animals in each subgroup three days prior to sacrifice. Body mass and dates corresponding to the beginning of the oestrou... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5108104 Sun, 31 Jul 2011 23:00:00 +0100 5108104 http://www.medworm.com/index.php?rid=5108103&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21808075%26dopt%3DAbstract Authors: Soldanova M, Leseticky O, Komarkova L, Dostalova T, Smutny V, Spidlen M The aim of this prospective study was to compare the outcome of orthodontic therapy using two different therapeutic strategies: the labial straightwire (SW) technique and the lingual two-dimensional (2D) technique on the lower dental arch. The sample included 50 subjects (39 females and 11 males) with a complete dentition and an Angle Class I malocclusion with crowding who were treated non-extraction. The subjects were divided into two groups: group A, consisted of 25 patients (19 females and 6 males), who were treated with the lingual 2D technique, and group B, 25 patients (20 females and 5 males) treated using the labial SW appliance (Roth system). Changes in the position of the lower incisors to the A-P... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5108103 Sun, 31 Jul 2011 23:00:00 +0100 5108103 http://www.medworm.com/index.php?rid=5108107&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21795753%26dopt%3DAbstract Authors: Djordjevic J, Toma AM, Zhurov AI, Richmond S Laser scanning is a non-invasive method for three-dimensional assessment of facial morphology and symmetry. The aim of this study was to quantify facial symmetry in healthy adolescents and explore if there is any gender difference. Facial scans of 270 subjects, 123 males and 147 females (aged 15.3 ± 0.1 years, range 14.6-15.6), were randomly selected from the Avon Longitudinal Study of Parents and Children. Facial scans were processed and analysed using in-house developed subroutines for commercial software. The surface matching between the original face and its mirror image was measured for the whole face, upper, middle, and lower facial thirds. In addition, 3 angular and 14 linear parameters were measured. The percentage of symme... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5108107 Tue, 26 Jul 2011 23:00:00 +0100 5108107 http://www.medworm.com/index.php?rid=5108106&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21795754%26dopt%3DAbstract In conclusion, patients with severe malocclusion who also have TMD and facial pain more often have impaired oral health-related quality of life. The associations of the occlusal characteristics with oral health-related quality of life differ between genders. Therefore, these associations should be studied separately among genders. PMID: 21795754 [PubMed - as supplied by publisher] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5108106 Tue, 26 Jul 2011 23:00:00 +0100 5108106 http://www.medworm.com/index.php?rid=5108109&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21791711%26dopt%3DAbstract Authors: Abdul Kaphoor A, Sundareswaran S The purpose of this study was to evaluate and compare the force levels of aesthetic Ni-Ti wires to regular Ni-Ti wires of the same dimension and evaluate their mechanical properties. Aesthetic and regular maxillary superelastic Ni-Ti wires (0.016 × 0.022) from four different manufacturers (G&H Wire Company, TP Orthodontics, GAC International, and Ortho Organizers) were selected and grouped I-IV. The loading and unloading values were compared using a three-point bending test. The unloading end values were also recorded to evaluate the recovery of archwires after each deflection. The unloading values were recorded at 0.5, 1.5, and 2.5 mm after loading deflections of 1, 2, and 3 mm, respectively. Cross-sectional scanning electron microscopy w... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5108109 Mon, 25 Jul 2011 23:00:00 +0100 5108109 http://www.medworm.com/index.php?rid=5108108&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21791712%26dopt%3DAbstract The objective of this study was to determine if increased overjet (greater than 6 mm) influences the magnitude and reproducibility of natural smile and maximal smile in Caucasian adult females. Twenty adult females with an increased overjet (6-10 mm) and 20 control adult females (overjet 2-4 mm) with no history of orthodontic treatment volunteered to participate. The mean age in the control group was 30.1 ± 6.4 years and the mean age in the test group was 31.9 ± 10.8 years. Three-dimensional stereophotogrammetric images were captured of each subject for three expressions: at rest, natural smile, and maximal smile. The images were recorded twice on two separate occasions, 6 weeks apart. Images were landmarked and a partial ordinary Procrustes superimposition was used to adjust for the dif... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5108108 Mon, 25 Jul 2011 23:00:00 +0100 5108108 http://www.medworm.com/index.php?rid=5062993&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21785003%26dopt%3DAbstract Authors: Bock NC, Ruf S The aim of this study was to assess dentoskeletal changes following Herbst-Multibracket treatment in adult Class II division 1 patients. The subject material comprised 15 adult Class II division 1 subjects exhibiting a Class II molar relationship more than or equal to 0.5 cusps bilaterally or more than or equal to 1.0 cusps unilaterally and an overjet more than or equal to 6.0 mm. The average treatment time was 9 months (Herbst phase) plus 13.9 months (Multibracket phase). Lateral headfilms from before treatment (T1), after Herbst-Multibracket treatment (T2), and after at least 24 months of retention (T3) were analysed using the 'sagittal-occlusal analysis' (Pancherz, 1982) as well as standard cephalometric variables. During the treatment period (T2-T1), molar r... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5062993 Thu, 21 Jul 2011 23:00:00 +0100 5062993 http://www.medworm.com/index.php?rid=5062994&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21778520%26dopt%3DAbstract Authors: Ferreira MA, Assumpção A, Luersen MA, Borges PC The purpose of this study was to examine the mechanical behaviour of orthodontic delta retraction springs. Twelve titanium-molybdenum (0.016 × 0.022 inch) delta loops were studied. The springs were analysed by means of the finite element (FE) method and experimental tests using a platform transducer. Each spring was activated from 0 to 6 mm. Statistical analysis of the data was carried out by one-way analysis of variance and Games-Howell parametric multiple comparison test for heterogeneous variances. FE analysis revealed that the stress level varied from 277 to 1273 MPa. At 6.1 mm (773 MPa), the springs were still in the elastic range. Force levels varied from 0.1 N (10 g) to 2.2 N (224 g) at 1.4-8.1 mm of activation for the ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5062994 Wed, 20 Jul 2011 23:00:00 +0100 5062994 http://www.medworm.com/index.php?rid=5062998&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21771802%26dopt%3DAbstract Authors: Papamanou DA, Gkantidis N, Topouzelis N, Christou P The aim of the study was to analyse the aesthetic evaluation of head photographs of treated individuals with clefts by laypeople and professionals and to investigate how certain cephalometric variables could be related to their rating. A set of five standardized head photos (frontal, both laterals, three-quater right and left) of 12 Caucasian patients with treated unilateral cleft lip and palate were presented to 12 adult laypeople, 12 orthodontists, and 12 maxillofacial surgeons. For each set of photos the judges had to answer four questions on a visual analogue scale (VAS). The answers were analysed for intra- and inter-panel level of agreement and correlations of assessments with certain cephalometric parameters were deter... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5062998 Mon, 18 Jul 2011 23:00:00 +0100 5062998 http://www.medworm.com/index.php?rid=5062997&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21771803%26dopt%3DAbstract Authors: Edwards IR, Spary DJ, Rock WP Orthodontic elastomeric modules are susceptible to degradation and deformation after time in the mouth. The aims of this study were to determine whether degradation of elastomeric modules significantly affects friction during sliding mechanics and to investigate whether there is a difference in the behaviour of elastomeric modules after storage in both in vivo and in vitro environments. An Instron testing machine was used to determine the friction generated by elastomeric modules on 0.019 × 0.025 inch stainless steel archwires at 4 degrees of bracket tip. Four brands of modules were tested straight from the packet (n = 15), after storage in artificial saliva (n = 15), and after being in patients' mouths (n = 32). Modules were tested after 24 hour... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5062997 Mon, 18 Jul 2011 23:00:00 +0100 5062997 http://www.medworm.com/index.php?rid=5062996&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21771804%26dopt%3DAbstract Authors: Pakshir M, Bagheri T, Kazemi MR The aim of this study was to compare the electrochemical corrosion behaviour of stainless steel (SS) and nickel-titanium (Ni-Ti) orthodontic archwires in Ringer's solution at temperatures ranging from 15 to 55°C by using linear sweep voltametry and electrochemical impedance spectroscopy. Polarization curves show that the corrosion current density of SS is greater than that of Ni-Ti alloy. Since the corrosion current density is directly proportional to the corrosion rate, a great corrosion current density shows a lower resistance against corrosion. Therefore, in comparison with SS, Ni-Ti alloys have a lower corrosion rate. Results show that the temperature of the solution affects the corrosion rates of the alloys. As the temperature increases, t... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5062996 Mon, 18 Jul 2011 23:00:00 +0100 5062996 http://www.medworm.com/index.php?rid=5062995&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21771805%26dopt%3DAbstract Authors: Janson G, Branco NC, Morais JF, Freitas MR The aim of this study was to compare smile attractiveness between one, three, and four premolar extraction protocols in patients with Class II division 1 subdivision malocclusions and to analyse the aesthetic influence of buccal and posterior corridor widths on smile attractiveness. The sample consisted of posed smile photographs obtained from 66 subjects, divided into three groups according to the treatment-extraction protocol. Group 1 was treated with one maxillary premolar extraction included 23 subjects, group 2 was treated with four premolar extractions included 23 subjects, and 20 patients in group 3 were treated with three premolar extractions. Buccal and posterior corridor widths of each photograph were measured in proportion ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5062995 Mon, 18 Jul 2011 23:00:00 +0100 5062995 http://www.medworm.com/index.php?rid=5062999&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21765175%26dopt%3DAbstract This study shows that passive SLBs are associated with lower static or kinetic friction forces than those of active SLBs or conventional brackets. Wear on the bracket slots was not observed in the present study. PMID: 21765175 [PubMed - as supplied by publisher] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5062999 Fri, 15 Jul 2011 23:00:00 +0100 5062999 http://www.medworm.com/index.php?rid=5063009&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21750237%26dopt%3DAbstract Authors: Uribe F, Chau V, Padala S, Neace WP, Cutrera A, Nanda R The purpose of this study was to evaluate the dimensional changes of the alveolar ridge in patients with congenitally missing maxillary lateral incisors. The width and height of the alveolar ridge were compared before and after opening space for an endosseous dental implant between the central incisor and canine. Pre- and post-treatment dental stone models of 31 patients (8 males, 23 females; mean age 15.1 ± 7.9 years pre-treatment, 17.6 ± 8 years post-treatment) with unilaterally or bilaterally, congenitally missing maxillary lateral incisors were used in this study. Pre- and post-treatment measurements included: the space between the maxillary central incisor and canine, the depth of the labial concavity, and the widt... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063009 Mon, 11 Jul 2011 23:00:00 +0100 5063009 http://www.medworm.com/index.php?rid=5063008&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21750238%26dopt%3DAbstract Authors: Ali O, Makou M, Papadopoulos T, Eliades G The aim of the study was to evaluate some properties of modern orthodontic plastic brackets. Seven bracket brands [Aesthetik-Line (AL), Avalon (AV), Brillant (BR), Elegance (EL), OrthoFlex (OF), Silkon Plus (SL), and Spirit MB (SP)] were included in the study. The properties tested were chemical composition, base morphology, slot roughness, Vickers hardness (VH), and shear bond strength (SBS) with enamel.According to the results, the brackets were composed of polyurethane (AV and OF), polyoxymethylene (BR), and Ca-Al-silicate fibre glass-reinforced polycarbonate (AL, EL, SL, and SP). Metallic slots were composed of austenitic stainless steel (EL and SP) and Ag-Cu alloy (AV). The base morphology exhibited distinct designs, employing par... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063008 Mon, 11 Jul 2011 23:00:00 +0100 5063008 http://www.medworm.com/index.php?rid=5063007&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21750239%26dopt%3DAbstract Authors: Silvola AS, Rusanen J, Tolvanen M, Pirttiniemi P, Lahti S The aim of this study was to evaluate the relationship between occlusal characteristics and oral health-related quality of life in adults who underwent orthodontic or orthodontic-surgical treatment. The study group consisted of 51 adult patients (35 women, 16 men) with severe malocclusion and considerable functional disorders. Thirty-six of the patients underwent combined orthodontic-surgical treatment, while 15 underwent orthodontic treatment. Data were collected before and after treatment. Mean follow-up period was 5.0 years (range 2.2-6.7 years). Occlusal characteristics were measured from dental casts by using Peer Assessment Rating (PAR) index. A self-completed Oral Health Impact Profile (OHIP-14) was used to measu... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063007 Mon, 11 Jul 2011 23:00:00 +0100 5063007 http://www.medworm.com/index.php?rid=5063006&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21750240%26dopt%3DAbstract Authors: Major TW, Carey JP, Nobes DS, Heo G, Melenka GW, Major PW Edgewise orthodontic treatment utilizes a force couple in order to achieve labial-lingual tooth angulation. Two self-ligating brackets (Damon Q and Speed) were examined across a range of clinically relevant torques in order to assess the loading and unloading curves and bracket deformation. A previously developed torquing and load measurement system was utilized to rotate a 0.199 × 0.25 in stainless steel wire in a fixed bracket slot to the following angles: 16, 20, 24, 28, 32, and 40 degrees. The torque on the bracket was measured during both wire loading and unloading cycles. The torque play for the Damon brackets was determined to increase by less than 0.4 degrees when torqued to 70 Nmm, whereas the increase for the... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063006 Mon, 11 Jul 2011 23:00:00 +0100 5063006 http://www.medworm.com/index.php?rid=5063005&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21750241%26dopt%3DAbstract Authors: Silvestrini-Biavati A, Angiero F, Gibelli F, Signore A, Benedicenti S The aim of this study was to analyse, in vitro, the chemical and mechanical properties of a new fibre retainer, Everstick, comparing its characteristics with the requirements for an orthodontic retainer. Chemical analysis was used to examine seven fibre bundles exposed to a photocuring lamp and then to different acids and resistance to corrosion by artificial saliva fortified with plaque acids. The mechanical properties examined were tensile strength and resistance to flexural force. Ten fibre samples were tested for each mechanical analysis and the mean value and standard deviation were calculated. Wilcoxon signed rank test was used to evaluate change in weight after treatment in each group. To determine ch... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063005 Mon, 11 Jul 2011 23:00:00 +0100 5063005 http://www.medworm.com/index.php?rid=5063004&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21750242%26dopt%3DAbstract Authors: Shalish M, Cooper-Kazaz R, Ivgi I, Canetti L, Tsur B, Bachar E, Chaushu S This prospective study examined the adult patient's perception of recovery after insertion of three types of orthodontic appliances: Buccal, Lingual and Invisalign. The sample consisted of sixty-eight adult patients (45 females and 23 males) who comprised three groups: 28 Buccal, 19 Lingual, and 21 Invisalign patients. After appliance insertion, patients completed a Health-Related Quality of Life questionnaire daily for the first week and again on day 14, in order to assess patients' perception of pain and analgesic consumption. In addition, four areas of dysfunction were assessed: oral dysfunction, eating disturbances, general activity parameters, and oral symptoms. Lingual appliance was associated with... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063004 Mon, 11 Jul 2011 23:00:00 +0100 5063004 http://www.medworm.com/index.php?rid=5063003&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21750243%26dopt%3DAbstract Authors: Pegelow M, Alqadi N, Linder-Aronson Karsten A This retrospective study was carried out on consecutively collected dental casts, x-rays, and photos of 129 Swedish children who had been born with non-syndromic unilateral (U) cleft lip (CL), cleft lip and alveolus (CLA), or cleft lip and palate (CLP). The following dental characteristics were investigated in the primary and permanent dentitions: 1. the presence, eruption, position, and shape of the lateral incisor; 2. the prevalence of rotation and enamel hypoplasia of the permanent central incisor; 3. the occurrence of hypodontia outside the cleft region; and 4. the transition from the primary to the succeeding permanent lateral incisor in the cleft region. Patients with clefts involving the palate (UCLP) exhibited a high freque... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063003 Mon, 11 Jul 2011 23:00:00 +0100 5063003 http://www.medworm.com/index.php?rid=5063002&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21750244%26dopt%3DAbstract Authors: De Baets E, Lambrechts H, Lemiere J, Diya L, Willems G The interest in the psychological aspects of orthodontic treatment increases, but a drawback of many studies is that the psychological characteristics of the children themselves are often ignored. One of these psychological attributes is self-esteem (SE), which is a relatively stable personal resource that might moderate the effects of conditions or events. The aim of this study was to investigate whether there is a relationship between orthodontic treatment need and oral health-related quality of life (OHRQoL) and whether this relationship is influenced by SE. This cross-sectional study comprised 223 children (113 boys and 110 girls) between 11 and 16 years of age (mean age 13.2 years), seeking orthodontic treatment. The ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063002 Mon, 11 Jul 2011 23:00:00 +0100 5063002 http://www.medworm.com/index.php?rid=5063001&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21750245%26dopt%3DAbstract This study showed that a possible relationship between compliance and WSL development existed. PMID: 21750245 [PubMed - as supplied by publisher] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063001 Mon, 11 Jul 2011 23:00:00 +0100 5063001 http://www.medworm.com/index.php?rid=5063000&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21750246%26dopt%3DAbstract Authors: Cernochova P, Izakovicova-Holla L The aim of this retrospective study was to analyse dentoskeletal characteristics in patients with eruption disturbances of the maxillary permanent canines. Pre-treatment panoramic radiographs and lateral cephalograms of 636 consecutive orthodontic patients were assessed. The control group included 456 patients with physiologically erupted maxillary permanent canines (261 females and 195 males, mean age 12.6 and 12.4 years, respectively). The other groups comprised 144 subjects with palatally displaced canines (PDCs) (92 females and 52 males, mean age 14.2 and 14.7 years, respectively) and 36 patients with buccally displaced canines (BDCs) (16 females and 20 males, mean age 12.4 and 12.8 years, respectively). The selected dentoskeletal paramete... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063000 Mon, 11 Jul 2011 23:00:00 +0100 5063000 http://www.medworm.com/index.php?rid=5063010&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21745828%26dopt%3DAbstract Authors: Cehreli S, Ozçirpici AA, Yilmaz A The aim of this study was to examine peri-implant stresses around orthodontic micro implants upon torque-tightening and static load application by quasi-three-dimensional photoelastic stress analysis. Self-tapping orthodontic micro implants were progressively inserted into photoelastic models at 30, 45, 70, and 90 degrees and insertion torques were measured. Stress patterns (isochromatic fringe orders) were recorded by the quasi-three-dimensional photoelastic method using a circular polariscope after insertion and 250 g static force application. Torque-tightening of implants generated peri-implant stresses. Upon insertion, 90 degree placed implants displayed the lowest and homogeneous stress distribution followed by 30, 70, and 45 degree tilt... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063010 Sun, 10 Jul 2011 23:00:00 +0100 5063010 http://www.medworm.com/index.php?rid=5063014&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21745824%26dopt%3DAbstract Authors: Ileri Z, Basciftci FA, Malkoc S, Ramoglu SI The aim of this retrospective study was to evaluate the treatment outcome of lower incisor extraction and to compare it with premolar extraction and non-extraction treatment. The sample consisted of 60 subjects with Class I malocclusion and moderate crowding. The sample was separated into three groups: extraction of a lower incisor group, extraction of a four first premolar group and a non-extraction group. All groups involved 13 girls and 7 boys with a total of 20 patients. The Peer assessment rating (PAR) index was applied to a patient's pre-treatment (T1) and post-treatment (T2) dental casts. T1 dental casts were also used for determining Bolton discrepancy. One-way analysis of variance and post hoc Tukey HSD tests were used for s... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063014 Sat, 09 Jul 2011 23:00:00 +0100 5063014 http://www.medworm.com/index.php?rid=5063013&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21745825%26dopt%3DAbstract Authors: Van Parys K, Aartman IH, Kuitert R, Zentner A The aim of this study was to examine the potential relationship between the occurrence of orthodontic root resorption and presence of dental anomalies such as tooth agenesis and pipette-shaped roots. Dental anomalies and root resorption were assessed on dental panoramic tomographs (DPT) of 88 subjects, 27 males and 61 females, mean age 28.4 (SD = 11.3 years), selected from orthodontic patients on the basis of the following exclusion criteria: previous fixed appliance treatment, bad quality of the DPTs and no visibility of the periodontal ligament of every tooth, and younger than 15 years of age at the onset of treatment with fixed edgewise appliance lasting at least 18 months. A pipette-shaped root was identified as defined by a dr... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063013 Sat, 09 Jul 2011 23:00:00 +0100 5063013 http://www.medworm.com/index.php?rid=5063012&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21745826%26dopt%3DAbstract The objectives of the study were to compare the costs and outcome of orthodontic treatment in eight municipal health centres in Finland. A random sample of the age groups of 16- and 18-year-olds (n = 1109) living in these municipalities was clinically examined by two calibrated orthodontists. The acceptability of the morphology and function of the occlusion were assessed with the Occlusal Morphology and Function Index (OMFI). The data concerning previous orthodontic treatment were collected from the patient records of all subjects (n = 608) who reported previous or ongoing orthodontic treatment or who could not recall if they had received orthodontic treatment. The health centres were grouped into an early and a late timing group according to the mean age of starting the treatment. The mea... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063012 Sat, 09 Jul 2011 23:00:00 +0100 5063012 http://www.medworm.com/index.php?rid=5063011&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21745827%26dopt%3DAbstract In this study, 30 female skeletal remains that still retained the upper and lower first molars and central incisors were selected [early-modern (Edo) Japanese group]. Forty contemporary female Japanese were selected as a control. Analyses by standard methods of geometric morphometrics revealed some morphological differences between the early-modern (Edo) Japanese group and the contemporary Japanese group. For example, the early-modern (Edo) Japanese group exhibited bimaxillary dentoalveolar protrusion, a flat occlusal plane, and a large S-N length. On the other hand, the contemporary Japanese group exhibited slight protrusion of the anterior nasal spine. These findings may be of interest to orthodontists who are studying age variation or temporal differences and could lead to a better unde... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063011 Sat, 09 Jul 2011 23:00:00 +0100 5063011 http://www.medworm.com/index.php?rid=5063015&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21742643%26dopt%3DAbstract Authors: Behbehani F, Roy R, Al-Jame B The purpose of this study was to investigate the prevalence and severity of occlusal asymmetries in the molar and canine regions in a large population-based sample of adolescent Kuwaitis. Using a stratified cluster sampling method, 1299 Kuwaiti adolescents (674 boys mean age 13.3 years and 625 girls mean age 13.2 years), representing approximately 6.7 per cent of that age stratum in the population, were examined clinically for sagittal molar and canine relationships, with a view to recording half and full-step asymmetries. In this sample, 1244 subjects were examined clinically, while for the remaining 55, pre-treatment study models were assessed. All subjects were in the early permanent dentition stage. Descriptive statistical analyses were used t... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5063015 Wed, 06 Jul 2011 23:00:00 +0100 5063015 http://www.medworm.com/index.php?rid=5011760&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21734254%26dopt%3DAbstract Authors: Aly M, Willems G, Van Den Noortgate W, Elen J The aim of this research was to compare the effectiveness of hierarchical sequencing (HS) versus elaboration sequencing (ES) models in improving educational outcome of clinical knowledge when using instructional multimedia programs in postgraduate orthodontic training. Twenty-four postgraduate and 24 undergraduate dental students participated in this study. The postgraduates were following an orthodontic speciality training programme. The undergraduates were fourth- and fifth-year dental students. Twelve instructional multimedia modules were developed, six logically sequenced (LS) discussing six different orthodontic topics. Another six modules on identical topics were sequenced according to one macro-sequencing (MS) model. The imp... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5011760 Tue, 05 Jul 2011 23:00:00 +0100 5011760 http://www.medworm.com/index.php?rid=5011759&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21734255%26dopt%3DAbstract Authors: Uysal T, Yagci A, Ucar FI, Veli I, Ozer T The aim of this study was to evaluate the relationship between the tongue volume and lower incisor irregularity, using cone-beam computed tomography (CBCT), and to identify the possible gender differences. CBCT images of 60 patients between 16 and 36 years of age were selected from 1400 sets of images in the database. Tomography was carried out using iCAT® (Imaging Sciences International, Hatfield, Pennsylvania, USA) and segmentation was carried out by using Mimics 10.1 software (Materialise NV, Leuven, Belgium). The tongue volume was calculated by using the volume of the voxels from the scan and the number of voxels selected for a given mask. Lower incisor crowding was measured with the Little's irregularity index and divided into th... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=5011759 Tue, 05 Jul 2011 23:00:00 +0100 5011759 http://www.medworm.com/index.php?rid=4967541&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21693681%26dopt%3DAbstract Authors: Meaney S, Anweigi L, Ziada H, Allen F Congenital absence of teeth affects 2-6 per cent of the population, but its impact on quality of life (QoL) is not fully understood. The symptoms of hypodontia can vary and therefore also the treatment and management of this condition. Determining and understanding the possible impact of hypodontia on patients could inform and improve the management of such patients. A purposive sample of 10 participants aged 16-25 years (five males and five females) with mild, moderate, or severe hypodontia at various stages of treatment was recruited. The participants had previously completed a 49-item Oral Health Impact Profile (OHIP) questionnaire with summary scores ranging from 24 to 143. All subjects participated in semi-structured interviews, and t... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4967541 Mon, 20 Jun 2011 23:00:00 +0100 4967541 http://www.medworm.com/index.php?rid=4922138&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21652538%26dopt%3DAbstract The objective of this study was to investigate the influence of different conditioning procedures on various ceramic microstructures and bracket adhesion. Ceramic specimens (feldspathic, leucite, leucite-free, and fluorapatite) were mechanically conditioned (n = 20 per ceramic type) with conventional hydrofluoric acid (5 per cent HF; 60/30 seconds), buffered hydrofluoric acid (9.6 per cent BHF; 60/30 seconds), or sandblasting (Al(2)O(3)/SiO(2) particles). Silane coupling agents were added for chemical conditioning before bracket bonding. Bracket adhesion was calculated with a shear test in a universal testing machine. The bracket-composite-ceramic interface was further evaluated using the adhesive remnant index (ARI). One specimen of each ceramic/conditioning combination was subjected to q... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4922138 Sun, 05 Jun 2011 23:00:00 +0100 4922138 http://www.medworm.com/index.php?rid=4922137&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21652539%26dopt%3DAbstract Authors: van Westing K, Algera TJ, Kleverlaan CJ There is no consensus in the literature concerning the rebonding procedure for orthodontic retainers. The aim of this in vitro study was to evaluate the bond and rebond strength of retainers bonded to enamel surfaces with and without composite remnants. The retainers were bonded with Excite and Tetric Flow on three different surfaces: clean enamel, enamel where the composite had been removed by a tungsten carbide bur, and with cured composite remnants roughened by a tungsten carbide bur. The bond strength was determined by means of a cantilever-tensile bond strength test using a repeated crossover design. Each tooth was rebonded twice and tested three times (N = 114). The surface was examined by scanning electron microscopy (SEM), electr... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4922137 Sun, 05 Jun 2011 23:00:00 +0100 4922137 http://www.medworm.com/index.php?rid=4922139&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21633091%26dopt%3DAbstract This study was performed on 106 untreated subjects (52 girls, 54 boys, aged 13-15 years). Data were obtained from dental cast measurements. A hybrid GA-ANN algorithm was developed to find the best reference teeth and the most accurate mapping function. Based on a regression analysis, the strongest correlation was observed between the sum of the mesiodistal widths of the mandibular canines and premolars and the mesiodistal widths of the mandibular first molars and incisors (r = 0.697). In the maxilla, the highest correlation was observed between the sum of the mesiodistal widths of the canines and premolars and the mesiodistal widths of the mandibular first molars and maxillary central incisors (0.742). The hybrid GA-ANN algorithm selected the mandibular first molars and incisors and the ma... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4922139 Tue, 31 May 2011 23:00:00 +0100 4922139 http://www.medworm.com/index.php?rid=4876005&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21616980%26dopt%3DAbstract Authors: Fudalej P PMID: 21616980 [PubMed - in process] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4876005 Sun, 29 May 2011 04:30:31 +0100 4876005 http://www.medworm.com/index.php?rid=4876004&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21616981%26dopt%3DAbstract Authors: Baccetti T, Franchi L PMID: 21616981 [PubMed - in process] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4876004 Sun, 29 May 2011 04:30:13 +0100 4876004 http://www.medworm.com/index.php?rid=4876007&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21571874%26dopt%3DAbstract Authors: Abed Al Jawad F, Cunningham SJ, Croft N, Johal A The aim of this research was to assess the effects of fixed orthodontic treatment on dietary intake and behaviour. The study adopted a qualitative approach by conducting semi-structured one-to-one interviews, with 10 adolescent patients (four males; six females) undergoing fixed orthodontic treatment with a mean age of 13.21 (SD 0.71) years. The interviews were transcribed and analysed, by two independent investigators, using framework principles in which emerging themes and ideas were identified. These emerging themes were characterized and compared between patients until no new themes or ideas were identified. Framework analysis identified the following two main themes arising in adolescent patients undergoing fixed orthodonti... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4876007 Thu, 12 May 2011 23:00:00 +0100 4876007 http://www.medworm.com/index.php?rid=4876006&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21571875%26dopt%3DAbstract Authors: Hirai M, Nakajima A, Kawai N, Tanaka E, Igarashi Y, Sakaguchi M, Sameshima GT, Shimizu N The torque moment generated by third-order bends is important for tooth movement. The purpose of this study was to measure the torque moment that can be delivered by various archwire and bracket combinations at the targeted tooth. Stainless steel (SS) upper brackets with 0.018 and 0.022 inch slots, two sizes of nickel-titanium (Ni-Ti) alloy wires, and three sizes of SS wires for each bracket were used. The wire was ligated with elastics or wire. The torque moment delivered by the various archwire-bracket-ligation combinations was measured using a torque gauge. Statistical analysis was undertaken using analysis of variance (multiple comparison tests and post hoc using Tukey's honestly signi... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4876006 Thu, 12 May 2011 23:00:00 +0100 4876006 http://www.medworm.com/index.php?rid=4821736&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21566086%26dopt%3DAbstract This study included systematic analysis of extreme values (outliers) in the assessment of the quality of measurements obtained. Descriptive statistics revealed qualitative differences in the depiction of different landmarks. The landmarks nasion and infradentale revealed a minor SD in all three spatial coordinates with the smallest SD for infradentale (SD = 0.18 mm) in the transverse plane. However, no systematic trend was identified with regard to the influence of the observer's level of experience affecting the repeatability of landmark positioning. Thus, the repeatability and reproducibility of placements of landmarks with 3D CT were found to be acceptable for a majority of anatomical positions. PMID: 21566086 [PubMed - as supplied by publisher] (Source: European Journal of Orthodon... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821736 Wed, 11 May 2011 23:00:00 +0100 4821736 http://www.medworm.com/index.php?rid=4821737&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21562071%26dopt%3DAbstract Authors: Romero-Maroto M, Nieto-Sánchez I, Míguez-Contreras M, López-de-Andrés A The aim of this study was to determine and compare the visual accuracy of students and experienced orthodontists in distinguishing the different skeletal classes and facial biotypes using only lateral photographs. A group of 19 orthodontic students (4 males and 15 females, aged between 23 and 30 years) and 9 experienced orthodontists (three males and six females, aged between 30 and 56 years) were shown a slide presentation of 100 (50 males and 50 females) patients aged between 8 and 42 years and were asked to indicate the skeletal class and the facial biotype of each subject. Data were analysed using a one-way repeated measures analysis of variance, with Bonferroni post hoc adjustment for multiple tes... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821737 Tue, 10 May 2011 23:00:00 +0100 4821737 http://www.medworm.com/index.php?rid=4821762&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21459834%26dopt%3DAbstract Authors: Aldairy T, Laverick S, McIntyre GT The aims of this study were to evaluate the quality and reliability of UK websites providing information on orthognathic and jaw surgery to patients. An Internet search engine (www.google.com) was used to identify websites containing medical information on 'orthognathic surgery' and 'jaw surgery'. Of over 144 000 links for orthognathic surgery and 700 000 for jaw surgery, the first 100 were examined in detail. After excluding discussion groups, news and video feeds, and removing duplicate sites, only 25 relevant websites remained which were then evaluated using the DISCERN instrument (www.discern.org.uk/discern_instrument.php). Through the 16 questions assessing the reliability and quality of the consumer information which are scored from... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821762 Sun, 08 May 2011 23:00:00 +0100 4821762 http://www.medworm.com/index.php?rid=4821738&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21558166%26dopt%3DAbstract Authors: Memon S, Fida M The aim of this study was to develop a prediction equation for estimating the total widths of the mandibular permanent canines and premolars (TCPW) using the total widths of the mandibular first permanent molars and incisors (TWFMI). The sample comprised 288 mandibular dental casts of orthodontic patients (106 males and 182 females, average age 13.8 and 14.4 years, respectively). A digital vernier calliper was used to measure the mesiodistal tooth widths from the mandibular right to the left first permanent molar. An independent t-test was used to determine any gender difference and a multiple linear regression equation to predict TCPW using TWFMI. A paired t-test was used to compare the actual and predicted values of the canines and premolars. The results show... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821738 Sun, 08 May 2011 23:00:00 +0100 4821738 http://www.medworm.com/index.php?rid=4821740&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21531785%26dopt%3DAbstract In this study we found that in the embryonic diastema, Wnt5a expression was observed in mesenchyme, whereas Wnt4 and Wnt10b were expressed in epithelium. The expression of Wnt6 and Wnt11 was found in both tissues. The Wnt co-receptor, Lrp6, was weakly expressed in the diastema overlapping with weak Lrp4 expression, a co-receptor that inhibits Wnt signaling. Secreted Wnt inihibitors Dkk1, Dkk2, and Dkk3 were also expressed in the diastema. Lrp4 mutant mice develop supernumerary teeth in the diastema that is accompanied by upregulation of Wnt signaling and Lrp6 expression. Wnt signaling is thus usually attenuated in the diastema by these secreted and membrane bound Wnt inhibitors. PMID: 21531785 [PubMed - as supplied by publisher] (Source: European Journal of Orthodontics) European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821740 Thu, 28 Apr 2011 23:00:00 +0100 4821740 http://www.medworm.com/index.php?rid=4821739&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21531786%26dopt%3DAbstract Authors: Bugaighis I, Mattick C, Tiddeman B, Hobson R The aim of the prospective cross-sectional morphometric study was to explore three dimensional (3D) facial shape and form (shape plus size) variation within and between 8- and 12-year-old Caucasian children; 39 males age-matched with 41 females. The 3D images were captured using a stereophotogrammeteric system, and facial form was recorded by digitizing 39 anthropometric landmarks for each scan. The x, y, z coordinates of each landmark were extracted and used to calculate linear and angular measurements. 3D landmark asymmetry was quantified using Generalized Procrustes Analysis (GPA) and an average face was constructed for each gender. The average faces were superimposed and differences were visualized and quantified. Shape variatio... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821739 Thu, 28 Apr 2011 23:00:00 +0100 4821739 http://www.medworm.com/index.php?rid=4821742&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21511819%26dopt%3DAbstract Authors: Altan M, Nebioglu Dalci O, Iseri H An important criterion of orthodontic diagnosis is the determination of the skeletal maturation stage. The cervical vertebral maturation (CVM) method is presented as an alternative to skeletal maturation determination. However, studies published to date concerning CVM have generally been cross-sectional. The aim of this investigation was to longitudinally evaluate growth and development with the CVM method. Lateral cephalometric radiographs of 41 girls, aged 9-16 years, collected between 1978 and 1984 were used to evaluate changes in C2, C3, and C4 dimensions. The mean values, standard deviations, maximum and minimum values of cervical vertebrae growth, and growth rate were calculated for every age and age interval. Cumulative growth incremen... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821742 Wed, 20 Apr 2011 23:00:00 +0100 4821742 http://www.medworm.com/index.php?rid=4821741&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21511820%26dopt%3DAbstract Authors: Granlund CM, Lith A, Molander B, Gröndahl K, Hansen K, Ekestubbe A The aims of this study were to evaluate the frequency of errors in panoramic radiographs in young orthodontic patients, to register pathologic and abnormal conditions, and to compare these findings with the patient's record. A total of 1287 panoramic radiographs of children and adolescents (530 boys and 757 girls; mean age 14.2 years) were analyzed. The radiographs were obtained of patients referred for orthodontic treatment during a 1 year period. Four observers evaluated the radiographs for 10 common errors, pathologies, and/or anomalies. Cohen's kappa was used for the calculations of inter- and intraobserver variability. Five of the errors were divided into clinically relevant or not clinically relevant err... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821741 Wed, 20 Apr 2011 23:00:00 +0100 4821741 http://www.medworm.com/index.php?rid=4821746&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21508264%26dopt%3DAbstract Authors: Taner T, Aksu M Bonded retainers are considered reliable, independent of patient co-operation, and highly efficient. However, most studies regarding the survival of retainers are retrospective. The aims of this investigation were to prospectively evaluate the failure rate of bonded lingual retainers, the influence of direct or indirect bonding procedures on survival, and to determine the distribution of failures over a 6 month period. Mandibular lingual retainers were bonded in 66 patients. Thirty-two retainers were bonded using a direct method and 34 by an indirect method. There were 23 females and 9 males (mean age 15.96 ± 3.21 years) in the direct group and 29 females and 5 males (mean age 19.44 ± 6.79 years) in the indirect group. A 0.016 × 0.022 inch Bond-a-Braid retai... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821746 Tue, 19 Apr 2011 23:00:00 +0100 4821746 http://www.medworm.com/index.php?rid=4821745&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21508265%26dopt%3DAbstract Authors: Jung K, Engelke W, Knösel M A thorough understanding of the intraoral pressure conditions of patients with different forms of malocclusion may help to characterize their aetiology in more detail and improve orthodontic treatment approaches by adding strategies to achieve a normalization of intraoral pressure levels. These pressure curve analyses should not only provide information on intraoral activity or during rest but also detail characterization of swallowing features and pressure plateau stages. For this purpose, algorithms for extracting swallowing peaks and plateau stages were developed and evaluated. Established curve characteristics such as the average or maximum pressure as well as the number of swallowing peaks or resting phases were compared between each other. Th... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821745 Tue, 19 Apr 2011 23:00:00 +0100 4821745 http://www.medworm.com/index.php?rid=4821744&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21508266%26dopt%3DAbstract This study was performed on 60 subjects (30 females and 30 males) aged from 7 to 30 years. Analysis of variance followed by a Tukey honestly significant difference test showed that the serum levels of the DHEAS were statistically significant at (P < 0.01) in all three groups. The serum levels were significant (P < 0.05) when each of the three groups were individually compared with the other two groups. The mean DHEAS levels were 0.43 ± 0.28, 2.17 ± 0.92, and 4.60 ± 1.34 μg/ml in the pre-pubertal, pubertal, and adult groups, respectively. There was a gradual increase in the hormonal level with progressing skeletal age. The adult group showed the highest DHEAS level and the pre-pubertal group the lowest. Serum levels of DHEAS showed a constant increase from pre-puberty to adulthood... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821744 Tue, 19 Apr 2011 23:00:00 +0100 4821744 http://www.medworm.com/index.php?rid=4821743&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21508267%26dopt%3DAbstract Authors: Jäderberg S, Feldmann I, Engström C The aim of this prospective study was to evaluate and compare stability after 6 months of Essix retainer use. Patients' perceptions of wearing the retainer were also evaluated. A total of 69 patients, 53 girls and 16 boys [mean age 15.7 years, standard deviation (SD) 1.96], were included in the study and randomized into two groups with different wear regimens; full-time wear for 3 months and thereafter at night (group A) compared to full-time wear for 1 week and thereafter at night only (group B). Sixty patients completed the study and thus, group A comprised 30 maxillary retainers and 18 mandibular retainers and group B 30 maxillary and 18 mandibular retainers. Little's irregularity index (LII), overjet, and overbite were measured at debo... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821743 Tue, 19 Apr 2011 23:00:00 +0100 4821743 http://www.medworm.com/index.php?rid=4821748&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21505046%26dopt%3DAbstract This study was undertaken to determine the normative and perceived orthodontic treatment need of patients in Trinidad, a Caribbean island. The study sample comprised 30 child dental health clinic patients, 30 of their accompanying parents, and 52 adult patients from other University of the West Indies clinics and the Dental Hospital in Mount Hope, Trinidad. Two clinicians used the Dental Health Component of the Index of Orthodontic Treatment Need (IOTN) to assess normative need, and the patient's perceived needs were assessed using the Aesthetic Component (AC) of the IOTN and the Oral Aesthetic Subjective Impact Scale (OASIS). Fisher's exact test was used to determine the differences between the subgroups of the sample for both normative and perceptive treatment need. Association between n... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821748 Mon, 18 Apr 2011 23:00:00 +0100 4821748 http://www.medworm.com/index.php?rid=4821747&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21505047%26dopt%3DAbstract Authors: Yoshida S, Namura Y, Matsuda M, Saito A, Shimizu N Although the polymerization reaction in light-cured orthodontic adhesive continues for some time after light irradiation, it is unclear whether insufficiently irradiated adhesive develops sufficient bond strength. This in vitro study examined the maturation of bond strength after exposure of a variety of light doses. Large metal brackets were bonded to the enamel of 288 bovine mandibular incisors by irradiation at two light intensities (200 and 400 mW/cm(2)) and for three exposure times (3, 5, and 10 seconds) using three orthodontic adhesives (TB, OP, and BOB). Shear bond strengths and adhesive remnant indices (ARIs) were determined immediately (T1) and 24 hours after bonding (T2; n = 8 in each group). Comparisons were made us... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821747 Mon, 18 Apr 2011 23:00:00 +0100 4821747 http://www.medworm.com/index.php?rid=4821750&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21502379%26dopt%3DAbstract Authors: Faltermeier J, Simon P, Reicheneder C, Proff P, Faltermeier A Electron beam irradiation can be used to improve the mechanical properties of polymers. The aim of this study was to investigate the influence of electron beam irradiation with an energy dose of 100 kGy on the mechanical properties and colour stability of conventional polymer brackets and experimental filled composite brackets. The conventional brackets tested were Aesthetik-Line, Brillant, and Envision. The experimental brackets contained urethane dimethacrylate, as a monomer matrix and functional silane-treated SiO(2) fillers with a filler content of either 10 (Exper 1) or 40 (Exper 2) vol per cent. The influence of electron beam post-curing on Vickers hardness (VH) of the polymer brackets was investigated. Additi... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821750 Sun, 17 Apr 2011 23:00:00 +0100 4821750 http://www.medworm.com/index.php?rid=4821749&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21502380%26dopt%3DAbstract Authors: Erkan M, Gurel HG, Nur M, Demirel B The aim of this investigation was to compare the traditional method of manual cephalometric tracing with four different computerized tracing programs, where the lateral cephalograms were scanned at 300 dpi and digitized onscreen. Thirty randomly selected cephalometric radiographs were used in this study. Four programs Dolphin Imaging, Vistadent, Nemoceph, and Quick Ceph were evaluated. Three dental, 11 skeletal, and 1 soft tissue parameters were measured that consisted of 5 linear and 10 angular measurements. Statistical analysis was carried out using multivariate analysis of variance and Box's and Levene's tests. No statistically significant difference was found between manual tracing and the computerized tracing programs. The measurements ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821749 Sun, 17 Apr 2011 23:00:00 +0100 4821749 http://www.medworm.com/index.php?rid=4821751&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21486872%26dopt%3DAbstract Authors: Krey KF, Hirsch C Orthodontic treatment is a common dental procedure in developed countries. However, the frequency and factors associated with treatment demand are different between countries. The aim of this study was to examine the frequency of orthodontic treatment in German children and adolescents and to analyse the influence of age, gender, and socio-economic status (SES; education and region) on the frequency of treatment. Subjects in a random population sample of 1538 German children and adolescents, aged 11-14 years, were interviewed at home in the autumn of 2008 regarding current orthodontic treatment and associated factors. Approximately one-third (33.5 per cent) of the subjects interviewed were undergoing orthodontic treatment at that time. In a multivariable logi... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821751 Mon, 11 Apr 2011 23:00:00 +0100 4821751 http://www.medworm.com/index.php?rid=4821756&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21478298%26dopt%3DAbstract Authors: Megat Abdul Wahab R, Idris H, Yacob H, Zainal Ariffin SH This prospective study investigated the difference in clinical efficiency between Damon™ 3 self-ligating brackets (SLB) compared with Mini Diamond conventional ligating brackets (CLBs) during tooth alignment in straightwire fixed appliance therapy. Twenty-nine patients (10 males and 19 females), aged between 14 and 30 years, were randomly divided into two groups: 14 patients received the SLB and 15 received the CLB. Upper arch impressions were taken for pre-treatment records (T(0)). A transpalatal arch was soldered to both maxillary first molar bands prior to extraction of the maxillary first premolars, followed by straightwire fixed appliances (0.022 × 0.028 inch). A 0.014 inch nickel titanium (NiTi) wire was used as... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821756 Thu, 07 Apr 2011 23:00:00 +0100 4821756 http://www.medworm.com/index.php?rid=4821755&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21478299%26dopt%3DAbstract Authors: Jónsdóttir SH, Giesen EB, Maltha JC During orthodontic tooth movement, the mechanical behaviour of the extracellular matrix of the periodontal ligament (PDL) determines the cellular processes involved in turnover of the PDL and alveolar bone. This mechanical behaviour is the basis for finite element (FE) models and FE analyses. Five young adult male beagle dogs were used to test the null hypothesis that the mechanical behaviour of the PDL is identical in normal and hyalinized PDL. Therefore, tooth transposition was measured after standardized force application by super-elastic nickel titanium (NiTi) coil springs, exerting a constant force of 100 cN for 5 hours in both conditions. A rapid transposition during the first few seconds was found. However, it was significantly less... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821755 Thu, 07 Apr 2011 23:00:00 +0100 4821755 http://www.medworm.com/index.php?rid=4821754&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21478300%26dopt%3DAbstract The objective of the present study was to evaluate the cytotoxicity and degree of monomer conversion of resin-reinforced glass ionomer cements (RGIC) over different time periods. Four RGICs: Fuji Ortho LC (FOLC), Fuji Ortho Band (FOB), Orthoglass (OGL), and Multicure Glass Ionomer (MCI) were evaluated for cytotoxicity in fibroblastic L929 cells and for their degree of monomer conversion over different time periods. Three control groups were also analysed: positive control (C+), consisting of Tween 80 cell detergent; negative control (C-), consisting of phosphate-buffered saline; and cell control (CC), consisting of cells exposed to any material. To evaluate the cytotoxicity, the dye-uptake technique was used and the degree of conversion was evaluated using infrared spectroscopy. The data o... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821754 Thu, 07 Apr 2011 23:00:00 +0100 4821754 http://www.medworm.com/index.php?rid=4821753&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21478301%26dopt%3DAbstract Authors: Farronato G, Maijer R, Carìa MP, Esposito L, Alberzoni D, Cacciatore G Teflon is an anti-adherent and aesthetic material. The aim of this study was to evaluate, in vitro, the influence of Teflon coating on the resistance to sliding (RS) of orthodontic archwires. For this purpose, Teflon-coated archwires were examined using frictional resistance tests by means of a universal testing machine and compared with conventional uncoated wires. Twelve types of archwires with round and rectangular sections (0.014, 0.018, and 0.018 × 0.025 inches) and of different materials (stainless steel and nickel-titanium) were tested with two passive self-ligating brackets (SmartClip™ and Opal(®)) and one active self-ligating bracket (Quick(®)). Each archwire-bracket combination was tested 10... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821753 Thu, 07 Apr 2011 23:00:00 +0100 4821753 http://www.medworm.com/index.php?rid=4821752&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21478302%26dopt%3DAbstract This study used an experimental dental arch model to examine the orthodontic forces generated by a quadhelix appliance in terms of parallel expansion, fan expansion, or a combination of the two. Strain gauges were attached to experimental brass rods that represented the teeth arranged in the shape of an average dental arch to detect forces in the buccal, lingual, mesial, and distal directions. Orthodontic forces generated by different types of activation were compared by Scheffe's multiple test. The largest orthodontic force generated during parallel expansion was observed at the first molar in the buccal direction. When fan expansion was applied, significant orthodontic force was observed at the canine in the mesial and labial directions, whereas force in the mesial and lingual directions... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821752 Thu, 07 Apr 2011 23:00:00 +0100 4821752 http://www.medworm.com/index.php?rid=4821757&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21474566%26dopt%3DAbstract Authors: Hamamci N, Acun Kaya F, Uysal E, Yokus B The aim of this study was to identify the levels of interleukin (IL)-2, IL-6, and IL-8 around miniscrews used for anchorage during canine distalization. Sixteen patients (eight males and eight females; mean age, 16.6 ± 2.4 years) who were treated with bilateral upper first premolar extractions were included in the study. Thirty-two maxillary miniscrew implants were placed bilaterally in the alveolar bone between the maxillary second premolars and first molars as anchorage units for maxillary canine distalization. Three groups were constructed. The treatment, miniscrew, and control groups consisted of upper canines, miniscrew implants, and upper second premolars, respectively. Peri-miniscrew implant crevicular fluid and gingival crevicu... