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 'Braz Dent J' source. Wed, 08 Feb 2012 12:06:12 +0100 http://www.medworm.com/index.php?rid=5552299&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861027%26dopt%3DAbstract In conclusion, all techniques produced canal transportation, and the oscillatory technique produced the greatest removal of root dentin toward the innerside of the root curvature. PMID: 21861027 [PubMed - indexed for MEDLINE] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5552299 Sat, 31 Dec 2011 04:54:06 +0100 5552299 http://www.medworm.com/index.php?rid=5537864&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189637%26dopt%3DAbstract In conclusion, given the variety of growth factors involved in the complex cascade of bone repair and the biological interactions between them, it remains a challenge to accomplish the ideal strategy to stimulate reparational bone formation in specific conditions of the medical as in the dental practices. PMID: 22189637 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537864 Sun, 25 Dec 2011 03:42:03 +0100 5537864 http://www.medworm.com/index.php?rid=5537863&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189638%26dopt%3DAbstract Authors: Santos LC, Vilas Bôas DS, Oliveira GQ, Ramos EA, Gurgel CA, Santos JN Abstract The aim of this study was to investigate the histopathological features of radicular cysts (RCs) diagnosed in a Brazilian population. Seventy-three cases of RCs, from a total of 1480 biopsies diagnosed between 2001 and 2008 at the Laboratory of Oral Surgical Pathology of the Dental School of the Federal University of Bahia were investigated regarding their histopathological features. Morphological results showed that exocytosis (n=50), spongiosis (n=40), acanthosis (n=28), atrophic epithelium (n=27) and apoptotic bodies (n=21) were the most common findings. Other morphological findings included: foamy macrophages (n=10), Russell's bodies (n=7), cholesterol crystals (n=7) and glandular-like odon... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537863 Sun, 25 Dec 2011 03:42:03 +0100 5537863 http://www.medworm.com/index.php?rid=5537862&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189639%26dopt%3DAbstract Authors: Souza RA, Sousa YT, Figueiredo JA, Dantas Jda C, Colombo S, Pécora JD Abstract Considering that instrumentation of the apical foramen has been suggested for root canal infection control, this study analyzed the relationship between the files that bind at the apical foramen and the foraminal openings in 50 maxillary central incisors. After preparation of the pulp chamber, access to the canal was obtained with #1 and 2 LA Axxess and K-files with tip cut were inserted up to the apical foramen until binding was felt. The files were fixed with methyl cyanoacrylate and the tooth-file sets were cross-sectioned 10 mm short of the apex. Scanning electron microscopic analysis was carried out and files and foraminal areas were measured using Image Tool software. Statistically signif... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537862 Sun, 25 Dec 2011 03:42:03 +0100 5537862 http://www.medworm.com/index.php?rid=5537861&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189640%26dopt%3DAbstract In conclusion, the self-adhesive cement RelyX U100 was the only cement not sensitive to the root canal region. PMID: 22189640 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537861 Sun, 25 Dec 2011 03:42:03 +0100 5537861 http://www.medworm.com/index.php?rid=5537860&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189641%26dopt%3DAbstract This study analyzed the bond strength (BS) of HEMA versus HEMA-free self-etch adhesive systems to dentin. The occlusal surface of 20 third molars was removed and the dentin was abraded with 600-grit silicon carbide paper. The teeth were randomly assigned to 4 groups (n=5) and restored with GO, Adper SE Plus, OptiBond All-In-One, and Clearfil 3S Bond adhesive systems and Filtek Z350 composite. After light curing (600 mW/cm²), the teeth were stored in distilled water at 37ºC for 24 h and were sectioned in the mesiodistal and buccolingual directions to obtain sticks (0.8 mm²). The sticks were subjected to tensile force using a universal testing machine (0.5 mm/min), and the modes of failure were analyzed by scanning electron microscopy and classified as adhesive, cohesive, or mixed. The BS... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537860 Sun, 25 Dec 2011 03:42:03 +0100 5537860 http://www.medworm.com/index.php?rid=5537859&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189642%26dopt%3DAbstract In conclusion, CA was the most erosive solution, and SJ had a similar erosive potential to that of MM natural orange juice. PMID: 22189642 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537859 Sun, 25 Dec 2011 03:42:03 +0100 5537859 http://www.medworm.com/index.php?rid=5537858&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189643%26dopt%3DAbstract Authors: Fontanari LA, Pinto SC, Cavassim R, Spin-Neto R, Ishi Ede P, Sampaio JE Abstract Although in vitro studies have shown encouraging results for root surface conditioning with demineralizing agents, in vivo studies have failed to show its benefits in periodontal healing. This can be attributed to several factors, among which, the hypermineralization of dental surface. Therefore, this in vitro study compared, using scanning electron microscopy (SEM), the effect of root surface conditioning with different conditioners (1% and 25% citric acid, 24% EDTA and 50 mg/mL tetracycline hydrochloride) in impacted teeth and in teeth that had their roots exposed to the oral environment. One trained examiner assessed the SEM micrographs using a root surface modification index. There was a t... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537858 Sun, 25 Dec 2011 03:42:03 +0100 5537858 http://www.medworm.com/index.php?rid=5537857&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189644%26dopt%3DAbstract In conclusion, light sources and thermocycling had no influence on the bond strength of brackets to bovine enamel. PMID: 22189644 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537857 Sun, 25 Dec 2011 03:42:03 +0100 5537857 http://www.medworm.com/index.php?rid=5537856&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189645%26dopt%3DAbstract This study evaluated the release of glutaraldehyde from heat-polymerized acrylic resins subjected to disinfection followed by chemical and mechanical polishing. Ninety disc-shaped specimens (15 x 4 mm), 30 per resin (Lucitone 550, QC-20 and Classico), were made and assigned to 2 groups according to the type of polishing. One side of each specimen was not polished and the other was either mechanically (n=45) or chemically (n=45) polished, and immersed in water at 50°C for 1 h to allow the release of intrinsic substances and then kept in distilled water for 7 days. The specimens were disinfected by immersion in 2% glutaraldehyde for 10 min. After this period, 3 specimens from each group were immersed in water for 15, 30, 60, 120 and 240 min. For the 15-, 30-, 60-min immersions, 4 water exch... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537856 Sun, 25 Dec 2011 03:42:03 +0100 5537856 http://www.medworm.com/index.php?rid=5537855&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189646%26dopt%3DAbstract Authors: Gonçalves TM, Vasconcelos LM, Silva WJ, Del Bel Cury AA, Garcia RC Abstract Hormonal fluctuations during the menstrual cycle may influence on muscular tensions and probably alter occlusal force. The aim of this study was to evaluate whether hormonal levels affect maximum occlusal force (MOF) of healthy women throughout the different phases of the menstrual cycle. Sixty complete dentate subjects who were not under use of oral contraceptives were selected to participate in this study. MOF was bilaterally evaluated on the molar region, during 3 complete menstrual cycles, using 5.65 mm-wide sensors. Measurements were carried out during each of the following menstrual cycle phases: menstrual, follicular, periovulatory and luteal, presumed by ovulation test. Data were analyzed ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537855 Sun, 25 Dec 2011 03:42:03 +0100 5537855 http://www.medworm.com/index.php?rid=5537854&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189647%26dopt%3DAbstract Authors: Basso FG, Oliveira CF, Fontana A, Kurachi C, Bagnato VS, Spolidório DM, Hebling J, Costa CA Abstract The aim of this study was to evaluate the effect of specific parameters of low-level laser therapy (LLLT) on biofilms formed by Streptococcus mutans, Candida albicans or an association of both species. Single and dual-species biofilms - SSB and DSB - were exposed to laser doses of 5, 10 or 20 J/cm2 from a near infrared InGaAsP diode laser prototype (LASERTable; 780 ± 3 nm, 0.04 W). After irradiation, the analysis of biobilm viability (MTT assay), biofilm growth (cfu/mL) and cell morphology (SEM) showed that LLLT reduced cell viability as well as the growth of biofilms. The response of S. mutans (SSB) to irradiation was similar for all laser doses and the biofilm growth wa... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537854 Sun, 25 Dec 2011 03:42:03 +0100 5537854 http://www.medworm.com/index.php?rid=5537853&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189648%26dopt%3DAbstract Authors: Torres CP, Gomes-Silva JM, Mellara TS, Carvalho LP, Borsatto MC Abstract Epidermolysis bullosa (EB) is a heterogeneous group of rare genetic disorders characterized by marked fragility of the skin and mucous membranes in which vesiculobullous lesions occur in response to trauma, heat or no apparent cause. The recessive form of EB presents the greatest oral alterations including repeated blistering and scar formation leading to limited oral opening, ankyloglossia, tongue denudation, microstomia, vestibule obliteration and predisposition to oral carcinoma. Routine dental care may cause bullae formation on the lips and oral mucosa. Together with the ingestion of soft and frequently carbohydrate food, these anomalies lead to a high caries risk. This paper documents a case of a... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537853 Sun, 25 Dec 2011 03:42:03 +0100 5537853 http://www.medworm.com/index.php?rid=5537852&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189649%26dopt%3DAbstract This study was based on patients with squamous cell carcinoma of the anterior two thirds of the tongue that were treated at the Department of Head and Neck Surgery of the “Instituto Portugues de Oncologia de Lisboa - Francisco Gentil” (IPOLFG) in Lisbon, Portugal, between January 1, 2001 and December 31, 2009. The patients were divided in alcohol and tobacco users and non-users in order to evaluate the differences between these 2 groups based on gender, age, tumor location, denture use, and tumor size, metastasis and stage. Of the 354 cases, 208 were users and 146 were non-users. The main location in both groups was the lateral border of the tongue. Denture use showed no significant effect in both study groups. It was possible to conclude that patients who did not drink or smoke were old... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537852 Sun, 25 Dec 2011 03:42:03 +0100 5537852 http://www.medworm.com/index.php?rid=5537851&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22189650%26dopt%3DAbstract Authors: Magalhaes-Junior EB, Aciole GT, Santos NR, Santos JN, Pinheiro AL Abstract The aim of this case report is to present a histologically diagnosed oral lichen planus excised by the CO2 laser. Oral lichen planus is a chronic inflammatory mucocutaneous disease of unknown etiology. Different treatments have been used to manage this condition. A 46 year-old female was referred to the Laser Clinic of the Dental School of the Federal University of Bahia to excise a lesion characterized by white patches on the oral mucosa, which was causing pain and burning sensation and had not respond to treatment with triamcinolone and corticosteroids for 3 months. CO2 laser was used to remove the lesion and the conclusive histopathological diagnosis was oral lichen planus. The patient was follow... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5537851 Sun, 25 Dec 2011 03:42:03 +0100 5537851 http://www.medworm.com/index.php?rid=5347097&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011888%26dopt%3DAbstract Authors: Basso GR, Della Bona A, Gobbi DL, Cecchetti D Abstract The aim of this study was to evaluate in vitro fluoride (F) release from 4 restorative materials (3M ESPE): Ketak Molar Easymix [KME - conventional glass ionomer cement (GIC)]; Rely-X luting 2 [RL2 - resin-modified GIC (RMGIC)]; Vitremer (VIT- RMGIC); and Filtek Z250 [Z250 - negative control]. Disc-shaped specimens were fabricated according to the manufacturer's instructions and placed into 10 mL of reverse osmosis water at 37°C until the analyses were done using a liquid membrane for selective F ion electrode (Orion 710). F release was evaluated every 6 h in the first day and thereafter daily during 28 days (d). The results were analyzed statistically by two-way ANOVA and Tukey's test (α=0.05). Mean F release and st... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347097 Wed, 26 Oct 2011 07:40:03 +0100 5347097 http://www.medworm.com/index.php?rid=5347096&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011889%26dopt%3DAbstract This study investigated the effects of the cement type and the water storage time on the push-out bond strength of a glass fiber post. Glass fiber posts (Fibrekor, Jeneric Pentron) were luted to post spaces using a self-cured resin cement (C&B Cement [CB]), a glass ionomer cement (Ketac Cem [KC]) or a resin-modified glass ionomer cement (GC FujiCEM [FC]) according to the manufacturers' instructions. For each luting agent, the specimens were exposed to one of the following water storage times (n=5): 1 day (T1), 7 days (T7), 90 days (T90) and 180 days (T180). Push-out tests were performed after the storage times. Control specimens were not exposed to water storage, but subjected to the push-out test 10 min after post cementation. Data (in MPa) were analyzed by Kruskal-Wallis and Dunn`s t... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347096 Wed, 26 Oct 2011 07:40:03 +0100 5347096 http://www.medworm.com/index.php?rid=5347095&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011890%26dopt%3DAbstract In conclusion, application of sealant dramatically increased the staining of the restorations exposed to coffee. PMID: 22011890 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347095 Wed, 26 Oct 2011 07:40:03 +0100 5347095 http://www.medworm.com/index.php?rid=5347094&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011891%26dopt%3DAbstract Authors: Giovanini AF, Leonardi DP, Baratto-Filho F, Vlença PC, Moresca RC, Moro A, Schramm CA Abstract The aims of this study were to evaluate the ratio between inflammatory reactions induced by four endodontic sealers and the occurrence of fibrosis and the number of myofibroblasts with positivity to α-smooth-actin muscle (α-SMA). Polyethylene tubes were filled with a root canal sealer (Endofill, AH Plus, Acroseal and Epiphany) and inserted into 4 site at the dorsal region of 24 Wistar rats; 2 empty tubes (control) were grafted in 6 rats. After 7, 21, and 45 days, 8 animals were euthanized, providing 6 specimens per test group and 2 specimens from the control group. The fragments were subjected to histological processing and immunohistochemical analysis for anti α-SMA protein.... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347094 Wed, 26 Oct 2011 07:40:03 +0100 5347094 http://www.medworm.com/index.php?rid=5347093&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011892%26dopt%3DAbstract Authors: Moura-Netto C, Guglielmi Cde A, Mello-Moura AC, Palo RM, Raggio DP, Caldeira CL Abstract The purpose of this in vitro study was to evaluate the effect of neodymium:yttrium-aluminum-garnet (Nd:YAG) laser irradiation on intracanal dentin surface by SEM analysis and its interference in the apical seal of filled canals. After endodontic treatment procedures, 34 maxillary human incisors were randomly assigned to 2 groups. In the negative control group (n=17), no additional treatment was performed and teeth were filled with vertically condensed gutta-percha; in the laser-treated group (n=17), the root canals were irradiated with Nd:YAG laser (1.5 W, 100 mJ, 15 Hz) before filling as described for the control group. Two specimens of each group were prepared for SEM analysis to eva... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347093 Wed, 26 Oct 2011 07:40:03 +0100 5347093 http://www.medworm.com/index.php?rid=5347092&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011893%26dopt%3DAbstract This study evaluated the effect of 980-nm diode laser on apical microleakage and intraradicular dentin morphology. Roots of 110 mandibular incisors were used in the study: 92 for microleakage test and 18 for scanning electron microscopy (SEM). Roots were randomly assigned to 3 groups according to the irrigating solution (water, NaOCl and NaOCl/EDTA) and were divided into 3 subgroups according to the laser irradiation protocol (without irradiation, irradiated at 1.5 W and irradiated at 3.0 W). Two specimens of each subgroup were prepared for SEM. The remaining roots were filled with AH Plus and gutta-percha. Apical leakage was assessed by ink penetration and data were analyzed statistically by ANOVA and Tukey-Krammer test (α=0.05). SEM analysis showed intensification of changes with increa... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347092 Wed, 26 Oct 2011 07:40:03 +0100 5347092 http://www.medworm.com/index.php?rid=5347091&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011894%26dopt%3DAbstract Authors: Sesma N, Gil C, Kolikauskas WA, Silva RA, Pannuti CM Abstract This in vitro study evaluated the temperature of dentures after different microwave irradiation protocols. Two complete dentures (one maxillary and one mandibular denture) were irradiated separately 4 times for each of the following 5 protocols: dentures immersed in water (G1- 6 min, G2- 3 min); dentures kept dry (G3- 6 min); dentures placed in the steam sterilizer (G4- 6 min, G5- 3 min). The final temperature of the dentures was gauged in a thin and in a thick area of each denture with an infrared thermometer. All groups presented an increase in the resin base temperature. The thin areas of the dentures underwent greater heating than the thick areas. There was no significant difference (p>0.05) between the f... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347091 Wed, 26 Oct 2011 07:40:03 +0100 5347091 http://www.medworm.com/index.php?rid=5347090&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011895%26dopt%3DAbstract This study evaluated the effect of different cleansers on the surface of RPD. Five disc specimens (12 mm x 3 mm metallic disc centered in a 38 x 18 x 4 mm mould filled with resin) were obtained for each experimental situation: 6 solutions [Periogard (PE), Cepacol (CE), Corega Tabs (CT), Medical Interporous (MI), Polident (PO), 0.05% sodium hypochlorite (NaOCl), and distilled water (DW) control] and 2 Co-Cr alloys [DeguDent (DD) and VeraPDI (VPDI)] were used for each experimental situation. A 180-day immersion was simulated and the measurements of roughness (Ra, µm) of metal and resin were analyzed using 2-way ANOVA and Tukey's test. The surface changes and tarnishes were examined with a scanning electronic microscopy (SEM). In addition, energy dispersive x-ray spectrometry (EDS) analysis ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347090 Wed, 26 Oct 2011 07:40:03 +0100 5347090 http://www.medworm.com/index.php?rid=5347089&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011896%26dopt%3DAbstract This study evaluated in vitro the photodynamic effect of 0.01% toluidine blue-O (TBO) in combination with an AlGaInP diode laser light source on Aggregatibacter actinomycetemcomitans (A.a.) and Streptococcus sanguinis (S.s.). Suspensions (2 mL) containing A.a. and S.s. at 1.5 x 108 CFU/mL concentration were prepared and divided into 3 groups: Control group (no treatment), Dye group (inoculum and TBO for 5 min) and Dye/Laser group (inoculum, TBO for 5 min and laser for 3 min). Next, a dilution for subsequent subculture in 20 mL of Trypic Soy Agar (A.a) and Brucella Agar (S.s.) in Petri dishes (Pourplate Method) was done. Incubation of A.a. in microaerophilia and S.s. in aerobiosis at 35oC for 48 h was performed for subsequent visual counting of CFU/mL. Data were analyzed by one-way ANOVA an... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347089 Wed, 26 Oct 2011 07:40:03 +0100 5347089 http://www.medworm.com/index.php?rid=5347088&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011897%26dopt%3DAbstract In conclusion, the radiographic techniques evaluated in this study are reliable for vertical bone measurements on selected areas and the UTHSCA Image Tool software is an appropriate measurement method. PMID: 22011897 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347088 Wed, 26 Oct 2011 07:40:03 +0100 5347088 http://www.medworm.com/index.php?rid=5347087&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011898%26dopt%3DAbstract Authors: Alburqueque R, López-López J, Marí-Roig A, Jané-Salas E, Chimenos-Küstner E, Santos JR Abstract The aim of the study was to determine whether there is any relationship between the presence of removable dentures and squamous cell carcinoma of the anterior two thirds of the tongue in a Portuguese population. A retrospective cross-sectional study was conducted on patients with a biopsy-proven diagnosis of squamous cell carcinoma of the tongue, who were seen and treated at the Department of Head and Neck Surgery of the Portuguese Institute of Oncology 'Francisco Gentil', Lisbon, Portugal, during a 3-year period. Several factors were examined: gender, use of removable dentures, age, location of the lesion, and alcohol and tobacco consumption. One hundred and six cases were... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347087 Wed, 26 Oct 2011 07:40:03 +0100 5347087 http://www.medworm.com/index.php?rid=5347086&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011899%26dopt%3DAbstract Authors: Calderon Pdos S, Tabaquim Mde L, Oliveira LC, Camargo AP, Ramos Netto Tde C, Conti PC Abstract The aim of this pilot study was to evaluate the effectiveness of cognitive-behavioral therapy (CBT) and use of amitriptyline, a tricyclic antidepressant, in patients with chronic temporomandibular disorders (TMD). Forty-seven women (mean age = 35.4 years old) with chronic TMD were enrolled in the study and divided into 4 groups: amitriptyline; amitriptyline and CBT; placebo and CBT; and placebo only (control). Patients were managed for 7 consecutive weeks. Follow-up evaluations were done at the 1st, 7th and 11th weeks of treatment. The presence and severity of pain, levels of depression, and quality of life and sleep were measured. Data were analyzed using ANOVA, Chi-square and C... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347086 Wed, 26 Oct 2011 07:40:03 +0100 5347086 http://www.medworm.com/index.php?rid=5347085&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011900%26dopt%3DAbstract Authors: Moreira PR, Cardoso FP, Brito JA, Batista AC, Gomes CC, Gomez RS Abstract Odontogenic myxoma (OM) is an ectomesenchymal benign odontogenic tumor characterized by spindle or stellate-shaped cells embedded in an abundant myxoid or mucoid extracellular matrix. DNA methylation is characterized by the addition of methyl groups in cytosines within CpG islands in the promoter gene. DNA methylation can decrease the expression of tumor suppressor genes and contribute to the development of neoplastic lesions. The aim of study was to evaluate the methylation pattern of the tumor suppressor genes P16 (CDKN2A), P21 (CDKN1A), P27 (CDKN1B), P53 (TP53) and RB1 in OM and dental pulp. Methylation was evaluated using methylation-specific polymerase chain reaction (PCR). The transcription was... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347085 Wed, 26 Oct 2011 07:40:03 +0100 5347085 http://www.medworm.com/index.php?rid=5347084&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011901%26dopt%3DAbstract This study investigated, using cone beam computed tomography (CBCT), the spatial mandibular positioning after rapid maxillary expansion (RME) in Class II Division 1 malocclusion. This prospective study evaluated 17 children (mean initial age 10.36 years old) presenting Class II, Division 1 malocclusion and skeletal maxillary constriction that underwent to RME Haas' protocol. CBCT was performed before treatment (T1), immediately after the stabilization of expander screw (T2) and after the retention period of 6 months (T3). The scans were managed in Dolphin Imaging® 11.0 software, where landmarks (right and left condylion, right and left gonion, and menton) were positioned and measured in relation to sagittal, coronal and axial plane to verify, respectively, transverse, anteroposterior and ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347084 Wed, 26 Oct 2011 07:40:03 +0100 5347084 http://www.medworm.com/index.php?rid=5347083&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22011902%26dopt%3DAbstract This article reports a case of a 52-year-old Caucasian male patient with vWD, who presented with extensive bleeding in the tongue after a lacerating injury caused by accidental biting, and describes some clinical, pathological and treatment aspects of vWD. After repeated attempts to suture the wound and replace clotting factors, a decision was made to perform the ligature of the external carotid artery ipsilateral to the injury. There was favorable resolution of the case, with a good aspect of the scar 2 months after ligation. This case reinforces that it is extremely important to make a thorough review of medical history of all patients, searching for possible bleeding disorders or previous family history. PMID: 22011902 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5347083 Wed, 26 Oct 2011 07:40:03 +0100 5347083 http://www.medworm.com/index.php?rid=5221281&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537581%26dopt%3DAbstract Authors: Castro-Raucci LM, Oliveira IR, Teixeira LN, Rosa AL, Oliveira PT, Jacobovitz M Abstract The present study evaluated the progression of osteogenic cell cultures exposed to a novel calcium aluminate cement (CAC+) in comparison with the gold standard mineral trioxide aggregate (MTA). Cells were enzimatically isolated from newborn rat calvarial bone, plated on glass coverslips containing either CAC+ or a control MTA samples in the center, and grown under standard osteogenic conditions. Over the 10-day culture period, roundening of sample edges was clearly noticed only for MTA group. Although both cements supported osteogenic cell adhesion, spreading, and proliferation, CAC+-exposed cultures showed significantly higher values in terms of total cell number at days 3 and 7, and t... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221281 Thu, 15 Sep 2011 19:44:03 +0100 5221281 http://www.medworm.com/index.php?rid=5221280&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537582%26dopt%3DAbstract Authors: Castañeda ER, Silva LA, Gaton-Hernández P, Consolaro A, Rodriguez EG, Silva RA, Queiroz AM, Nelson-Filho P Abstract The aim of this study was to evaluate the tissue compatibility of a silorane-based resin system (Filtek™ Silorane) and a methacrylate-based nanoparticle resin (Filtek™ Supreme XT) after implantation in the subcutaneous connective tissue of isogenic mice. One hundred and thirty five male isogenic BALB/c mice were randomly assigned to 12 experimental and 3 control groups, according to the implanted material and the experimental period of 7, 21 and 63 days. At the end of each period, the animals were killed and the tubes with the surrounding tissues were removed and processed for microscopic analysis. Samples were subjected to a descriptive and a semi-quan... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221280 Thu, 15 Sep 2011 19:44:03 +0100 5221280 http://www.medworm.com/index.php?rid=5221279&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915513%26dopt%3DAbstract In conclusion, chemically nanostructured Ti surfaces may support the enhancement of endogenous extracellular OPN deposition by osteogenic cells in vitro depending on the etching time, a finding that should be taken into consideration in strategies to biofunctionalize implant surfaces with molecules with cell adhesion capacity. PMID: 21915513 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221279 Thu, 15 Sep 2011 19:44:03 +0100 5221279 http://www.medworm.com/index.php?rid=5221278&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915514%26dopt%3DAbstract This study used scanning electron microscopy (SEM) to evaluate the morphology and adhesion of blood components on root surfaces instrumented by curettes, piezoelectric ultrasonic scaler and Er,Cr:YSGG laser. One hundred samples from 25 teeth were divided into 5 groups: 1) Curettes; 2) Piezoelectric ultrasonic scaler; 3) Curettes plus piezoelectric ultrasonic scaler; 4) Er,Cr:YSGG laser; 5) Curettes plus Er,Cr:YSGG laser. Ten samples from each group were used for analysis of root morphology and the other 10 were used for analysis of adhesion of blood components on root surface. The results were analyzed statistically by the Kruskall-Wallis and Mann-Whitney tests with a significance level of 5%. The group treated with curettes showed smoother surfaces when compared to the groups were instrum... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221278 Thu, 15 Sep 2011 19:44:03 +0100 5221278 http://www.medworm.com/index.php?rid=5221277&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915515%26dopt%3DAbstract Authors: Almeida MQ, Costa OX, Ferreira JM, Menezes VA, Leal RB, Sampaio FC Abstract The aim of this study was to assess in vivo the therapeutic effect of three fluoride varnishes available in the Brazilian market on the performance of white spot lesions (WSL). The sample included 36 children aged 7 to 13 years old, with a total of 67 active WSL in permanent anterior teeth. The children were randomly divided into 3 groups, according to fluoride varnish used: FL- Fluorniz (n=24), DUO - Duofluorid XII (n=22) and DF - Durafluor (n=21). Maximum WSL dimensions (mesiodistal and incisogingival) were measured in millimeters by a previously calibrated single examiner using a periodontal probe. WSL were also assessed regarding lesion activity. Initial and final S-OHI (Simplified Oral Hygiene... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221277 Thu, 15 Sep 2011 19:44:03 +0100 5221277 http://www.medworm.com/index.php?rid=5221276&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915516%26dopt%3DAbstract This study evaluated in vitro the effect of an experimental gel containing iron on the reduction of hydraulic conductance of dentin. Thirty-six 1-mm-thick dentin discs obtained from extracted human third molars were divided into 3 groups of 10 specimens each. The groups corresponded to the following experimental materials: 1.23% acidulated phosphate fluoride gel, pH 4.1; 3% potassium oxalate gel, pH 4.1 (Oxa-Gel®); and iron sulfate gel (10 mmol/L FeSO4), pH 4.1. The gels were applied to dentin under the following conditions: after 37% phosphoric acid and before 6% citric acid. Data were analyzed statistically by ANOVA and Tukey's test at 5% significance level. There was no significant differences (p<0.05) among the groups in any of the conditions for hydraulic conductance reduction, ex... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221276 Thu, 15 Sep 2011 19:44:03 +0100 5221276 http://www.medworm.com/index.php?rid=5221275&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915517%26dopt%3DAbstract In conclusion, Calen/ZO presented the best tissue reaction, followed by Sealapex and ZOE. PMID: 21915517 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221275 Thu, 15 Sep 2011 19:44:03 +0100 5221275 http://www.medworm.com/index.php?rid=5221274&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915518%26dopt%3DAbstract In conclusion, the effect of cleaning the apical region did not differ in the groups, considering root curvature and the surgical diameter of instruments used for apical preparation. The amount of extruded material was greater in canals with mild curvature that were prepared with the 45.02 surgical instrument diameter. PMID: 21915518 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221274 Thu, 15 Sep 2011 19:44:03 +0100 5221274 http://www.medworm.com/index.php?rid=5221273&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915519%26dopt%3DAbstract This study used a mechanical test to evaluate the flexibility of instruments from the K3 (conicity 0.04) and the ProTaper Universal systems when they were new and after 5 uses in simulated canals. Five sets of instruments of each system were tested: K3 (15, 20, 25, 30, 35, 40 and 45) and ProTaper Universal (S1, S2, F1, F2, F3, F4 and F5). Each set of instruments was used to prepare a simulated canal and the same set of instruments was used 5 times (50 canals). The number of each subgroup represented the number of uses: 0 (control), 1, 3 and 5 uses. Before and after each use, the instruments were submitted to a mechanical flexibility test performed in a Versat 502 universal testing machine. Interactions between the instrument and the number of uses were analyzed by ANOVA and Tukey's test at... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221273 Thu, 15 Sep 2011 19:44:03 +0100 5221273 http://www.medworm.com/index.php?rid=5221272&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915520%26dopt%3DAbstract Authors: Nadalin MR, Fregnani ER, Silva-Sousa YT, Perez DE Abstract The aim of this study was to assess the immunohistochemical expression of syndecan-1 (CD138) and Ki-67 in radicular cysts (RC), dentigerous cysts (DC) and keratocystic odontogenic tumors (KOT). Thirty-five RC, 22 DC and 17 KOT were used in the study and immunohistochemical reactions using anti-syndecan-1 and anti-Ki-67 antibodies were performed by the streptavidin-biotin-peroxidase method. Fisher's exact test and Spearman's correlation coefficient were used for statistical analysis of data. Among the studied lesions, no differences in the syndecan-1 expression were observed, but the suprabasal expression of Ki-67 was significantly higher in KOT (p<0.0001), when compared with RC and DC. In RC, there was positive ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221272 Thu, 15 Sep 2011 19:44:03 +0100 5221272 http://www.medworm.com/index.php?rid=5221271&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915521%26dopt%3DAbstract This study evaluated the effect of post types and restorative techniques on the strain, fracture resistance, and fracture mode of incisors with weakened roots. One hundred five endodontically treated bovine incisors roots (15 mm) were divided into 7 groups (n=15). The two control groups were (C) intact roots restored with Cpc (cast posts and core) or Gfp (glass fiber posts). The five experimental groups were (F) flared roots restored with GfpAp (Gfp associated with accessory glass fiber posts), GfpRc (anatomic Gfp, relined with composite resin), and GfpRcAp (anatomized Gfp with resin and accessory glass fiber posts). All teeth were restored with metal crowns. Mechanical fatigue was performed with 3x10(5)/50 N. Specimens were loaded at 45º, and the strain values (μS) were obtained on root... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221271 Thu, 15 Sep 2011 19:44:03 +0100 5221271 http://www.medworm.com/index.php?rid=5221270&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915522%26dopt%3DAbstract Authors: Lopes MC, Consani RL, Mesquita MF, Sinhoreti MA, Consani S Abstract The purpose of the study was to verify the linear displacement of teeth in maxillary complete dentures influenced by different monomer-polymer ratios - according to the manufacturer's instructions, with 25% excess or 25% less monomer content - in the conventional and microwaved polymerization techniques. Wax base plates and wax planes were made on edentulous maxillary stone casts according to traditional method. The set was assembled in semi-adjustable articulator with a lower toothed stone cast as guide to mounting of the maxillary artificial teeth. Impressions were taken from this tooth arrangement with silicone and the mold was used to standardize the mounting of the teeth of all dentures. Referential p... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221270 Thu, 15 Sep 2011 19:44:03 +0100 5221270 http://www.medworm.com/index.php?rid=5221269&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915523%26dopt%3DAbstract In conclusion, only the etching time had significant influence on the bond strength of brackets to ceramic. PMID: 21915523 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221269 Thu, 15 Sep 2011 19:44:03 +0100 5221269 http://www.medworm.com/index.php?rid=5221268&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915524%26dopt%3DAbstract In conclusion, Ortholux LED and Radii LED units provided the highest values of bracket adhesive strength. PMID: 21915524 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221268 Thu, 15 Sep 2011 19:44:03 +0100 5221268 http://www.medworm.com/index.php?rid=5221267&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915525%26dopt%3DAbstract Authors: Nai GA, Grosso RN Abstract The use of fine-needle aspiration biopsy (FNAB) in the diagnosis of odontogenic tumors seems to have attracted little attention. The presence of a firm preoperative diagnosis helps preventing suboptimal surgery, contributing to avoid recurrence of these tumors. A case of ameloblastic carcinoma of the mandible diagnosed by FNAB is presented in this report, illustrating its effectiveness for preoperative diagnosis of odontogenic tumors. A 74-year-old female presented with a painless swelling in the right mandibular angle. A panoramic radiograph revealed a radiolucent lesion in the body of the mandible. Cytological smears from FNAB in the area revealed basaloid cells with a palisade arrangement and presence of stellate-shaped cells. These cytologica... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221267 Thu, 15 Sep 2011 19:44:03 +0100 5221267 http://www.medworm.com/index.php?rid=5221266&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21915526%26dopt%3DAbstract This report describes the clinical procedures involved in the treatment of a complicated crown-root fracture in the maxillary left central incisor with a wide open apex of a 10-year-old male patient, due to fall from his own height. Post-trauma treatment comprised cervical pulpotomy and adhesive tooth fragment reattachment. After 1 year, clinical and radiograph examinations showed pulp necrosis and an associated periapical lesion. Endodontic therapy with calcium hydroxide-base intracanal dressing, root canal filling and orthodontic extrusion were performed. Extrusion was completed within approximately 16 weeks and the tooth was restored with a post-core system and a prosthetic crown. After a 3 years of follow-up, there was no evidence of apical periodontitis and the tooth was satisfactory ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5221266 Thu, 15 Sep 2011 19:44:03 +0100 5221266 http://www.medworm.com/index.php?rid=5160210&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861023%26dopt%3DAbstract This study evaluated the genotypic diversity of S. mutans isolated from dental biofilms formed in vivo under sucrose exposure, as well as their acidogenicity and aciduricity. To form biofilms, subjects rinsed their mouths with distilled water or sucrose solution 8 times/day for 3 days. S. mutans collected from saliva and biofilms were genotyped by arbitrarily-primed PCR. Genotypes identified in the biofilms were evaluated regarding their ability to lower the suspension pH through glycolysis and their acid susceptibility and F-ATPase activity. Most subjects harbored only one genotype in saliva, which was detected in almost all biofilm samples at high proportions. Genotypes isolated only in the presence of sucrose had higher acidogenicity than those isolated only in the presence of water. Ge... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160210 Fri, 26 Aug 2011 21:36:03 +0100 5160210 http://www.medworm.com/index.php?rid=5160209&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861024%26dopt%3DAbstract Authors: Paschoal MA, Gurgel CV, Rios D, Magalhães AC, Buzalaf MA, Machado MA Abstract The present study aimed to compare the fluoride (F-) release pattern of a nanofilled resin-modified glass ionomer cement (GIC) (Ketac N100 - KN) with available GICs used in dental practice (resin-modified GIC - Vitremer - V; conventional GIC - Ketac Molar - KM) and a nanofilled resin composite (Filtek Supreme - RC). Discs of each material (n=6) were placed into 4 mL of deionized water in sealed polyethylene vials and shaken, for 15 days. F- release (μg F-/cm²) was measured each day using a fluoride-ion specific electrode. Cumulative F- release means were statistically analyzed by linear regression analysis. In order to analyze the differences among materials and the influence of time in the da... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160209 Fri, 26 Aug 2011 21:36:03 +0100 5160209 http://www.medworm.com/index.php?rid=5160208&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861025%26dopt%3DAbstract Authors: Volpato FC, Jeremias F, Spolidório DM, Silva SR, Valsecki Junior A, Rosell FL Abstract The aim of this study was to determine the effect of oral environment stabilization (OES) on the counting of Streptococcus mutans in high-caries-risk pregnant women participants of a prevention program in a public teaching institution. The sample was composed of 30 pregnant women aged 18 to 43 years, who looked for treatment at the Preventive Dentistry Clinic of the Araraquara Dental School, UNESP. Saliva samples were collected before and after the OES procedures and were forwarded to the pathology for observation and quantification of S. mutans CFU. There was a decrease in the number of S. mutans CFU, which was significantly different (p<0.0001) between samples. Considering the age ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160208 Fri, 26 Aug 2011 21:36:03 +0100 5160208 http://www.medworm.com/index.php?rid=5160207&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861026%26dopt%3DAbstract This study evaluated the in vitro antibacterial activity of conventional and experimental endodontic irrigants against Enterococcus faecalis. The following substances were evaluated by direct contact test: 2.5% sodium hypochlorite (NaOCl); 2% chlorhexidine (CHX); 1% peracetic acid. After different contact periods (30 s, 1, 3, and 10 min), a neutralizing agent was applied. Serial 10-fold dilutions were prepared and plated onto tryptic soy agar (TSA) and the number of colony-forming units per milliliter (CFU/mL) was determined. Sterile saline was used as a negative control. Both 2.5% NaOCl and 2% CHX eliminated E. faecalis after 30 s of contact. Peracetic acid reduced the bacterial counts by 86% after 3 min and completely eliminated E. faecalis after 10 min. These results allow us to conclud... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160207 Fri, 26 Aug 2011 21:36:03 +0100 5160207 http://www.medworm.com/index.php?rid=5160206&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861027%26dopt%3DAbstract In conclusion, all techniques produced canal transportation, and the oscillatory technique produced the greatest removal of root dentin toward the innerside of the root curvature. PMID: 21861027 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160206 Fri, 26 Aug 2011 21:36:03 +0100 5160206 http://www.medworm.com/index.php?rid=5160205&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861028%26dopt%3DAbstract In conclusion, GT, ProFile, ProTaper and K3 were more effective in removing gutta-percha than manual and Hero instruments. PMID: 21861028 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160205 Fri, 26 Aug 2011 21:36:03 +0100 5160205 http://www.medworm.com/index.php?rid=5160204&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861029%26dopt%3DAbstract In conclusion, all sealers caused moderate to severe inflammation in the earlier evaluation period. However, Sealer 26 and Sealer 26 with thicker consistency caused more intense inflammatory reactions after 21 days of contact with the tissues and no granulomatous reaction was observed for MTA at the final period of analysis. PMID: 21861029 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160204 Fri, 26 Aug 2011 21:36:03 +0100 5160204 http://www.medworm.com/index.php?rid=5160203&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861030%26dopt%3DAbstract Authors: Estrela C, Guedes OA, Silva JA, Leles CR, Estrela CR, Pécora JD Abstract A retrospective survey was designed to identify diagnostic subgroups and clinical factors associated with odontogenic pain and discomfort in dental urgency patients. A consecutive sample of 1,765 patients seeking treatment for dental pain at the Urgency Service of the Dental School of the Federal University of Goiás, Brazil, was selected. Inclusion criteria were pulpal or periapical pain that occurred before dental treatment (minimum 6 months after the last dental appointment), and the exclusion criteria were teeth with odontogenic developmental anomalies and missing information or incomplete records. Clinical and radiographic examinations were performed to assess clinical presentation of pain compl... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160203 Fri, 26 Aug 2011 21:36:03 +0100 5160203 http://www.medworm.com/index.php?rid=5160202&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861031%26dopt%3DAbstract In conclusion, the results of the present study suggest that the prophylactic use of 0.12% chlorhexidine gluconate reduces the frequency of oral mucositis and oral pathogens in children with ALL. In addition, the present findings suggest a possible relationship between coagulase-negative staphylococci and the development of oral mucositis. PMID: 21861031 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160202 Fri, 26 Aug 2011 21:36:03 +0100 5160202 http://www.medworm.com/index.php?rid=5160201&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861032%26dopt%3DAbstract This study assessed the effect of bleaching protocols with 38% hydrogen peroxide (HP) and post-bleaching times on shear bond strength of a composite resin to dentin. One-hundred slabs of intracoronary dentin were included and randomly assigned into 2 groups according to the bleaching protocol: HP (2 applications of 10 min each) and HP activated by LED laser (2 applications of 10 min each/45 s of light activation). Groups were subdivided according to the post-bleaching time (n=10): 1 day, 3 days, 7 days, 10 days and 14 days. The control group was unbleached and restored (n=10). The specimens were restored with Single Bond adhesive system/Filtek Z250 resin using a polytetrafluorethylene matrix and were submitted to the shear bond strength testa after 24 h,. Data were analyzed by ANOVA and Tu... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160201 Fri, 26 Aug 2011 21:36:03 +0100 5160201 http://www.medworm.com/index.php?rid=5160200&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861033%26dopt%3DAbstract Authors: Paulo Ade O, Castro-Silva II, Oliveira DF, Machado ME, Bonetti-Filho I, Granjeiro JM Abstract The aim of this study was to evaluate the bone repair using autogenous periosteum-derived cells (PDC) and bovine anorganic apatite and collagen (HA-COL). PDC from Wistar rats (n=10) were seeded on HA-COL discs and subjected to osteoinduction during 6 days. Critical-size defects in rat calvarias were treated with blood clot (G1), autogenous bone (G2), HA-COL (G3) and HA-COL combined with PDC (G4) (n=40), and then analyzed 1 and 3 months after surgeries. Radiographic analysis exhibited no significant temporal change. G1 and G2 had discrete new marginal bone, but the radiopacity of graft materials in G2, G3 and G4 impaired the detection of osteogenesis. At 3 months, histopathological... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160200 Fri, 26 Aug 2011 21:36:03 +0100 5160200 http://www.medworm.com/index.php?rid=5160199&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861034%26dopt%3DAbstract Authors: Almeida RR, Oltramari-Navarro PV, Almeida MR, Conti AC, Navarro Rde L, Pacenko MR Abstract After exfoliation of the primary incisors and eruption of the permanent incisors, the dentist has the opportunity of observing closely the beginning of occlusal changes. In several cases, alterations, such as lower anterior crowding, can be prevented and treated with proper follow-up. In the mixed dentition, one of the mechanisms for maintaining space and favoring dental alignment is to preserve leeway space before permanent second molar irruption. Among the devices with this function, the Nance lingual arch helps maintaining the position of the permanent mandibular molars and incisors after a premature loss of the primary canines. This paper describes the applicability of Nance ling... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160199 Fri, 26 Aug 2011 21:36:03 +0100 5160199 http://www.medworm.com/index.php?rid=5160198&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861035%26dopt%3DAbstract Authors: Rossi M, Rossi A, Abrão J Abstract Bonded maxillary expansion appliances have been suggested to control increases in the vertical dimension of the face after rapid maxillary expansion (RME). However, there is still no consensus in the literature about its real skeletal effects. The purpose of this prospective study was to evaluate, longitudinally, the vertical and sagittal cephalometric alterations after RME performed with bonded maxillary expansion appliance. The sample consisted of 26 children, with a mean age of 8.7 years (range: 6.9-10.9 years), with posterior skeletal crossbite and indication for RME. After maxillary expansion, the bonded appliance was used as a fixed retention for 3.4 months, being replaced by a removable retention subsequently. The cephalometric st... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160198 Fri, 26 Aug 2011 21:36:03 +0100 5160198 http://www.medworm.com/index.php?rid=5160197&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861036%26dopt%3DAbstract In conclusion, Class III was the most prevalent skeletal deformity and Class I was the least prevalent; in general, the prevalence of skeletal deformities was higher in women; in the majority of patients with skeletal malocclusions there was a combination of maxillary and mandibular problems, which interferes directly in the decision regarding the most adequate treatment plan, and a higher incidence of asymmetry was observed in skeletal Class III; vertical excess occurred in a similar manner in Class II and III and there was a low incidence of biprotrusion among the malocclusions evaluated. PMID: 21861036 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160197 Fri, 26 Aug 2011 21:36:03 +0100 5160197 http://www.medworm.com/index.php?rid=5160196&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21861037%26dopt%3DAbstract Authors: Nagaveni NB, Umashanikara KV, Vidyullatha BG, Sreedevi S, Radhika NB Abstract Permanent mandibular central incisor is rarely affected by tooth shape anomalies of crown and root. Co-occurrence of multiple anomalies in a permanent mandibular central incisor is extremely rare. This paper reports an unusual concurrent combination of multiple dental anomalies affecting both the crown and root of a permanent mandibular left central incisor - talon cusp, dens invaginatus, short root anomaly and macrodontia -, which has not previously been reported together. Case management is described and implications are discussed. The dentist should be aware of these rare entities in order to provide an accurate diagnosis and management for which detailed examination of the tooth both clinical... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=5160196 Fri, 26 Aug 2011 21:36:03 +0100 5160196 http://www.medworm.com/index.php?rid=4876741&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519641%26dopt%3DAbstract Authors: Demarco FF, Conde MC, Cavalcanti BN, Casagrande L, Sakai VT, Nör JE Dental pulp is a highly specialized mesenchymal tissue that has a limited regeneration capacity due to anatomical arrangement and post-mitotic nature of odontoblastic cells. Entire pulp amputation followed by pulp space disinfection and filling with an artificial material cause loss of a significant amount of dentin leaving as life-lasting sequelae a non-vital and weakened tooth. However, regenerative endodontics is an emerging field of modern tissue engineering that has demonstrated promising results using stem cells associated with scaffolds and responsive molecules. Thereby, this article reviews the most recent endeavors to regenerate pulp tissue based on tissue engineering principles and provides insightf... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876741 Sun, 29 May 2011 21:45:03 +0100 4876741 http://www.medworm.com/index.php?rid=4876740&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519642%26dopt%3DAbstract Authors: Bassi AP, Carvalho PS The aim of this study was to evaluate the effect of platelet rich plasma (PRP) associated to bovine inorganic bone (Bio-Oss®; Geistlich) or bioactive glass (Bio-Gran®; Orthovita, Implant Innovations) on bone healing. Bone cavities were prepared in both sides of the mandible of 4 adult male dogs. The cavities were divided into 4 groups according to the filling material as follows: control, PRP, PRP/Bio-Oss, PRP/Bio-Gran. The animals were sacrificed after 120 days and histological and histomorphometrical analysis was performed. The control group showed 80.6% of bone formation in the longitudinal sections at 6 mm depth and 83.7% at 13 mm depth. The transverse sections displayed 74.2% at both 6 and 13 mm depths. The PRP group showed 21.1% of bone formation ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876740 Sun, 29 May 2011 21:45:03 +0100 4876740 http://www.medworm.com/index.php?rid=4876739&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519643%26dopt%3DAbstract Authors: Silveira CM, Pinto SC, Zedebski Rde A, Santos FA, Pilatti GL The aim of this study was to evaluate the subcutaneous biocompatibility of: Epiphany, AH Plus, Pulp Canal Sealer and Sealapex root canal sealers. Sixty rats were randomly assigned to 4 groups, according to the sealer. Polyethylene tubes containing the tested materials were inserted into the connective tissue. The implants were removed after 7, 15 and 30 days, and the tissue samples were processed, stained and examined by light microscopy. The descriptive analysis considered: thickness of the fibrous capsule, severity of the inflammatory reaction, and presence of giant cells. After 7 days, all sealers induced moderate to severe inflammatory reaction. After 15 days, Epiphany and AH Plus sealers showed a moderate inflam... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876739 Sun, 29 May 2011 21:45:03 +0100 4876739 http://www.medworm.com/index.php?rid=4876738&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519644%26dopt%3DAbstract This study evaluated the increase of the instrumented area and dentin thickness in the mesial and distal aspects of mesial canals of mandibular molars after the use of Gates Glidden (GG), LA Axxess (LA) and Orifice Shaper (OS) instruments. A total of 53 canals from 27 mandibular molars were embedded in resin and divided into 3 groups. The roots were sectioned 3 mm below the cementoenamel junction and the images were captured before and after instrumentation. The increase of the instrumented area in terms of percentages and the remaining dentin thickness, in mm, at the mesial and furcal aspects were calculated using the Image tools software. Data were analyzed using the Kruskal-Wallis and Dunn's test. The significance level was set at 5%. All instruments promoted cervical flaring with diffe... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876738 Sun, 29 May 2011 21:45:03 +0100 4876738 http://www.medworm.com/index.php?rid=4876737&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519645%26dopt%3DAbstract This study evaluated the influence of bleaching protocols on intrapulpal temperature and fracture strength of the bleached teeth. Ninety maxillary incisors were assigned to 9 groups (n=10): G1: 35% carbamide peroxide (35% CP), G2: 38% hydrogen peroxide (38% HP), G3: halogen light, G4: LED-laser, G5: 35% CP + halogen light, G6: 38% HP + halogen light, G7: 35% CP + LED-laser, G8: 38% HP + LED-laser, and G9: no treatment (control). Pulp space was widened, a thermocouple was introduced through the apex up to the pulp chamber and the temperature was recorded (°C). The fracture strength (kN) was determined using an Instron machine. Data were analyzed by ANOVA and Tukey's test (p<0.05). The halogen light alone (1.10 ± 0.24) (G3) and associated with 38% HP (1.15 ± 0.30) (G6) produced the hig... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876737 Sun, 29 May 2011 21:45:03 +0100 4876737 http://www.medworm.com/index.php?rid=4876736&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519646%26dopt%3DAbstract Authors: Guinesi AS, Andolfatto C, Bonetti Filho I, Cardoso AA, Passaretti Filho J, Farac RV Most of the problems of endodontic origin have a bacterial etiological agent. Thus, there is a continued interest in seeking more effective chemical substances that can replace the camphorated paramonochiorophenol or antibiotics as intracanal medicaments. Among the possible substances, ozone has some interesting biological characteristics: bactericidal action, debriding effect, angiogenesis stimulation capacity and high oxidizing power. The purpose of this study was to chemically evaluate the presence of ozone in sunflower, castor, olive and almond oil, as well as in propylene glycol and byproducts of ozonation, such as formaldehyde. These compounds were ozonized, inserted into empty and steril... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876736 Sun, 29 May 2011 21:45:03 +0100 4876736 http://www.medworm.com/index.php?rid=4876735&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519647%26dopt%3DAbstract This study evaluated the effectiveness of 3 solvents (Citrol orange oil, Eucalyptol and Tetrachloroethylene) and 2 associations of solvents (Citrol orange oil+Tetrachloroethylene and Eucalyptol+Tetrachloroethylene) on 3 types of gutta-percha (conventional, thermoplastic and EndoREZ) and Resilon. Ten discs (10 mm diameter x 1 mm thick) from each material were prepared using standard metallic molds. Each specimen was weighed to determinate its initial mass. The specimens were immersed in the solvents for 10 min, followed by immersion in distilled water for 20 min, and were then reweighed to obtain the final mass. The mean weight loss determined the solvent capacity. Data were analyzed by ANOVA and Tukey's test at 5% significance level. Tetrachloroethylene was the most effective on convention... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876735 Sun, 29 May 2011 21:45:03 +0100 4876735 http://www.medworm.com/index.php?rid=4876734&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519648%26dopt%3DAbstract In conclusion, the findings of this study showed that the increase of HF etching time affected the surface roughness and the flexural strength of a lithium disilicate-based glass ceramic, confirming the study hypothesis. PMID: 21519648 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876734 Sun, 29 May 2011 21:45:03 +0100 4876734 http://www.medworm.com/index.php?rid=4876733&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519649%26dopt%3DAbstract This study evaluated the loss of the torque applied after use of new screws and after successive tightening. Four infrastructures (IE), using UCLA castable abutment type, were cast in cobalt-chromium alloy and new abutment screws (G1) were used in a first moment. Subsequently, the same abutment screws were used a second time (G2) and more than two times (G3). The values of the torques applied and detorques were measured with a digital torque wrench to obtain the values of initial tightening loss (%). Data were analyzed by ANOVA and Tukey's test (?=0.05). Significant differences were observed between the G1 (50.71% ± 11.36) and G2 (24.01% ± 3.33) (p=0.000) and between G1 (50.71% ± 11.36) and G3 (25.60% ± 4.64) (p=0.000). There was no significant difference between G2 and G3 (p=0.774). W... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876733 Sun, 29 May 2011 21:45:03 +0100 4876733 http://www.medworm.com/index.php?rid=4876732&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519650%26dopt%3DAbstract Authors: Wady AF, Machado AL, Vergani CE, Pavarina AC, Giampaolo ET Water may influence the mechanical properties of the acrylic resins. Thus, the effect of water storage on the impact strength (IS) of one denture base (Lucitone 550 - L) and four reline resins (Tokuyama Rebase II - T; UfiGel Hard - U; Kooliner - K; New Truliner - NT) was evaluated. Bars of L were made (60 x 6 x 2 mm) and relined (2 mm) with T, U, K, NT and L. Intact specimens of each material (60 x 6 x 4 mm) were also fabricated for comparative purposes. Specimens were submitted to Charpy impact tests without water storage (control) and after immersion in water for 7, 90 and 180 days. Data (kJ/m²) analyzed by two-way ANOVA and Tukey's test (p=0.05) revealed that after 90 days, U exhibited an increase in the IS (0.93) ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876732 Sun, 29 May 2011 21:45:03 +0100 4876732 http://www.medworm.com/index.php?rid=4876731&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519651%26dopt%3DAbstract In conclusion, the incidence of MS in complete dentures was high and Periogard was the mouthrinse with the strongest antimicrobial action against MS. The experimental denture cleaning paste showed a slight action against S. mutans after 90 days of treatment. PMID: 21519651 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876731 Sun, 29 May 2011 21:45:03 +0100 4876731 http://www.medworm.com/index.php?rid=4876730&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519652%26dopt%3DAbstract This study estimated the power of another large Brazilian family with GAgP for future linkage analysis. The three-generation family was seen at the Dental School of the Federal University of Bahia. Following the previously described methodology, full-mouth periodontal probing at 6 sites/tooth was performed in all 19 family members. Six out of 12 siblings were affected with GAgP. All affected family members were non-smokers and did not present diabetes or any other systemic condition or consanguinity. A parametric simulation (?=0) was performed on 100 replicates using the statistical software SLINK for linkage analysis. There was maximum expected LOD scores of 3.75 and 3.45 at penetrance rate F=0.98, and both studied phenocopy rates P=0.0 and P=0.02, respectively. The power of the study inc... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876730 Sun, 29 May 2011 21:45:03 +0100 4876730 http://www.medworm.com/index.php?rid=4876729&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519653%26dopt%3DAbstract Authors: Rocha CT, Nelson-Filho P, Silva LA, Assed S, Queiroz AM Dentin dysplasia is a rare defect of dentin development with an autosomal dominant pattern of inheritance, which is generally divided into 2 main classes based on the clinical and radiographic appearance of the affected dental tissues: type I, which affects the root portion and type II, which affects the coronal portion of the tooth. This paper reports the case of a child aged 10 years and 8 months with both classic and atypical features of dentin dysplasia type I in the permanent dentition. Only few mandibular teeth were affected and presented clinically normal appearing crowns, moderate to severe mobility, short, blunt or almost absent roots. However, no evidence of pulp chamber obliteration or periapical radiolucencies... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876729 Sun, 29 May 2011 21:45:03 +0100 4876729 http://www.medworm.com/index.php?rid=4876728&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519654%26dopt%3DAbstract This report describes the interproximal space recovery between the maxillary first and second molars of a 45-year-old female patient before tooth reconstruction. In this case, an orthodontic elastic separator was indicated as an alternative to fixed orthodontic appliances in order to recover the necessary space. The technique was proven efficient, effective, economical, easy to perform and, above all, less invasive than other methods. The interproximal space was regained and a ceramic onlay was cemented for restoring the maxillary second molar. Periodical clinical and radiographic follow-up should be maintained to ensure long-term success. PMID: 21519654 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876728 Sun, 29 May 2011 21:45:03 +0100 4876728 http://www.medworm.com/index.php?rid=4876727&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21519655%26dopt%3DAbstract This report presents a case of subcutaneous emphysema occurred during extraction of a mandibular third molar extraction with the use of an air turbine handpiece. Case management is described and issues relative to the diagnosis and prevention of this surgical complication are discussed. PMID: 21519655 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876727 Sun, 29 May 2011 21:45:03 +0100 4876727 http://www.medworm.com/index.php?rid=4876726&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537580%26dopt%3DAbstract Authors: Estrela C, Alencar AH, Kitten GT, Vencio EF, Gava E In recent years, stem cell research has grown exponentially owing to the recognition that stem cell-based therapies have the potential to improve the life of patients with conditions that range from Alzheimer’s disease to cardiac ischemia and regenerative medicine, like bone or tooth loss. Based on their ability to rescue and/or repair injured tissue and partially restore organ function, multiple types of stem/progenitor cells have been speculated. Growing evidence demonstrates that stem cells are primarily found in niches and that certain tissues contain more stem cells than others. Among these tissues, the dental tissues are considered a rich source of mesenchymal stem cells that are suitable for tissue engineering applica... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876726 Sun, 29 May 2011 21:45:03 +0100 4876726 http://www.medworm.com/index.php?rid=4876725&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537581%26dopt%3DAbstract Authors: Castro-Raucci LM, Oliveira IR, Teixeira LN, Rosa AL, Oliveira PT, Jacobovitz M The present study evaluated the progression of osteogenic cell cultures exposed to a novel calcium aluminate cement (CAC+) in comparison with the gold standard mineral trioxide aggregate (MTA). Cells were enzimatically isolated from newborn rat calvarial bone, plated on glass coverslips containing either CAC+ or a control MTA samples in the center, and grown under standard osteogenic conditions. Over the 10-day culture period, roundening of sample edges was clearly noticed only for MTA group. Although both cements supported osteogenic cell adhesion, spreading, and proliferation, CAC+-exposed cultures showed significantly higher values in terms of total cell number at days 3 and 7, and total protein ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876725 Sun, 29 May 2011 21:45:03 +0100 4876725 http://www.medworm.com/index.php?rid=4876724&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537582%26dopt%3DAbstract Authors: Castañeda ER, Silva LA, Gaton-Hernández P, Consolaro A, Rodriguez EG, Silva RA, Queiroz AM, Nelson-Filho P The aim of this study was to evaluate the tissue compatibility of a silorane-based resin system (FiltekTM Silorane) and a methacrylate-based nanoparticle resin (FiltekTM Supreme XT) after implantation in the subcutaneous connective tissue of isogenic mice. One hundred and thirty five male isogenic BALB/c mice were randomly assigned to 12 experimental and 3 control groups, according to the implanted material and the experimental period of 7, 21 and 63 days. At the end of each period, the animals were killed and the tubes with the surrounding tissues were removed and processed for microscopic analysis. Samples were subjected to a descriptive and a semi-quantitative analys... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876724 Sun, 29 May 2011 21:45:03 +0100 4876724 http://www.medworm.com/index.php?rid=4876723&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537583%26dopt%3DAbstract Authors: Moura FR, Romano AR, Lund RG, Piva E, Rodrigues Júnior SA, Demarco FF This retrospective study evaluated the clinical performance and the reasons for failure of anterior and posterior composite restorations placed by undergraduate dental students over a 3-year period. All cavities were restored using Prime & Bond 2.1 and TPH (Dentsply), according to the manufacturer's indications. One hundred and two patients who had received composite restorations by third and forth year undergraduate students were recalled and examined to analyze the quality of the restorations. The restorations were evaluated using the modified USPHS system. Two hundred and fifty-six composite restorations, 170 in anterior teeth and 86 in posterior teeth, were evaluated. Eighty-five percent of the rest... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876723 Sun, 29 May 2011 21:45:03 +0100 4876723 http://www.medworm.com/index.php?rid=4876722&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537584%26dopt%3DAbstract This study evaluated the fracture resistance of teeth submitted to internal bleaching and restored with different procedures. Forty maxillary incisors were endodontically treated and assigned to 4 groups (n=10): G1- restored with composite resin (CR), G2- bleached with hydrogen peroxide (HP) and restored with CR, G3- restored with CR and fiberglass posts (CR + posts) and G4- bleached and restored with CR + posts. HP was applied in the buccal surface and pulp chamber 3 times at each one of 2 sessions with an interval of 7 days between them. Additional 10 sound incisors were subjected to fracture strength test (gold standard). The fracture strength (kN) was determined in an Instron machine. Data were analyzed by ANOVA and Tukey-Kramer test (α=0.05). The untreated teeth (gold standard) showe... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876722 Sun, 29 May 2011 21:45:03 +0100 4876722 http://www.medworm.com/index.php?rid=4876721&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537585%26dopt%3DAbstract In conclusion, the bonding systems evaluated in this study resulted in specific μTBS and failure patterns due to the particular interaction with enamel. PMID: 21537585 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876721 Sun, 29 May 2011 21:45:03 +0100 4876721 http://www.medworm.com/index.php?rid=4876720&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537586%26dopt%3DAbstract Authors: Moreira PL, Messora MR, Pereira SM, Almeida SM, Cruz AD The aim of this study was to evaluate the accuracy on the diagnosis of secondary caries-like lesions simulated on esthetic restorations of different materials, changing the incidence vertical angle (IVA) of the x-ray beam. Twenty human teeth received MOD inlay preparations. In the experimental group (n=10), a round cavity was made in the floor of the proximal box to simulate the caries-like lesion. All teeth were restored with 3 composite resins (Charisma, Filtek-Z250 and TPH-Spectrum) at 3 moments. Two radiographic images were acquired with 0º and 10º IVA. Ten observers evaluated the images using a 5-point confidence scale. Intra- and interobserver reliability was analyzed with the Interclass Correlation Coefficient an... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876720 Sun, 29 May 2011 21:45:03 +0100 4876720 http://www.medworm.com/index.php?rid=4876719&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537587%26dopt%3DAbstract Authors: Fernández EM, Martin JA, Angel PA, Mjör IA, Gordan VV, Moncada GA The most common treatment in general dental practice is the replacement of restorations affected by secondary caries or marginal deficiencies. Alternative treatments to replacement of defective restorations, such as marginal sealing, refurbishment and repair, have demonstrated improvement of their clinical properties with minimal intervention. The aim of this clinical study was to estimate the median survival time (MST) of marginal sealing, repair and refurbishment of amalgam and resin-based composite restorations with localized defects as a treatment to increase the restoration longevity. A cohort of 66 patients, with 271 class I and II restorations clinically diagnosed with localized defects was longitudinal... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876719 Sun, 29 May 2011 21:45:03 +0100 4876719 http://www.medworm.com/index.php?rid=4876718&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537588%26dopt%3DAbstract Authors: Vasconcelos FM, Massoni AC, Heimer MV, Ferreira AM, Katz CR, Rosenblatt A The aim of the present study was to investigate the prevalence of non-nutritive sucking habits and anterior open bite as well as their main causes (associated factors) in Brazilian children aged 30-59 months. A cross-sectional study was carried out during the National Immunization Day for polio in the city of Recife in the northeastern region of Brazil. The sample was made up of 1,308 children. Data were collected from interviews with mothers or guardians as well as from clinical examinations carried out by previously trained dental students. The chi-square test was used for statistical analysis at 5% significance level. The prevalence of non-nutritive sucking habits was 40%, and the habits were associat... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876718 Sun, 29 May 2011 21:45:03 +0100 4876718 http://www.medworm.com/index.php?rid=4876717&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537589%26dopt%3DAbstract Authors: Baratieri C, Canongia AC, Bolognese AM The aims of the present study were to evaluate the angulation and inclination of permanent maxillary incisors and to correlate the results to the intra-alveolar permanent maxillary canine position during mixed dentition, using cone beam computed tomography (CBCT). The subjects were 30 children aged 7 to 10 years in the inter-transitory period of mixed dentition (permanent incisors and first molars erupted; primary canines, first and second molars erupted; and permanent canines intraosseous). The CBCT scans were obtained and, using the Dolphin Imaging® software - version 11.0, 3D images were reconstructed and the measurements were performed. The angulation of the right and left lateral and central maxillary incisors was measured in relati... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876717 Sun, 29 May 2011 21:45:03 +0100 4876717 http://www.medworm.com/index.php?rid=4876716&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537590%26dopt%3DAbstract This report presents the treatment of a patient aged 15 years and 1 month with Class III skeletal malocclusion, having narrow maxilla, posterior open bite on the left side, anterior crossbite and unilateral posterior crossbite, accentuated negative dentoalveolar discrepancy in the maxillary arch, and maxillary and mandibular midline shift. Clinical examination also revealed maxillary hypoplasia, increased lower one third of the face, concave bone and facial profiles and facial asymmetry with mandibular deviation to the left side. The treatment was performed in three phases: presurgical orthodontic preparation, orthognathic surgery and orthodontic finishing. In reviewing the patient's final records, the major goals set at the beginning of treatment were successfully achieved, providing the ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876716 Sun, 29 May 2011 21:45:03 +0100 4876716 http://www.medworm.com/index.php?rid=4876715&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537591%26dopt%3DAbstract Authors: Assis JS, Rodrigues LK, Fonteles CS, Colares RC, Souza AM, Santiago SL The aim of this study was to evaluate the efficacy of two desensitizing agents in the reduction of dentin hypersensitivity in a randomized, double-blind, split-mouth clinical trial. Seventy-seven teeth from 13 patients that presented some degree of sensitivity to probing and/or air stimulation were treated with one of the following desensitizing agents: Oxa-Gel (G1), Sensi Kill (G2) and placebo gel (G3 - control). According to paired t-test, all treatments, even the placebo gel, were capable of reducing sensitivity scores for both stimuli. Analysis of data by ANOVA and Tukey's test (?=0.05) showed that the sensitivity scores were significantly lower only for Sensi Kill in comparison to the other products (O... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876715 Sun, 29 May 2011 21:45:03 +0100 4876715 http://www.medworm.com/index.php?rid=4876714&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537592%26dopt%3DAbstract Authors: Lino MD, Carvalho FB, Oliveira LR, Magalhães EB, Pinheiro AL, Ramalho LM Oral mucositis is a harmful side effect of radiotherapy (RT) on the head and neck region. There are encouraging reports on the beneficial aspects of the use of laser light on the treatment of oral mucositis. This paper reports the efficacy of laser phototherapy (LPT) on the treatment of oral mucositis in a patient undergoing RT after surgical removal of a squamous cell carcinoma with osseous invasion of the maxilla. Palatal and commissural lesions were treated with λ660 nm, 40 mW, ∅=4 mm², in contact mode, 5 x 2.4 J/cm² per point, 14.4 J/cm² per session. For treating the lesion on the patient's nasal mucosa, LPT (∅=4 mm², λ780 nm, 70 mW, 3 x 2.1 J/cm² per point, 6.3 J/cm² per session, contact... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876714 Sun, 29 May 2011 21:45:03 +0100 4876714 http://www.medworm.com/index.php?rid=4876713&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537593%26dopt%3DAbstract This report describes two cases of Larva migrans in the oral mucosa. The first case was in a 27-year-old woman who presented an erythematous plaque located on the buccal mucosa, extending to a posterior direction, following a linear pattern, to other areas of the mouth. After incisional biopsy of the anterior-most portion of the lesion, morphological details obtained in multiple examined sections suggested Necator or Ancylostoma braziliense larvae as the cause of infection. The second case was in a 35-year-old male who presented a fusiform erythematous plaque in the palatal mucosa. This area was removed and submitted to microscopic examination under a presumptive diagnosis of "parasite migratory stomatitis". The histological characteristics were suggestive of a larva pathway. In both cases... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876713 Sun, 29 May 2011 21:45:03 +0100 4876713 http://www.medworm.com/index.php?rid=4876712&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21537594%26dopt%3DAbstract Authors: Costa DO, Alves AT, Calasans-Maia MD, Cruz RL, Lourenço Sde Q Ameloblastic fibroma is a relatively rare benign odontogenic tumor in which both the epithelial and ectomesenchymal components are neoplastic. An 8-year-old Caucasian boy was referred to the dentist for evaluation of failed eruption of the maxillary left first molar. The panoramic radiograph showed a well-circumscribed unilocular radiolucency involving an unerupted maxillary left first permanent molar. The lesion was enucleated and the material was sent for histopathologic examination. Microscopically, it was composed by cords and islands of odontogenic epithelium in a myxoid cell-rich stroma that closely resemble the dental papilla with histopathological diagnosis of ameloblastic fibroma. After 24 months of follow... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4876712 Sun, 29 May 2011 21:45:03 +0100 4876712 http://www.medworm.com/index.php?rid=4172575&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640364%26dopt%3DAbstract Authors: Motta AC, Furini RB, Simão JC, Ferreira MA, Komesu MC, Foss NT The aim of this study was to determine whether the presence of leprosy reactional episodes could be associated with chronic oral infection. Thirty-eight leprosy patients were selected and divided into 2 groups: group I - 19 leprosy patients with oral infections, and group II - 19 leprosy patients without oral infections. Ten patients without leprosy, but presenting oral infections, were assigned to the control group. Leprosy patients were classified according to Ridley and Jopling classification and reactional episodes of the erythema nodosum type or reversal reaction were identified by clinical and histopathological features associated with serum IL-1, TNF-alpha, IL-6, IFN-gamma and IL-10 levels. These analyses w... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4172575 Wed, 17 Nov 2010 02:30:03 +0100 4172575 http://www.medworm.com/index.php?rid=4172574&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640365%26dopt%3DAbstract Authors: Farias Neto A, Mestriner Junior W, Carreiro Ada F The maintenance of masticatory function is especially important for patients wearing complete dentures due to their limitations. Thus, the bilateral balanced occlusal concept is used to achieve greater masticatory efficiency. However, a critical review of the literature reveals that there is not sufficient scientific evidence to support bilateral balanced occlusion as the most appropriate occlusal concept in complete dentures. Therefore, the aim of this study was to evaluate the masticatory efficiency in complete dentures wearers with bilateral balanced occlusion and canine guidance. A double-blinded controlled crossover clinical trial was conducted. The sample was composed by 24 edentulous patients who wore sets of complete de... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4172574 Wed, 17 Nov 2010 02:30:03 +0100 4172574 http://www.medworm.com/index.php?rid=4108810&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976377%26dopt%3DAbstract Authors: Oliveira JC, Alves FR, Uzeda M, Rôças IN, Siqueira JF The purpose of this study was to investigate the influence of serum and necrotic soft tissue on the antimicrobial activity of intracanal medicaments. The medicaments tested were: calcium hydroxyde/glycerin paste, calcium hydroxide/chlorhexidine paste, calcium hydroxide/camphorated paramonochlorophenol/glycerin paste, and chlorhexidine/zinc oxide paste. Survival of Enterococcus faecalis and Candida albicans exposed to the medicaments tested in the presence or absence of serum or necrotic tissue was monitored in three in vitro experiments where samples for culturing were taken at different time periods. The overall results demonstrated that the antimicrobial activity of all intracanal medicaments tested was slowed down in t... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108810 Fri, 29 Oct 2010 09:30:04 +0100 4108810 http://www.medworm.com/index.php?rid=4108809&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976378%26dopt%3DAbstract This study evaluated the dimensional alterations and the solubility of two experimental endodontic sealers based on Copaifera multijuga oil-resin (Biosealer) and castor oil bean cement (Poliquil), maintained in different storage solutions. Twenty specimens (3 mm diameter and 2 mm height) of each sealer were assigned to 2 groups (n=10) according to the storage solution: simulated tissue fluid (STF) or distilled water (DW). The specimens were stored in these solutions during 90 days, being removed every 30 days for weighting. The solutions were renewed every 15 days. The results were subjected to statistical analysis by Dunn's and Mann-Whitney tests (a=0.05). The solubility of Poliquil was higher in STF (38.4 ± 36.0) than in DW (28.4 ± 15.0), while Biosealer showed higher solubility in DW ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108809 Fri, 29 Oct 2010 09:30:04 +0100 4108809 http://www.medworm.com/index.php?rid=4108808&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976379%26dopt%3DAbstract In conclusion, there was no difference in the cleaning ability of the RinsEndo system and conventional irrigation. PMID: 20976379 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108808 Fri, 29 Oct 2010 09:30:04 +0100 4108808 http://www.medworm.com/index.php?rid=4108807&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976380%26dopt%3DAbstract In conclusion, the ProTaper F1 instrument was better than K3 Endo instrument size 25, 0.06 taper in the removal of CH intracanal medication, regardless of irrigating solution used. PMID: 20976380 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108807 Fri, 29 Oct 2010 09:30:04 +0100 4108807 http://www.medworm.com/index.php?rid=4108806&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976381%26dopt%3DAbstract In conclusion the prevalence of perfect, satisfactory and deficient fillings varied significantly according to the root canal group. The quality parameters categorized fillings in 3 complexity degrees. AE was the most critical parameter of quality in root canal fillings. PMID: 20976381 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108806 Fri, 29 Oct 2010 09:30:04 +0100 4108806 http://www.medworm.com/index.php?rid=4108805&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976382%26dopt%3DAbstract This study evaluated the influence of surface treatment on the shear bond strength of a composite resin (CR), previously submitted to the application of a temporary cement (TC), to an adhesive luting cement. Eight-four CR cylinders (5 mm diameter and 3 mm high) were fabricated and embedded in acrylic resin. The sets were divided into 6 groups (G1 to G6) (n=12). Groups 2 to 6 received a coat of TC. After 24 h, TC was removed and the CR surfaces received the following treatments: G2: ethanol; G3: rotary brush and pumice; G4: air-abrasion; G5: air-abrasion and adhesive system; G6: air-abrasion, acid etching and adhesive system. G1 (control) did not receive TC or any surface treatment. The sets were adapted to a matrix and received an increment of an adhesive luting cement. The specimens were ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108805 Fri, 29 Oct 2010 09:30:04 +0100 4108805 http://www.medworm.com/index.php?rid=4108804&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976383%26dopt%3DAbstract In conclusion, all restorative treatments were able to recover the fracture strength of non-restored teeth to levels similar to those of sound teeth. Using a total-etch adhesive system with bevel preparation significantly improved the resistance to fracture. PMID: 20976383 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108804 Fri, 29 Oct 2010 09:30:04 +0100 4108804 http://www.medworm.com/index.php?rid=4108803&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976384%26dopt%3DAbstract This study ascertained whether under dental erosion models that closely mimics the real-life situation enamel and root dentin from bovine origin would be reliable substitutes for human counterparts. Through a 2x2 crossover design, in a first trial, 14 volunteers wore a palatal device containing slabs of bovine and human enamel. Half of the participants ingested (4x daily, for 10 days) orange juice first, crossing over to mineral water, while the remainder received the reverse sequence. In a second trial, volunteers wore devices with slabs of bovine and human root dentin. Except for the duration of each intraoral phase, which lasted 2 rather 10 days, the experiment with root dentin run exactly as for enamel. Dental substrates were analyzed for surface microhardness. Two-way ANOVAs (α=0.05)... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108803 Fri, 29 Oct 2010 09:30:04 +0100 4108803 http://www.medworm.com/index.php?rid=4108802&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976385%26dopt%3DAbstract This study evaluated the influence of a cola-type soft drink and a soy-based orange juice on the surface and subsurface erosion of primary enamel, as a function of the exposure time. Seventy-five primary incisors were divided for microhardness test (n=45) or scanning electron microscopy (SEM) analysis (n=30). The specimens were randomly assigned to 3 groups: 1 - artificial saliva (control); 2 - cola-type soft drink; and 3 - soy-based orange juice. Immersion cycles in the beverages were undertaken under agitation for 5 min, 3 times a day, during 60 days. Surface microhardness was measured at 7, 15, 30, 45 and 60 days. After 60 days, specimens were bisected and subsurface microhardness was measured at 30, 60, 90, 120, 150 and 200 µm from the surface exposed. Data were analyzed by ANOVA and ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108802 Fri, 29 Oct 2010 09:30:04 +0100 4108802 http://www.medworm.com/index.php?rid=4108801&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976386%26dopt%3DAbstract Authors: Cruz AD, Cogo K, Bergamaschi Cde C, Bóscolo FN, Groppo FC, Almeida SM The aim of this study was to examine Streptococcus mutans biofilm growth on both aged and non-aged restorative dental resins, which were submitted to therapeutic irradiation. Sixty-four disks of an esthetic restorative material (Filtek Supreme) were divided into 2 groups: aged group (AG) and a non-aged group (NAG). Each group was subdivided into 4 subgroups: non-irradiated and irradiated with 10Gy, 35Gy, and 70Gy. The biofilms were produced by Streptococcus mutans UA159 growing on both AG and NAG surfaces. The colony-forming units per mL (CFU/mL) were evaluated by the ANOVA and the Tukey LSD tests (α=0.05). AG presented smaller amounts of CFU/mL than the NAG before irradiation and after 10Gy of irradiation... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108801 Fri, 29 Oct 2010 09:30:04 +0100 4108801 http://www.medworm.com/index.php?rid=4108800&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976387%26dopt%3DAbstract Authors: Farias Gomes SG, Custodio W, Moura Jufer JS, Del Bel Cury AA, Rodrigues Garcia RC The aims of this study were to correlate masticatory performance with mandibular movements during mastication, and to evaluate masticatory performance and mandibular movements of subjects with different types of mastication. Seventy-eight healthy dentate subjects were selected and divided into 2 groups: bilateral and unilateral chewers. This classification was set by using kinesiography during mastication of an artificial material. Unilateral mastication was defined as the majority of the cycles took place at one specific side. The same tracings used to define type of mastication were used to evaluate mandibular movements by means of its parameters. Masticatory performance was analyzed by comminu... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108800 Fri, 29 Oct 2010 09:30:04 +0100 4108800 http://www.medworm.com/index.php?rid=4108799&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976388%26dopt%3DAbstract Authors: Mazzetto MO, Hotta TH, Pizzo RC The aim of this study was to evaluate the effectiveness of low-level laser therapy (LLLT) on the improvement of the mandibular movements and painful symptoms in individuals with temporomandibular disorders (TMD). Forty patients were randomly divided into two groups (n=20): Group 1 received the effective dose (GaAlAs laser ? 830 nm, 40 mW, 5J/cm2) and Group 2 received the placebo application (0 J/cm2), in continuous mode on the affected condyle lateral pole: superior, anterior, posterior, and posterior-inferior, twice a week during 4 weeks. Four evaluations were performed: E1 (before laser application), E2 (right after the last application), E3 (one week after the last application) and E4 (30 days after the last application). The Kruskal-Wallis t... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108799 Fri, 29 Oct 2010 09:30:04 +0100 4108799 http://www.medworm.com/index.php?rid=4108798&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976389%26dopt%3DAbstract Authors: Amaral FR, Gomes CC, Oliveira CS, Souza PE, Gomez RS Despite the importance of clonality to understand the pathogenesis and progression of tumors, it has not been investigated yet in giant cell lesions of the jaws. The aim of this study was to analyze the clonality of peripheral giant cell lesions (PGCL) and central giant cell lesions (CGCL) of the jaws. Six samples of PGCL and 5 samples of CGCL were analyzed in this study using the polymorphic human androgen receptor locus (HUMARA) assay. Three out of the 5 samples of the CGCL and 3 out of 6 samples of PGCL exhibited a monoclonal pattern. Our findings demonstrate that some giant cell lesions of the jaws are clonal, which indicate that these lesions may have a common genetic mechanism of development. Further studies are necess... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108798 Fri, 29 Oct 2010 09:30:04 +0100 4108798 http://www.medworm.com/index.php?rid=4108797&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976390%26dopt%3DAbstract Authors: Aciole GT, Aciole JM, Soares LG, Santos NR, Santos JN, Pinheiro AL This paper reports the treatment of oral lymphangiomas with carbon dioxide CO2 Laser. Lymphangiomas are rare congenital lymphatic malformations. These lesions are most frequently diagnosed during childhood, are most commonly located in the head and neck region, and are extremely rare in the oral cavity. Oral lymphangiomas are of complex treatment due to the difficulty in performing a complete excision. CO2 laser is the most often used laser in the oral cavity due to its affinity with water and high absorption by the oral mucosa. Several benefits of the use of CO2 laser have been reported for surgical oral procedures. The cases reported herein were biopsy-proven lymphangiomas of the oral cavity. The surgical pro... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108797 Fri, 29 Oct 2010 09:30:04 +0100 4108797 http://www.medworm.com/index.php?rid=4108796&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976391%26dopt%3DAbstract Authors: Avila ED, Molon RS, Conte Neto N, Gabrielli MA, Hochuli-Vieira E Hemangiomas are benign tumors of infancy and childhood, characterized by a phase of fast growth with endothelial cell proliferation, occurring in 10-12% of children at 1 year of age. It is known that hemangiomas of infancy are most commonly located on the head and neck region (around 60% of cases) and occur more frequently in the lips, tongue, and palate. Approximately 50% of hemangiomas have complete resolution, and 90% of them are resolved up to the age of 9. Complications occur in only 20% of the cases, the most common problem being ulceration with or without infection. The treatment depends on lesion location, size and evolution stage, and the patient's age. Surgery is usually indicated when there is no respo... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108796 Fri, 29 Oct 2010 09:30:04 +0100 4108796 http://www.medworm.com/index.php?rid=4108795&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20976392%26dopt%3DAbstract Authors: Nagaveni NB, Umashankara KV, Sreedevi , Reddy BP, Radhika NB, Satisha TS Mesiodens is a midline supernumerary tooth commonly seen in the maxillary arch and the talon cusp is a rare dental developmental anomaly seen on the lingual surface of anterior teeth. This paper presents a rare clinical case of development of talon cusp in a mesiodens with multiple lobes, which interfered with both occlusion and appearance of an 11-year-old patient. During clinical interview, the patient reported difficulty on mastication. Clinical and radiographic examination revealed that a supernumerary tooth with completely formed root was causing an occlusal interference. The supernumerary tooth was diagnosed as multi-lobed mesiodens associated with a palatal talon cusp. The treatment plan consisted ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=4108795 Fri, 29 Oct 2010 09:30:04 +0100 4108795 http://www.medworm.com/index.php?rid=3767936&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640353%26dopt%3DAbstract Authors: Lima-Arsati YB, Martins CC, Rocha LA, Cury JA Fingernail has been suggested as a biomarker of fluoride (F) body burden, but there is no consensus if it would be a reliable indicator of F exposure from dentifrice. Therefore, the present study was conducted to investigate if fingernails would have sensitivity to detect F exposure from dentifrice in young children. Twenty-three 1-3-year-old children living in the city of Piracicaba (0.72 ppm F in water), Brazil, were enrolled in two phases of different F exposure: in phase A (1st to 11th week), they were exposed to the combination of F from diet (solids and liquids) and dentifrice (1,500 microg F/g as MFP), and in phase B (12th to 29th week), only to F from diet (the use of F dentifrice was interrupted). Fingernails were weekly c... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767936 Tue, 20 Jul 2010 20:15:03 +0100 3767936 http://www.medworm.com/index.php?rid=3767935&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640354%26dopt%3DAbstract In conclusion, FOB and OGLC cements showed a higher capacity of capturing and releasing fluoride compared to the other cements studied. PMID: 20640354 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767935 Tue, 20 Jul 2010 20:15:03 +0100 3767935 http://www.medworm.com/index.php?rid=3767934&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640355%26dopt%3DAbstract This study investigated the influence of ceramic compositions on Knoop Hardness Number (KHN) immediately and 24 h after polymerization and the effect of activation modes on the KHN of a resin cement. Ten Panavia F 2.0 resin cement discs were activated either directly using curing light, or chemically without light, or through 1.2-thick ceramic discs. The following ceramics were evaluated: Duceram, Cergogold, IPS Empress, IPS Empress 2, Procera, Cercon, In Ceram Alumina and In Ceram Zirconia. The KHN was obtained immediately and after 24-h testing time. Two-way ANOVA and Tukey's test were performed for statistical analysis (p<0.05). Direct activation showed higher KHN than activation through ceramics and chemical activation for both immediate and 24-h post activation. The KHN for 24-h po... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767934 Tue, 20 Jul 2010 20:15:03 +0100 3767934 http://www.medworm.com/index.php?rid=3767933&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640356%26dopt%3DAbstract This study evaluated the effect of surface treatments on the shear bond strength (SBS) of a resin cement to commercially pure titanium (CP Ti). Ninety cast CP Ti discs were divided into 3 groups (n=30), which received one of the following airborne-particle abrasion conditions: (1) 50 ?m Al2O3 particles; (2) 30 ?m silica-modified Al2O3 particles (Cojet Sand); (3) 110 ?m silica-modified Al2O3 particles (Rocatec). For each airborne-particle abrasion condition, the following post-airborne-particle abrasion treatments were used (n=10): (1) none; (2) adhesive Adper Single Bond 2; (3) silane RelyX Ceramic Primer. RelyX ARC resin cement was bonded to CP Ti surfaces. All specimens were thermally cycled before being tested in shear mode. Failure mode was determined. The best association was Rocatec ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767933 Tue, 20 Jul 2010 20:15:03 +0100 3767933 http://www.medworm.com/index.php?rid=3767932&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640357%26dopt%3DAbstract This study evaluated the Knoop hardness and polymerization depth of a dual-cured resin cement, light-activated at different distances through different thicknesses of composite resin. One bovine incisor was embedded in resin and its buccal surface was flattened. Dentin was covered with PVC film where a mold (0.8-mm-thick and 5 mm diameter) was filled with cement and covered with another PVC film. Light curing (40 s) was carried out through resin discs (2, 3, 4 or 5 mm) with a halogen light positioned 0, 1, 2 or 3 mm from the resin surface. After storage, specimens were sectioned for hardness measurements (top, center, and bottom). Data were subjected to split-plot ANOVA and Tukey's test (a=0.05). The increase in resin disc thickness decreased cement hardness. The increase in the distance o... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767932 Tue, 20 Jul 2010 20:15:03 +0100 3767932 http://www.medworm.com/index.php?rid=3767931&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640358%26dopt%3DAbstract Authors: Ricomini Filho AP, Fernandes FS, Straioto FG, Silva WJ, Del Bel Cury AA Preload loss can favor the occurrence of implant-abutment interface misfit, and bacterial colonization at this interface may lead to implant failure. The aim of this study was to evaluate the preload loss and bacterial penetration through the implant-abutment interface of conical and external hexagon connection systems subjected to thermal cycling and mechanical fatigue (TM). Four different implant-abutment connection systems were evaluated (n=6): external hexagon with universal post, Morse taper with universal post, Morse taper with universal post through bolt, and locking taper with standard abutment. The assemblies (implant-abutment) were subjected to a thermal cycling regimen (1,000 cycles of 5 degrees... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767931 Tue, 20 Jul 2010 20:15:03 +0100 3767931 http://www.medworm.com/index.php?rid=3767930&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640359%26dopt%3DAbstract Authors: Soares PB, Magalhães D, Fernandes Neto AJ, Castro CG, Santos Filho PC, Soares CJ The aim of this study was to evaluate the influence of different periodontal therapies on the integrity of indirect restorations by scanning electron microscopy (SEM). Sixty single-rooted bovine teeth were selected and randomly assigned to 12 groups. Inlay cavities were prepared in the cervical region on the center of the cementoenamel junction, and were restored with laboratory processed resin and luted with a resin cement. Twelve periodontal therapies were used (n= 5): C: control (no treatment); MS: manual scaling with Gracey curettes; US: ultrasonic scaling; PP: prophylaxis with prophylactic paste; PS: prophylaxis with pumice-stone; SBJ: sodium bicarbonate jet; MS/PP; MS/PS; MS/SBJ; US/PP; U... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767930 Tue, 20 Jul 2010 20:15:03 +0100 3767930 http://www.medworm.com/index.php?rid=3767929&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640360%26dopt%3DAbstract Authors: Rapp GE, Pineda-Trujillo N, McQuillin A, Tonetti M Aggressive periodontitis is a multifactorial disease with strong familial aggregation. Genetic linkage analysis is a method to localize causative or predisposing genes along the chromosome, thus helping to unravel important pathogenic pathways. Prior to applying this method, however, it is essential to estimate the power of the study design. The aim of this study was to estimate the power of a large Brazilian family with generalized aggressive periodontitis (GAgP) for future linkage analysis. A three-generation family was seen at the Dental School of the Federal University of Bahia. A full-mouth periodontal probing at 6 sites/tooth was performed in all 23 family members. Five out of 10 siblings were affected with GAgP. A param... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767929 Tue, 20 Jul 2010 20:15:03 +0100 3767929 http://www.medworm.com/index.php?rid=3767928&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640361%26dopt%3DAbstract In conclusion, the tested sealers influenced the radiographic perceptions of laterally condensed root canal fillings in a different way. PMID: 20640361 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767928 Tue, 20 Jul 2010 20:15:03 +0100 3767928 http://www.medworm.com/index.php?rid=3767927&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640362%26dopt%3DAbstract In conclusion, all canals presented residual filling material after endodontic retreatment procedures. Microscopic analysis was more effective than radiographs for detection of residual filling material. PMID: 20640362 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767927 Tue, 20 Jul 2010 20:15:03 +0100 3767927 http://www.medworm.com/index.php?rid=3767926&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640363%26dopt%3DAbstract Authors: Guedes OA, Alencar AH, Lopes LG, Pécora JD, Estrela C Epidemiologic aspects of traumatic dental injuries (TDI) were evaluated in the permanent dentition in a sample of 847 patients treated at the Dental Urgency Service of the Dental School of the Federal University of Goiás, Brazil, between May 2000 and May 2008. The statistical treatment analyzed data from frequency distribution and chi-square test. The level of significance was set at 5% for all analyses. The results showed a higher incident among males (610; 72.01%) with mean age of 6-10 year-old. Uncomplicated crown fracture (without pulp exposure) (502; 26.95%), avulsion (341; 18.30%) and complicated crown fracture (with pulp exposure) (330; 17.71%) were the most prevalent TDI. The prevalence of trauma throughout th... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767926 Tue, 20 Jul 2010 20:15:03 +0100 3767926 http://www.medworm.com/index.php?rid=3767925&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640364%26dopt%3DAbstract Authors: Motta AC, Furini RB, Simão JC, Ferreira MA, Komesu MC, Foss NT The aim of this study was to determine whether the presence of leprosy reactional episodes could be associated with chronic oral infection. Thirty-eight leprosy patients were selected and divided into 2 groups: group I - 19 leprosy patients with oral infections, and group II - 19 leprosy patients without oral infections. Ten patients without leprosy, but presenting oral infections, were assigned to the control group. Leprosy patients were classified according to Ridley and Jopling classification and reactional episodes of the erythema nodosum type or reversal reaction were identified by clinical and histopathological features associated with serum IL-1, TNF-?, IL-6, IFN-? and IL-10 levels. These analyses were pe... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767925 Tue, 20 Jul 2010 20:15:03 +0100 3767925 http://www.medworm.com/index.php?rid=3767924&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640365%26dopt%3DAbstract Authors: Farias Neto A, Mestriner Junior W, Carreiro Ada F The maintenance of masticatory function is especially important for patients wearing complete dentures due to their limitations. Thus, the bilateral balanced occlusal concept is used to achieve greater masticatory efficiency. However, a critical review of the literature reveals that there is not sufficient scientific evidence to support bilateral balanced occlusion as the most appropriate occlusal concept in complete dentures. Therefore, the aim of this study was to evaluate the masticatory efficiency in complete dentures wearers with bilateral balanced occlusion and canine guidance. A double-blinded controlled crossover clinical trial was conducted. The sample was composed by 24 edentulous patients who wore sets of complete de... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767924 Tue, 20 Jul 2010 20:15:03 +0100 3767924 http://www.medworm.com/index.php?rid=3767923&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20640366%26dopt%3DAbstract Authors: Canger EM, Celenk P, Yenísey M, Odyakmaz SZ Amelogenesis imperfecta (AI) is a hereditary disorder expressing a group of conditions that cause developmental alterations in the structure of enamel. AI is a serious problem that reduces oral health-related quality of life and causes some physiological problems. The treatment of patients with AI may upgrade the quality of life and reinforce their self-esteem. Among the treatment options for AI, full-mouth metal reinforced porcelain restoration constitutes an important alternative because of its properties. This paper presents a case of AI of the hypoplastic rough type associated with a group of dental anomalies, and describes the prosthetic management of the patient. A 26-year-old female patient presented with a chief complaint ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3767923 Tue, 20 Jul 2010 20:15:03 +0100 3767923 http://www.medworm.com/index.php?rid=3566989&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464314%26dopt%3DAbstract Authors: Carvalho DR, Carvalho PS, Magro Filho O, de Mello JD, Beloti MM, Rosa AL The aims of this study were to characterize the microstructure of a commercially pure titanium (cpTi) surface etched with HCl/H2SO4 (AE-cpTi) and to investigate its in vitro cytocompatibility compared to turned cpTi (T-cpTi). T-cpTi showed a grooved surface and AE-cpTi revealed a surface characterized by the presence of micropits. Surface parameters indicated that the AE-cpTi surface is more isotropic and present a greater area compared to T-cpTi. The oxide film thickness was similar between both surfaces; however, AE-cpTi presented more Ti and O and less C. Osteoblastic cell proliferation, alkaline phosphatase activity, and bone-like nodule formation were greater on T-cpTi than on AE-cpTi. These results ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3566989 Fri, 01 Jan 2010 00:00:00 +0100 3566989 http://www.medworm.com/index.php?rid=3566988&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464315%26dopt%3DAbstract This study evaluated the influence of retorque on loosening torque (Lt) of prosthetic screws in implant-supported dentures with different fit levels. Ten mandibular implant-supported dentures were fabricated and then 20 cast models were then prepared using prosthetic structures to create 2 fit levels: passive fit (Pf) and misfit (Mf). Two tightening techniques were also evaluated: initial torque only (T1); and initial torque and retorque after 10 min (T2). Gold or titanium screws were used, resulting in 4 groups to each one: Pf/T1, Pf/T2, Mf/T1, Mf/T2. The Lt was measured 24 h after the tightening torque using digital torque meter. Data were analyzed statistically by two-way ANOVA and Tukey's test (alpha=0.05), separately for each screw material. For titanium screws, no significant differe... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3566988 Fri, 01 Jan 2010 00:00:00 +0100 3566988 http://www.medworm.com/index.php?rid=3566987&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464316%26dopt%3DAbstract Authors: Xavier SP, Ikuno KE, Tavares MG It has recently been reported that machined and microrough (micro) Brazilian titanium (Ti) implants have good production standards. The aim of this study was to evaluate in vivo bone formation around 2 different implant surfaces placed in dog's mandible. Thirty-two screw-typed Ti implants were used in this study. Mandibular premolars were extracted in 8 dogs and, after 12 weeks, 2 machined (Neodent Titamax, Brazil) and 2 micro implants (Neodent Titamax Porous, Brazil) were placed in each animal. Biopsies were taken at 3 and 8 weeks post-implantation and stained with Stevenel's blue and Alizarin red for histomorphometric measurements of bone-to-implant contact (BIC), bone area between threads (BABT) and bone area within the mirror area (BAMA). Da... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3566987 Fri, 01 Jan 2010 00:00:00 +0100 3566987 http://www.medworm.com/index.php?rid=3566986&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464317%26dopt%3DAbstract In conclusion, White-MTA and MTA-Bio presented low cytotoxic effects on odontoblast-like cell (MDPC-23) cultures. PMID: 20464317 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3566986 Fri, 01 Jan 2010 00:00:00 +0100 3566986 http://www.medworm.com/index.php?rid=3566985&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464318%26dopt%3DAbstract Authors: Catani DB, Tenuta LM, Andaló FA, Cury JA Considering that blood fluoride concentration varies according to fluoride exposure and that dental fluorosis is related to the amount of enamel formed under a given fluoride dose, the present study investigated whether the fluorosis produced by an oscillating chronic fluoride dose would be similar to that caused by exposure to a constant dose, representing the mean of the oscillation during a given time. Rats received during 78 days water with fluoride concentrations of 0, 12.5, 25 or 37.5 microg F/mL, or oscillating concentrations of 12.5 and 37.5 microg F/mL every 72 h (mean exposure=25 microg F/mL). The concentrations of fluoride in the plasma, femur and incisors of the rats were determined at the end of the experimental period. ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3566985 Fri, 01 Jan 2010 00:00:00 +0100 3566985 http://www.medworm.com/index.php?rid=3566984&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464319%26dopt%3DAbstract This study aimed to assess the response of apical and periapical tissues of dogs' teeth after root canal filling with different materials. Forty roots from dogs' premolars were prepared biomechanically and assigned to 4 groups filled with: Group I: commercial calcium hydroxide and polyethylene glycol-based paste (Calen) thickened with zinc oxide; Group II: paste composed of iodoform, Rifocort and camphorated paramonochlorophenol; Group III: zinc oxide-eugenol cement; Group IV: sterile saline. After 30 days, the samples were subjected to histological processing. The histopathological findings revealed that in Groups I and IV the apical and periapical regions exhibited normal appearance, with large number of fibers and cells and no resorption of mineralized tissues. In Group II, mild inflamm... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3566984 Fri, 01 Jan 2010 00:00:00 +0100 3566984 http://www.medworm.com/index.php?rid=3566983&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464320%26dopt%3DAbstract Authors: Tanomaru-Filho M, Orlando TA, Bortoluzzi EA, Silva GF, Tanomaru JM The aim of this study was to evaluate the effectiveness of 3 solvents (eucalyptol, orange oil, and xylol) on 2 types of gutta-percha (conventional and thermoplastic) and Resilon. Specimens (10 mm diameter x 1 mm thick; n=7 per condition) were prepared and maintained at 37 degrees C for 48 h. Each specimen was weighed on a precision scale every 24 h until its mass was stable, at which time the initial mass was determined. Specimens (n=7) were then immersed in the solvent solutions and, after 48 h at 37 degrees C, they were reweighed at 24- h intervals, until stabilization (final mass). The difference between the final and the initial mass determined the solvent capacity of each solvent. Data were subjected to an... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3566983 Fri, 01 Jan 2010 00:00:00 +0100 3566983 http://www.medworm.com/index.php?rid=3566982&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464321%26dopt%3DAbstract This study evaluated in vitro the shear bond strength of a resin-based pit-and-fissure sealant (Fluroshield - F) associated with either an ethanol-based (Adper Single Bond 2 - SB) or an acetone-based (Prime & Bond - PB) adhesive system under conditions of oil contamination. Mesial and distal enamel surfaces from 30 sound third molars were randomly assigned to 2 groups (n=30): I - no oil contamination; II - oil contamination. Contamination (0.25 mL during 10 s) was performed after 37% phosphoric acid etching with an air/oil spray. The specimens were randomly assigned to subgroups, according to the bonding protocol adopted: subgroup A - F was applied to enamel without an intermediate bonding agent layer; In subgroups B and C, SB and PB, respectively, were applied, light-cured, and then F... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3566982 Fri, 01 Jan 2010 00:00:00 +0100 3566982 http://www.medworm.com/index.php?rid=3566981&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464322%26dopt%3DAbstract This study evaluated the surface hardness, impact and flexural strength, flexural modulus and peak load of 2 acrylic resins, one subjected to a long and another subjected to a short polymerization cycle, which were prepared with or without the addition of 2% PTFE. Four groups were formed according to the polymerization cycle and addition or not of PTFE. Forty specimens were prepared for each test (10 per group) with the following dimensions: hardness (30 mm diameter x 5 mm thick), impact strength (50 x 6 x 4 mm) and flexural strength (64 x 10 x 3.3 mm) test. The results of the flexural strength test allowed calculating flexural modulus and peak of load values. All tests were performed in accordance with the ISO 1567:1999 standard. Data were analyzed statistically by ANOVA and Tukey's test ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3566981 Fri, 01 Jan 2010 00:00:00 +0100 3566981 http://www.medworm.com/index.php?rid=3566980&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464323%26dopt%3DAbstract Authors: Ribeiro FV, Nociti Júnior FH, Sallum EA, Sallum AW, Casati MZ This case series evaluated the clinical performance and patient-centered outcomes after a minimally invasive surgical technique (MIST) associated with enamel matrix protein derivative (EMD), for the treatment of intra-bony defects. Twelve patients presenting teeth with probing depth >or=5 mm and bleeding on probing associated with radiographic evidence of intra-bony defect were treated by MIST associated with EMD. Clinical parameters were measured at baseline, 3 and 6 months. Patient perception during the intraoperative period and during the first postoperative week was evaluated. The use of MIST with EMD promoted significant improvements in clinical parameters, minimal pain/discomfort and maximum esthetics sa... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3566980 Fri, 01 Jan 2010 00:00:00 +0100 3566980 http://www.medworm.com/index.php?rid=3566979&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464324%26dopt%3DAbstract Authors: Andrade CR, Takahama Junior A, Nishimoto IN, Kowalski LP, Lopes MA Rhabdomyosarcoma is a malignant tumor occurring more frequently in the childhood. The purpose of this study was to analyze the clinicopathological and immunohistochemical features of rhabdomyosarcomas of the head and neck (RHNs). Twenty nine patients treated in a single institution were selected. The histological slides were reviewed and the tumors were classified. The immunohistochemical reactions were performed using antibodies against vimentin, desmin, myogenin, MyoD1, AE1/AE3, p53, PCNA, Ki67, C-erbB2, FAS and CDK4. The mean age was 14.3 years. The nonparameningeal site was affected in 16 cases (55.2%). Eleven cases (37.9%) affected parameningeal sites and 2 cases the orbit. The p53 was positive in 4 cases ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3566979 Fri, 01 Jan 2010 00:00:00 +0100 3566979 http://www.medworm.com/index.php?rid=3566978&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464325%26dopt%3DAbstract Authors: Brazão-Silva MT, Fernandes AV, Faria PR, Cardoso SV, Loyola AM Ewing's sarcoma (ES) is a malignancy primarily affecting bone tissue that is commonly diagnosed in adolescents and young adults. Its occurrence in the head and neck region is unusual and generally involves the mandible and maxilla. An extensive review of the literature shows only few cases of the oral ES in patients under the age of 5. This paper reports a rare case of ES of the mandible in a 4-year-old girl, which had been previously misdiagnosed and treated as a dental abscess. In the clinical examination, a hard immobile expansive mass of 5 cm in diameter was observed on the left side of the mandible. Radiographic examination revealed a radiolucent lesion with ill-defined borders and wide vestibular bone plat... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3566978 Fri, 01 Jan 2010 00:00:00 +0100 3566978 http://www.medworm.com/index.php?rid=3566977&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464326%26dopt%3DAbstract Authors: Silva ET, Nunes Mde F, Queiroz MG, Leles CR Comprehensive assessment of students' academic performance plays an important role in educational planning. The aim of this study was to investigate variables that influence student's performance in a retrospective sample including all undergraduate students who entered in a Brazilian dental school, in a 20-year period between 1984 and 2003 (n=1182). Demographic and educational variables were used to predict performance in the overall curriculum and course groups. Cluster analysis (K-means algorithm) categorized students into groups of higher, moderate or lower performance. Clusters of overall performance showed external validity, demonstrated by Chi-square test and ANOVA. Lower performance groups had the smallest number of students ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=3566977 Fri, 01 Jan 2010 00:00:00 +0100 3566977 http://www.medworm.com/index.php?rid=2843026&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784460%26dopt%3DAbstract Authors: Rodrigues LV, Vasconcelos AC, Campos PA, Brant JM Pulp samples of 50 healthy human teeth with indication for extraction were examined to evaluate the role of apoptosis in pulp elimination during physiological root resorption. Two groups were formed: a test group (n=30) composed of pulp samples of primary teeth with physiological root resorption and a control group (n=20) composed of pulp samples of permanent maxillary third molars. Morphological evidence of apoptosis as well as in situ detection of cellular DNA fragmentation by TUNEL assay and detection of internucleosomal pattern of fragmentation of the genomic DNA by electrophoresis were observed. The apoptotic index of the primary tooth group was significantly higher than that of the permanent tooth group (51.01 +/- 0.52 ve... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843026 Tue, 29 Sep 2009 22:50:03 +0100 2843026 http://www.medworm.com/index.php?rid=2843025&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784461%26dopt%3DAbstract This study evaluated the radioprotective effect of sodium selenite on the bone repair process in tibiae of female rats. For such purpose, 100 female Wistar rats (Rattus norvegicus, albinus) were randomly assigned to 4 groups (n=25), according to the treatment received: administration of distilled water (control); administration of sodium selenite; gamma radiation; and administration of sodium selenite plus gamma radiation. A bone defect was prepared on both tibiae of all animals. Three days after surgery, the gamma radiation and selenium/gamma radiation groups received 8 Gy gamma rays on the lower limbs. Five animals per group were sacrificed 7, 14, 21, 28 days after surgery for evaluation of the repair process by bone volumetric density analysis. The 5 animals remaining in each group were... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843025 Tue, 29 Sep 2009 22:50:03 +0100 2843025 http://www.medworm.com/index.php?rid=2843024&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784462%26dopt%3DAbstract Authors: Vieira Ede O, Fidel Junior RA, Figueredo CM, Fischer RG The aim of this study was to clinically evaluate the use of alloderm to increase the width of attached gingiva. Nine patients were selected. The inclusion criteria were: attached gingiva smaller than 1 mm; Miller's class I and II gingival recession; patients able to attend control dental appointments; absence of periodontal pocket and endodontic treatment in the neighboring area where the acellular dermal graft would be placed. The clinical evaluation included: allograft shrinkage 7, 14, 21, 30, 60 and 90 days after surgery; width of attached gingiva at the end of the study; difference in color and mobility of allograft. Allograft shrinkage was calculated by comparing its area immediately after surgery to its areas in the... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843024 Tue, 29 Sep 2009 22:50:03 +0100 2843024 http://www.medworm.com/index.php?rid=2843023&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784463%26dopt%3DAbstract In conclusion, chemical components released from SB in aqueous environment were highly toxic to cell culture and thus an inflammatory pulpal response should be considered during the clinical application of dental adhesives. PMID: 19784463 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843023 Tue, 29 Sep 2009 22:50:03 +0100 2843023 http://www.medworm.com/index.php?rid=2843022&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784464%26dopt%3DAbstract In conclusion, fluoride-containing solutions (pH 7.0) used as mouthwashes do not damage the surface of cast CP Ti and can be used by patients with titanium-based restorations. PMID: 19784464 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843022 Tue, 29 Sep 2009 22:50:03 +0100 2843022 http://www.medworm.com/index.php?rid=2843021&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784465%26dopt%3DAbstract Authors: Santana IL, Lodovici E, Matos JR, Medeiros IS, Miyazaki CL, Rodrigues-Filho LE The aim of this study was to verify the influence of an experimental heat treatment (170 masculineC/10 min) using a casting furnace on the mechanical properties (hardness and flexural strength) of 2 commercial direct resin composites (TPH Spectrum and Filtek P60) compared to a commercial indirect resin system (BelleGlass). Heat treatment temperature was determined after thermal characterization by thermogravimetry (TG) and differential scanning calorimetry (DSC). Data was analyzed by ANOVA and Tukey's test at 5% significance level. There was statistical significance for the main factor heat treatment (p=0.03) and composite (p=0.02), for flexural strength. For Knoop hardness, only the main factor com... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843021 Tue, 29 Sep 2009 22:50:03 +0100 2843021 http://www.medworm.com/index.php?rid=2843020&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784466%26dopt%3DAbstract In conclusion, the final irrigation protocols evaluated in this study using the Luer syringe presented similar performance in the removal of debris from the apical third of flattened root canals. PMID: 19784466 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843020 Tue, 29 Sep 2009 22:50:03 +0100 2843020 http://www.medworm.com/index.php?rid=2843019&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784467%26dopt%3DAbstract In conclusion, laser reduced the frequency and severity of OM, suggesting that therapeutic laser can be used both as a new form of prevention and treatment of OM. PMID: 19784467 [PubMed - in process] (Source: Braz Dent J) Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843019 Tue, 29 Sep 2009 22:50:03 +0100 2843019 http://www.medworm.com/index.php?rid=2843018&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784468%26dopt%3DAbstract Authors: Abreu MH, Lopes-Terra MC, Braz LF, Rímulo AL, Paiva SM, Pordeus IA The study compared the attitudes and behavior of 4th-year dental students regarding infection control rules in 1995 and 2005. Self-administrated questionnaires were applied to 592 students at 5 different dental schools in 1995 (n=350) and in 2005 (n=242). The chi-square and Fisher's exact tests were used for statistical analysis of data. Significance level was set at p<0.05. The response rate was 90.3% in 1995 and 81.0% in 2005. There was no improvement in the use of rubber gloves (p=0.316), face masks (p=0.572) or gowns (p=0.862) between 1995 and 2005. There was a lesser frequency of the use of protective eyewear in 2005 (p<0.001). No student used the individual protection equipment correctly. There... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843018 Tue, 29 Sep 2009 22:50:03 +0100 2843018 http://www.medworm.com/index.php?rid=2843017&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784469%26dopt%3DAbstract In this study, the craniomandibular index was applied to valuate signs and symptoms of CMD in 60 dentate patients, who were assigned to 2 groups: symptomatic (n=35) and asymptomatic (n=25). An interview on psychopathologies was carried out with the aim to detect the presence of some mood disorders, such as depression, dysthymic and bipolar I disorders. Among these disturbances, depression was the most significant aspect to be reported (p<0.05) since it was present in most symptomatic patients. This important interaction was also significantly correlated (p<0.05) with the Palpation Index. These results suggest that psychopathological aspects could increase muscle tenderness and pain in addition to sleep dysfuntions and other physical complaints. Therefore, psychopathologies should be ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843017 Tue, 29 Sep 2009 22:50:03 +0100 2843017 http://www.medworm.com/index.php?rid=2843016&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784470%26dopt%3DAbstract Authors: Motta AC, Domaneschi C, Komesu MC, Souza Cda S, Aoki V, Migliari DA The aim of this study was to evaluate the efficacy of a 0.05% clobetasol propionate ointment administered in trays to 22 patients with desquamative gingivitis in a double-blind, crossover, placebo-controlled trial. Patients received container number 1 and were instructed to apply the ointment 3 times a day for 2 weeks, and to reduce the application to once a day in the third week. Next, the patients were then instructed to discontinue the treatment for 2 weeks, and were then given container 2, used in the same way and for the same length of time as container 1. Regarding signs, 17 patients presented some improvement, while 5 experienced worsening with clobetasol propionate. With the placebo, 14 patients presen... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843016 Tue, 29 Sep 2009 22:50:03 +0100 2843016 http://www.medworm.com/index.php?rid=2843015&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784471%26dopt%3DAbstract Authors: Siéssere S, Sousa LG, Lima Nde A, Semprini M, Vasconcelos PB, Watanabe PC, Rancan SV, Regalo SC The purpose of this study was to analyze the electromyographic (EMG) activity and the maximal molar bite force in women diagnosed with osteoporosis in the maxillary and mandibular regions, considering the habits and conditions that lead to development of generalized skeletal bone loss, including on face bones, can disturb the functional harmony of the stomatognathic system. Twenty-seven women with mandibular and maxillary osteoporosis and 27 healthy controls volunteered to participate in the study. A 5-channel electromyographer was used. Muscle activity was evaluated by means of EMG recordings of the masticatory musculature (masseter and temporalis muscles, bilaterally) during ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843015 Tue, 29 Sep 2009 22:50:03 +0100 2843015 http://www.medworm.com/index.php?rid=2843014&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784472%26dopt%3DAbstract Authors: Canger EM, Celenk P, Kayipmaz S Inflammatory fibrous hyperplasia (epulis fissuratum) (IFH) and inflammatory papillary hyperplasia (IPH) are oral mucosal diseases caused by ill-fitting denture wearing. A study was carried out on a group of Turkish people consisted of 131 female and 39 male complete denture wearers (n= 170) distributed in two age groups (30-60 and 60-80 years old). The analysis of data collected from patients showed that while the incidence of IFH was higher in women than in men, the incidence of IPH was similar. Most lesions were found in the 30-60 year-old group. The incidence of lesions increased as the denture wearing period increased. Soft tissue growth was the main complaint of the patients with IFH and IPH. In the maxilla, the incidence of IFH was higher ... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843014 Tue, 29 Sep 2009 22:50:03 +0100 2843014 http://www.medworm.com/index.php?rid=2843013&cid=s_28238_11_f&fid=28238&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19784473%26dopt%3DAbstract Authors: Alemán Navas RM, Martínez Mendoza MG, Herrera H, Herrera HP Hymenoptera order includes bees, which have a stinging apparatus at the tail capable of delivering venom to the affected tissues. Myocardial infarction, acute renal failure, Necrotizing fasciitis, fatal infection and hemifacial asymmetry, are some of the unusual reactions reported following hymenoptera stings. This paper reports a case of bee sting in the right floor of the nose that mimicked an odontogenic infection affecting the upper lip, canine space and nasal cavity such as in cases of infection secondary to pulpal or periodontal pathology of the anterior teeth. After a thorough clinical and radiographic examination, odontogenic infection was discarded and the diagnosis of floor of the nose mucosal lysi... Braz Dent J journals http://www.medworm.com/rss/comments.php?id=2843013 Tue, 29 Sep 2009 22:50:03 +0100 2843013