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821757 Wed, 06 Apr 2011 23:00:00 +0100 4821757 http://www.medworm.com/index.php?rid=4821759&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21467122%26dopt%3DAbstract Authors: Sadat-Khonsari R, Fenske C, Behfar L, Bauss O The aim of this study was to assess whether it is possible to derive accurate vertical measurements of the mandibular ramus and condyle from panoramic radiographs. A human dry skull was positioned in a panoramic machine. The skull was displaced along the sagittal and transverse plane and rotated around the vertical and transverse axes. A set of 252 digital radiographs with defined positioning errors was compared with a set of 42 radiographs in the 'ideal' position. The distances between the metal markers that had been attached at the angle of the mandible at a distance of 60 mm in the condyle region to produce fixed reference points on the radiographs were measured. Statistical differences were investigated using Friedman repeated ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821759 Mon, 04 Apr 2011 23:00:00 +0100 4821759 http://www.medworm.com/index.php?rid=4821758&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21467123%26dopt%3DAbstract Authors: Kalwitzki M, Godt A, Göz G This retrospective investigation was designed to assess the effects of extraction treatment on the sagittal dimensions of the maxillary and mandibular skeletal structures of growing patients. The records of 40 patients (17 girls, 23 boys; median age 10 years 11 months) whose orthodontic treatment involved extraction of four premolars were evaluated and compared with a control group of 100 patients (54 girls, 46 boys; median age 10 years 7 months) treated non-extraction. Two lateral cephalograms were obtained of each patient, the first before the extractions, T1, and the second at a later point, T2 (mean difference 59 months). Linear parameters, including S-N, the maxillary/mandibular alveolar process, and maxillary/mandibular base, were measured. Th... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821758 Mon, 04 Apr 2011 23:00:00 +0100 4821758 http://www.medworm.com/index.php?rid=4821761&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21464152%26dopt%3DAbstract Authors: Cakirer B, Kucukkeles N, Nevzatoglu S, Koldas T The purpose of the present study was to evaluate upper airway changes related to craniofacial changes induced by a facemask (FM) combined with Le Fort I osteotomy without down-fracture in Class III maxillary retrusion subjects (group 1) when compared with a similar group of subjects treated with traditional rapid palatal expansion and FM therapy. Pre- (T1) and post- (T2) protraction cephalometric radiographs of group 1 (10 females and 6 males; mean age 12.75 ± 1.91 years) and group 2 (7 females and 9 males; mean age 12 ± 1.7 years) were traced. The treatment duration was 149 ± 14 days (approximately 5 months) and 270 ± 46 days (approximately 9 months) for groups 1 and 2, respectively. A paired t-test for intergroup comparison... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821761 Sun, 03 Apr 2011 23:00:00 +0100 4821761 http://www.medworm.com/index.php?rid=4821760&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21464153%26dopt%3DAbstract Authors: Sifakakis I, Pandis N, Makou M, Katsaros C, Eliades T, Bourauel C The aim of this study was to assess the effect of bracket type on the labiopalatal forces and moments generated in the sagittal plane. Incognito™ lingual brackets (3M Unitek), STb™ lingual brackets (Light Lingual System; ORMCO), and conventional 0.018 inch slot brackets (Gemini; 3M Unitek) were bonded on three identical maxillary acrylic resin models, with a palatally displaced right lateral incisor. The transfer trays for the indirect bonding of the lingual brackets were constructed in certified laboratories. Each model was mounted on the orthodontic measurement and simulation system and ten 0.013 inch CuNiTi wires were used for each bracket type. The wire was ligated with elastomerics and each measurement ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4821760 Sun, 03 Apr 2011 23:00:00 +0100 4821760 http://www.medworm.com/index.php?rid=4660870&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21430015%26dopt%3DAbstract Authors: Johal A, Sheriteh Z, Battagel J, Marshall C This prospective cohort study evaluated the use of videofluoroscopy in assessing changes in both antero-posterior (A-P) and transverse pharyngeal airway dimensions in patients with obstructive sleep apnoea (OSA). Forty patients [32 males and 8 females; mean age of 49.3 (SD = 10.79) years] with confirmed OSA, referred for mandibular advancement appliance (MAA) therapy were recruited. Patients received a customized Herbst MAA, adjusted for maximum comfortable protrusion. A standard lateral cephalogram, supine A-P, and transverse videofluoroscopic investigations were performed. Repeat supine videofluoroscopic investigations were undertaken with the MAA in situ. Parametric tests were used to evaluate the study hypotheses as the data were... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4660870 Thu, 31 Mar 2011 23:00:00 +0100 4660870 http://www.medworm.com/index.php?rid=4660867&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21447779%26dopt%3DAbstract Authors: Eslamian L, Borzabadi-Farahani A, Mosavian N, Ghasemi A This in vitro study evaluated the shear bond strength (SBS) between ceramic brackets (CBs) and resin composite restorations (RCRs) prepared using different surface treatments. The findings were also compared with a similar study that used stainless steel brackets (SSBs). Forty-five premolars were restored with a nano-hybrid composite resin (Tetric EvoCeram) and randomly assigned to three surface treatment groups: group 1, 5 per cent hydrofluoric acid (HF); group 2, air abrasion (50 μm alumina particles); and group 3, diamond bur. Specimens were bonded with CBs (Fascination) and exposed to thermo-cycling (500 cycles). The shear force at a crosshead speed of 1 mm/minute was transmitted to brackets. The adhesive remnant ind... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4660867 Mon, 28 Mar 2011 23:00:00 +0100 4660867 http://www.medworm.com/index.php?rid=4660866&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21447780%26dopt%3DAbstract Authors: Al-Hity R, Gustin MP, Bridel N, Morgon L, Grosgogeat B This in vitro study investigated the influence of using different combinations of bracket, adhesive, and light-curing source on the tensile bond strength to porcelain and on failure patterns at debonding. Tensile tests were performed using: one ceramic bracket versus one metal bracket, two orthodontic composites; type bisphenol A-glycidyldimethacrylate and urethane dimethacrylate (UDMA), and four light-curing units with the same range of emission spectrum but various light intensities: three light-emitting diode (LED) units and one halogen-based unit. One hundred and sixty porcelain samples were randomly divided into 16 equal groups. The porcelain surface was conditioned with 9 per cent hydrofluoric acid before silane appl... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4660866 Mon, 28 Mar 2011 23:00:00 +0100 4660866 http://www.medworm.com/index.php?rid=4660865&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21447781%26dopt%3DAbstract Authors: Hassan B, Nijkamp P, Verheij H, Tairie J, Vink C, Stelt PV, Beek HV The study aims were to assess the precision and time required to conduct cephalometric analysis with cone-beam computed tomography (CBCT) in vivo on both three-dimensional (3D) surface models and multi-planar reformations (MPR) images. Datasets from 10 patients scanned with CBCT were used to create two types of images: 1. axial, coronal, and sagittal MPR images and 2. 3D surface models. Eleven observers identified 22 cephalometric landmarks on 3D surface models first and then using 3D in combination with MPR images twice independently. Tracing time was recorded in both methods. Precision was defined as the absolute difference between an observer's repeated measurements and the mean of all measurements per land... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4660865 Mon, 28 Mar 2011 23:00:00 +0100 4660865 http://www.medworm.com/index.php?rid=4660864&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21447782%26dopt%3DAbstract Authors: Petrén S, Bjerklin K, -Åke Marké L, Bondemark L There are few cost evaluation studies of orthodontic treatment. The aim of this study was to determine the costs of correcting posterior crossbites with Quad Helix (QH) or expansion plates (EPs) and to relate the costs to the effects. To determine which alternative has the lower cost, a cost-minimization analysis was undertaken, based on that the outcome of the treatment alternatives is identical. The study comprised 40 subjects in the mixed dentition, who had undergone treatment for unilateral posterior crossbite: 20 with QH and 20 with EPs. Duration of treatment, number of appointments, broken appointments, and cancellations were registered. Direct costs (for the premises, staff salaries, material and laboratory costs) and i... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4660864 Mon, 28 Mar 2011 23:00:00 +0100 4660864 http://www.medworm.com/index.php?rid=4660863&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21447783%26dopt%3DAbstract This study was designed to determine if the faces considered more beautiful in a young population exhibit the same parameters used by orthodontists to assess successful results. A panel of 34 laypeople (30 females and 4 males) evaluated a set containing one frontal, one frontal during smiling, and one profile photograph of 89 students (77 females and 12 males) on a 5-point attractiveness scale, in relation to a set of reference photographs. For each photographic set, the mean and final scores were calculated. Once the sample was established, 11 subjects (9 females and 2 males) with the highest final facial aesthetic score were selected and cephalometric analysis was performed. All cephalometric measurements were within the norm for the total sample. When the sample was divided by gender, W... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4660863 Mon, 28 Mar 2011 23:00:00 +0100 4660863 http://www.medworm.com/index.php?rid=4660862&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21447784%26dopt%3DAbstract This study examined the effects of different sample sizes and different levels of bias (systematic error) between replicated measurements on the accuracy of estimates of random error calculated using two common formulae: Dahlberg's and the 'method of moments' estimator (MME). Computer-based numerical simulations were used to generate clinically realistic measurements involving random errors with a known distribution. For each simulation, two sets of 'measured values' were generated to provide the replicated data necessary for the estimation of the random error. Dahlberg's and the MME formula were applied to these paired data sets and the resulting estimates of error compared with the 'true' error. Nine different sample sizes (n = 2, 5, 10, 15, 20, 25, 30, 50, and 100) and two different typ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4660862 Mon, 28 Mar 2011 23:00:00 +0100 4660862 http://www.medworm.com/index.php?rid=4660868&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21441407%26dopt%3DAbstract Authors: Dos Santos BM, Stuani AS, Stuani AS, Faria G, Quintão CC, Sasso Stuani MB The aim of this study was to evaluate the short- and long-term treatment effects of rapid maxillary expansion (RME) on the soft tissue facial profile of subjects treated with a modified acrylic-hyrax device. The sample comprised 10 males and 10 females in the mixed dentition. Their average age was 9.3 years ± 10 months pre-treatment (T1), with a narrow maxilla and posterior crossbite, treated with a modified fixed maxillary expander with an occlusal splint. Lateral cephalometric radiographs obtained at T1, immediately post-expansion (T2), and after retention (T3) were used to determine possible changes in the soft tissue facial profile. The means and standard deviations for linear and angular cephalome... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4660868 Fri, 25 Mar 2011 00:00:00 +0100 4660868 http://www.medworm.com/index.php?rid=4660869&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21436189%26dopt%3DAbstract Authors: Chhibber A, Upadhyay M, Shetty VS, Mogra S The purpose of this retrospective study was to quantify and compare the vertical dimensional changes in bialveolar dental protrusion patients undergoing extraction of all four first premolars between the preadjusted edgewise appliance (PEA) and the Begg appliance. The cephalometric records of 55 patients (14 males and 41 females) with Class I bimaxillary protrusion were selected and divided into two groups based on the appliance used, i.e Begg or PEA mechanotherapy. To minimize the effects of growth, the subjects were at least in stage VI of skeletal maturation. The mean age was 18.25 ± 3.2 years for the Begg group and 18.03 ± 3.5 years for the PEA group. Skeletal and dental changes were analysed in both groups on lateral cephalogra... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4660869 Thu, 24 Mar 2011 00:00:00 +0100 4660869 http://www.medworm.com/index.php?rid=4660871&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21427171%26dopt%3DAbstract Authors: Tarazona B, Llamas JM, Cibrian R, Gandia JL, Paredes V The aims of the study were to assess speed, reliability, accuracy, and reproducibility in measuring mesiodistal tooth sizes, bicanine widths, bimolar widths, and arch lengths (ALs) using cone beam computed tomography (CBCT) and to compare them with the same measurements obtained using a two-dimensional (2D) Digital Method. Plaster study models were made for 27 patients and then digitalized and measured using a 2D Digital Method. CBCTs were undertaken on the same 27 patients using the Dental Picasso Master 3D® and the images obtained were then analysed using the InVivoDental program. The correlation study of the two measuring methods, which were compared by determining the regression parameters and the values of one method... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4660871 Tue, 22 Mar 2011 00:00:00 +0100 4660871 http://www.medworm.com/index.php?rid=4660872&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21415288%26dopt%3DAbstract Authors: Keng FY, Quick AN, Swain MV, Herbison P The purpose of this study was to conduct a prospective randomized controlled clinical trial to evaluate the rate of space closure and tooth angulation during maxillary canine retraction using preactivated T-loops made from titanium-molybdenum alloy (TMA) and nickel-titanium (NiTi). Twelve patients (six males and six females) aged between 13 and 20 years who had upper premolar extractions were included, and each acted as their own control, with a NiTi T-loop allocated to one quadrant and TMA to the other using a split mouth block randomization design. The loops were activated 3 mm at each visit to deliver a load of approximately 150 g to the upper canine teeth. Maxillary dental casts, taken at the first and each subsequent monthly visit, ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4660872 Thu, 17 Mar 2011 00:00:00 +0100 4660872 http://www.medworm.com/index.php?rid=4660873&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21411476%26dopt%3DAbstract Authors: Antonarakis GS, Kjellberg H, Kiliaridis S Sagittal intermaxillary changes brought about by functional appliances show large inter-individual variation. One factor that may in part explain these differences is the masticatory musculature and its functional capacity. The aims of this study were to investigate changes in maximal molar bite force during functional appliance treatment and to assess the influence of pre-treatment maximal molar bite force on treatment outcomes with functional appliances used in Class II malocclusion children. Twenty-five children (17 males and 8 females), aged 9-13 years, with a Class II malocclusion and increased overjet were treated with functional appliances for 1-2 years. Dental casts, lateral cephalograms, maximal molar bite force, and finger fo... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4660873 Wed, 16 Mar 2011 00:00:00 +0100 4660873 http://www.medworm.com/index.php?rid=4601061&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21402735%26dopt%3DAbstract Authors: Al-Azemi R, Artun J The aim of the study was to establish posteroanterior (PA) cephalometric norms for adolescent Kuwaitis of an age comparable with the start of comprehensive orthodontic treatment, and to compare these with similar normative data, considering a difference of 2.0 mm or degrees as clinically significant. Digital PA cephalograms of 159 13- to 14-year-old Kuwaitis (81 boys and 78 girls) with untreated ideal occlusions were evaluated. Anatomic landmarks were identified directly on digital computer images and linear and angular measurements were calculated electronically. Mean values (norms), standard deviations, and ranges were calculated for the parameters. Student's t-tests were employed to test for gender differences. The dental norms were clinically similar to... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601061 Mon, 14 Mar 2011 00:00:00 +0100 4601061 http://www.medworm.com/index.php?rid=4601060&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21402736%26dopt%3DAbstract Authors: Zhong Z, Zeng XL, Ni JH, Huang XF The aim of this study was to investigate the difference in the biological response of osteoblasts when stretched and compressed. A cellular cyclic tension and compression apparatus (CCTCA) was designed to stretch and compress cells under the same conditions. After stretching or compressing MC3T3-E1 with continuously increased strain for 5 hours, cellular cytoskeletal modulation was detected by immunohistochemical assay with actin antibody. Real-time polymerase chain reaction was performed at 1, 3, and 5 hours to detect local factors related to bone remodelling. Statistical analysis was undertaken with analysis of variance and the Kruskal-Wallis. Following stretching or compression for 5 hours, MC3T3-E1 attached to the culture dishes grew well.... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601060 Mon, 14 Mar 2011 00:00:00 +0100 4601060 http://www.medworm.com/index.php?rid=4601062&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21398319%26dopt%3DAbstract Authors: Vizzotto MB, Liedke GS, Delamare EL, Silveira HD, Dutra V, Silveira HE The purpose of this study was to evaluate the accuracy of airway measurements from lateral cephalograms, cone-beam computed tomographic (CBCT) lateral reconstructions, and CBCT axial planes, as well as to correlate these findings with area measurements acquired with the latter imaging method. Landmarks were defined for the measurements of naso- and oropharynx of 30 patients (12 males and 18 females, mean age 17.5 years), for different planes, using linear antero-posterior measurements and the corresponding area. Analysis of variance showed significant differences in the linear measurements of the oropharynx between the two methods, although all measurements assessed corresponded to the respective areas. The... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601062 Fri, 11 Mar 2011 00:00:00 +0100 4601062 http://www.medworm.com/index.php?rid=4601065&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21393372%26dopt%3DAbstract Authors: Janson G, Valarelli DP, Valarelli FP, de Freitas MR The purpose of this study was to retrospectively compare the treatment times of Class II division 1 malocclusion subjects treated with four first premolar extractions or a non-extraction protocol and fixed edgewise appliances. Eighty-four patients were selected and divided into two groups. Group 1, treated with four first premolar extractions, consisted of 48 patients (27 males and 21 females) with a mean age of 13.03 years and group 2, treated without extractions, consisted of 36 patients (18 males and 18 females) with a mean age of 13.13 years. Group 2 was subdivided into two subgroups, 2A consisting of 16 patients treated in one phase and 2B consisting of 20 patients treated in two phases. The initial and final Treatment P... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601065 Thu, 10 Mar 2011 00:00:00 +0100 4601065 http://www.medworm.com/index.php?rid=4601064&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21393373%26dopt%3DAbstract This study evaluated cephalometric differences between 113 Japanese (43 males and 70 females, aged 14.1 ± 5 years) and 106 European subjects (36 males and 70 females, aged 13.5 ± 7.3 years) using two compound angular measurements and their single components: the overbite depth indicator (ODI) for the assessment of vertical skeletal relationships and the antero-posterior dysplasia indicator (APDI) for an evaluation of sagittal dysgnathia. Both populations were assigned to groups representing Angle Classes I, II, and III, and an anterior open bite (AOB) group. Two sample t- and Wilcoxon signed-ranks tests were performed (P < 0.05). The ODI values showed no statistically significant differences between the Japanese and European samples. The Japanese sample showed a significantly smaller ... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601064 Thu, 10 Mar 2011 00:00:00 +0100 4601064 http://www.medworm.com/index.php?rid=4601063&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21393374%26dopt%3DAbstract Authors: Uemura M, Motoyoshi M, Yano S, Sakaguchi M, Igarashi Y, Shimizu N One notable complication of mini-implants that are used to provide anchorage in orthodontic treatment is loosening. The aim of this study was to evaluate the relationship between mini-implant mobility during the healing phase and the prognosis for implant stability. Twenty male Wistar rats (aged 20 weeks) were used. Drills with diameters of 0.8, 0.9, 1.0, and 1.1 mm were used to make pilot holes in the rat tibiae. The inserted mini-implants (diameter 1.4 mm; spearhead 1.2 mm; halfway between maximum and minimum 1.3 mm; length 4.0 mm) were subjected to an experimental traction of force for 3 weeks. Bone-to-implant contact (BIC) was observed histologically. Another 20 male rats (aged 20 weeks) underwent an identic... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601063 Thu, 10 Mar 2011 00:00:00 +0100 4601063 http://www.medworm.com/index.php?rid=4601067&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21389074%26dopt%3DAbstract Authors: Capelli Junior J, Kantarci A, Haffajee A, Teles RP, Fidel R, Figueredo CM Matrix metalloproteinases (MMPs) and monocyte chemoattractants are key modulators of the biological mechanisms triggered in the periodontium by mechanical forces. The gingival crevicular fluid (GCF) provides a non-invasive method to assess longitudinally the release of inflammatory mediators during orthodontic tooth movement. The goal of this study was to examine the GCF levels of MMP-3, MMP-9, and MMP-13 and of the chemokines macrophage inflammatory protein (MIP)-1β, monocyte chemoattractant protein (MCP)-1, and regulated on activation normal T cells expressed and secreted (RANTES) at different time points during orthodontic tooth movement. Fourteen subjects (three males and 11 females, 18.8 ± 4.8 yea... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601067 Wed, 09 Mar 2011 00:00:00 +0100 4601067 http://www.medworm.com/index.php?rid=4601066&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21389075%26dopt%3DAbstract This study evaluated the influence of intrusion mechanics combined with anterior retraction on root resorption of the maxillary incisors. A sample of 56 patients was divided into two groups: group 1 comprised 28 patients (12 females and 16 males), presenting with an increased overjet and deep overbite (6.48 and 4.78 mm, respectively) treated with reverse curve of Spee intrusion mechanics and group 2 comprised 28 patients (12 females and 16 males) with an increased overjet of 5.67 mm and a normal overbite of 1.12 mm. The initial mean ages for groups 1 and 2 were 13.41 and 13.27 years, respectively. Pre- (T1) and post- (T2) treatment periapical radiographs were used to evaluate root resorption. The groups were compared using the Mann-Whitney U-test. Correlation between root resorption and to... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601066 Wed, 09 Mar 2011 00:00:00 +0100 4601066 http://www.medworm.com/index.php?rid=4601068&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21385857%26dopt%3DAbstract Authors: Schlicher W, Nielsen I, Huang JC, Maki K, Hatcher DC, Miller AJ The purpose of this study was to quantify the consistency and precision of locating three-dimensional (3D) anatomic landmarks. The hypotheses tested are that these landmarks have characteristic and variable error patterns associated with their type and location. The consistency and precision of nine orthodontists identifying 32 landmarks of 19 patients were quantified. The cone beam computed tomography (CBCT) data were acquired using a Hitachi CB MercuRay system. Prior to the study, all examiners were calibrated with respect to the definitions of the landmarks and on the use of the software program (Dolphin) for identifying the landmarks. In addition, a reference guide was provided that had the definitions and sam... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601068 Tue, 08 Mar 2011 00:00:00 +0100 4601068 http://www.medworm.com/index.php?rid=4601069&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21382907%26dopt%3DAbstract Authors: Oztürk F, Babacan H, Gümüs C The aim of this study was to investigate the effects of systemically applied zoledronic acid (ZA) on osteoblastic bone formation and relapse in the rat sagittal suture after expansion. Eighteen 12-week-old male Wistar rats were divided into three groups. In groups 1 and 2, a saline solution was given subcutaneously after expansion and the retention period lasted for 14 and 7 days, respectively. In group 3, 0.1 mg of ZA was diluted with saline and given subcutaneously after expansion: the retention period lasted for 7 days. Computed tomography (CT) measurements were obtained at the start of the study (T1), after expansion (T2), after the retention period (T3), and after the follow-up period (T4). The amount of expansion and relapse and the densit... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601069 Mon, 07 Mar 2011 00:00:00 +0100 4601069 http://www.medworm.com/index.php?rid=4601071&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21378093%26dopt%3DAbstract Authors: Hofmann E, Medelnik J, Fink M, Lell M, Hirschfelder U The aim of this study was to analyze the imaging accuracy of cone beam computed tomography (CBCT) data sets compared with multislice spiral computed tomography (MSCT) data sets in determining the exact mesiodistal width of unerupted porcine tooth germs and to compare the radiologically obtained results of width measurements with the actual mesiodistal dimension of the tooth germs. In MSCT and CBCT data sets, the largest diameter of 24 tooth germs was determined with the aid of the mesial and distal contact points. The reference method used was mesiodistal width measurement using sliding callipers after the tooth germs had been osteotomized. Accuracy and precision were ascertained with difference plots and a one-way model II... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601071 Fri, 04 Mar 2011 00:00:00 +0100 4601071 http://www.medworm.com/index.php?rid=4601070&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21378094%26dopt%3DAbstract Authors: Türköz C, Iscan HN The aim of this study was to determine whether different evaluation methods may be the cause of the varied outcomes of research that have evaluated the effects of extraction and non-extraction therapy on jaw rotation. This retrospective study consisted of the pre- (T1) and post- (T2) treatment lateral cephalograms of 70 skeletal Class I subjects with an optimal vertical mandibular plane angle, who had undergone fixed orthodontic treatment. Thirty-five of the subjects (20 females and 15 males, mean age: 14.7 years) were treated with four first premolar extractions and 35 (22 females and 13 males, mean age: 15 years) without extractions. T1 and T2 radiographs were superimposed using Björk's structural method and Steiner's method of sella-nasion line registe... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601070 Fri, 04 Mar 2011 00:00:00 +0100 4601070 http://www.medworm.com/index.php?rid=4601072&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21372090%26dopt%3DAbstract Authors: Springate SD This investigation was designed to repeat classic studies into the associations between head posture and growth as a single unified study using up-dated methods for gathering and analysing the data. The material comprised the cephalometric radiographs of 59 children (34 males and 25 females) recorded in natural head posture (self-balance position), at the beginning and end of a period of observation during which no treatment was performed (mean age at initial radiograph 11.76 years, mean interval between radiographs 3.52 years). Correlation analysis (corrected for multiple inference and adjusted for dependency between the variables) showed the strongest associations to be between growth direction of the face and the change in posture. No association was found betw... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601072 Thu, 03 Mar 2011 00:00:00 +0100 4601072 http://www.medworm.com/index.php?rid=4601074&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21367816%26dopt%3DAbstract Authors: Migliorati M, Signori A, Silvestrini Biavati A The resistance to extraction of temporary anchorage devices (TADs) depends on various factors, including miniscrew design, shear strength, and bone density. This research introduces the thread shape factor (TSF) as a new factor for the evaluation of TAD mechanical properties. The authors evaluated three TADs for a total of 27 tests: Mini-impianto autoforante (Leone, 1.75 mm diameter and 8 mm length), Orthoscrew (Leader Ortodonzia, 1.65 mm diameter and 9 mm length), and MAS (Miniscrew Anchorage System, 1.3 mm diameter and 11 mm length). For each TAD, the images were acquired via a 20.00 kV scanning electron microscopy to measure their respective mean depth of thread (D), pitch (P), and the relationship between the two (TSF). Subseq... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601074 Wed, 02 Mar 2011 00:00:00 +0100 4601074 http://www.medworm.com/index.php?rid=4601073&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21367817%26dopt%3DAbstract Authors: Lindskog-Stokland B, Hansen K, Ekestubbe A, Wennström JL The aim of this case series was to analyse dimensional alterations of the alveolar ridge and tooth-supporting structures, as well as root resorption, following orthodontic tooth movement into edentulous areas with reduced ridge dimensions. The study involved six subjects (30-70 years) with 10 edentulous jaw areas in the premolar regions. Clinical and radiographic examinations and 3D measurements on scanned study casts were performed at baseline, at retention, and after 1 year of (i) the edentulous area into which the tooth was moved and (ii) the established edentulous area from which the tooth was moved. The orthodontic tooth movement into an edentulous area resulted in most individuals in only minor dimensional alterat... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4601073 Wed, 02 Mar 2011 00:00:00 +0100 4601073 http://www.medworm.com/index.php?rid=4540386&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21357654%26dopt%3DAbstract Authors: Heikinheimo K, Nyström M, Heikinheimo T, Pirttiniemi P, Pirinen S The aims of the present study were to provide data on growth changes in the dental arches from age 7 to 32 in Finns with untreated normal Angle Class I occlusions. The material consisted of 33 series of dental casts of 18 women and 15 men. The subjects had been examined and study models taken at the ages of 7, 10, 12, 15, and 32. Dental arch width, overbite, and overjet were measured. Our longitudinal findings show that both the dental arches of young adults are slightly narrowed from adolescence to 32 years of age. All increases in width dimensions took place before 15 years of age. The means of the changes were mostly small, in the order of 0.5 to a few millimetres. Variability in age changes was considerable... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4540386 Mon, 28 Feb 2011 00:00:00 +0100 4540386 http://www.medworm.com/index.php?rid=4540385&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21357655%26dopt%3DAbstract Authors: Baysal A, Uysal T The aim of this study was to evaluate and compare the changes in soft tissue profile related to treatment with Twin Block and Herbst appliances. Sixty Class II, division 1, mandibular retrognathic patients were divided into three groups. Forty patients were randomly allocated to one of two functional appliance treatment groups. The first group comprised 11 girls and 9 boys (mean age= 12.74 ± 1.43 years) treated with the Herbst appliance. The second group comprised 10 girls and 10 boys (mean age = 13.0 ± 1.32 years) who received treatment with Twin Block appliance. The untreated control group included 9 girls and 11 boys with a mean age of 12.17 ± 1.47 years. Mean treatment time was 15.81 ± 5.96 and 16.20 ± 7.54 months for Herbst and T... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4540385 Mon, 28 Feb 2011 00:00:00 +0100 4540385 http://www.medworm.com/index.php?rid=4540388&cid=s_37680_11_f&fid=37680&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21355062%26dopt%3DAbstract Authors: Ben-Bassat Y, Brin I, Jarjoura R, Regev E Early fracture of the mandibular condyles may be related to an asymmetric morphologic occlusion. The aim of the study was to investigate the morphologic occlusal symmetry of non-surgically treated children after condylar fractures. The original study group consisted of 55 subjects (31 males and 24 females) who suffered temporomandibular joint condylar fractures at a young age and were treated conservatively, with physiotherapy only. Thirty-two of the respondents who were injured at a mean age of 6.5 years (range 9 months-12 years) comprised the study group. Their occlusion was re-examined intra-orally as well as on study models, at the mean age of 10.5 years (range 2.8-20.7 years). Of these, 21 suffered unilateral and 11 bilateral cond... European Journal of Orthodontics journals http://www.medworm.com/rss/comments.php?id=4540388 Fri, 25 Feb 2011 00:00:00 +0100 4540388