MedWorm: Dentistry

Global Database Needed To Guarantee Identification Of Victims In Mass Disasters

Dentistry News From Medical News Today — Sat, 20 Mar 2010 07:00:00 +0100

An expert in forensic anthropology argues that the database should include computer records of citizens such as anthropological data, physiognomic characteristics, medical information, radiographic files, dental records and numbers of different identity documents... (Source: Dentistry News From Medical News Today)

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Biological width following immediate implant placement in the dog: flap vs. flapless surgery

Clinical Oral Implants Research — Sat, 20 Mar 2010 00:00:00 +0100

This study was carried out on five Beagle dogs. Four implants were placed in the lower jaw in each dog immediately after tooth extraction. Flap surgery was performed before the extraction on one side (control) and flapless on the other (test). After 3 months of healing, the dogs were sacrificed and prepared for histological analysis. Ten implants were placed in each group. Two failed (one of each group). The length of the junctional epithelium in the flapless group was 2.54 mm (buccal) and 2.11 mm (lingual). In the flap group, the results were very similar: 2.59 mm (buccal) and 2.07 mm (lingual), with no significant differences observed between the groups. The length of the connective tissue in the flapless group was 0.68 mm (buccal) and 0.54 mm (lingual), and 1.09 mm at the buccal and 0.9...

CO2 laser-assisted treatment of a giant pyogenic granuloma of the gingiva

International Journal of Dental Hygiene — Sat, 20 Mar 2010 00:00:00 +0100

Conclusion: This report describes an oral complication during pregnancy for which surgical excision of a PG after delivery seemed the best treatment. It is possible that gender-specific periodontal disease risk factors contributed to the development of the lesion. This is another reason why pregnant women should be encouraged to be assessed by oral health professionals before late pregnancy. (Source: International Journal of Dental Hygiene)

E-Newsletter: June 17, 2009

NIDCR News Releases — Fri, 19 Mar 2010 19:25:28 +0100

(Source: NIDCR News Releases)

A Name Like No Other

NIDCR Science News in Brief — Fri, 19 Mar 2010 14:31:52 +0100

(Source: NIDCR Science News in Brief)

Peri-implant soft tissue and bone crest alterations at fixed dental prostheses: a 3-year prospective study

Clinical Oral Implants Research — Fri, 19 Mar 2010 00:00:00 +0100

The aim of this 3-year prospective study involving patients receiving implant-supported fixed dental prostheses (FDPs) was to longitudinally evaluate soft and hard tissue alterations from the time of implant placement. Sixteen subjects with 18 implant-supported FDPs on 43 implants were included in the study. Peri-implant soft and hard tissue assessments were performed at implant placement, 2, 6, 12, 24 and 36 months. Variables describing the peri-implant soft tissue conditions and topography were assessed by clinical, photographic and study model assessments. Variables of implant position and bone topography were measured in radiographs taken at each examination interval. Multilevel regression models were formulated to identify factors of significance for proximal bone crest alterations an...

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Factors influencing resonance frequency analysis assessed by Osstell™mentor during implant tissue integration: I. Instrument positioning, bone structure, implant length

Clinical Oral Implants Research — Fri, 19 Mar 2010 00:00:00 +0100

To monitor longitudinally the development of implant stability of SLA Straumann® tissue-level implants using resonance frequency analysis (RFA) and to determine the influence of instrument positioning, bone structure and implant length on the assessment of RFA. Thirty-two healthy adult patients received either 8 mm, [empty]4.1 mm Straumann® Standard Plus tissue-level implants (n=16: Group A) or 10 mm, [empty]4.1 mm Straumann® Standard Plus tissue-level implants (n=16: Group B). During healing, RFA was performed on Weeks 0,1, 2, 3, 4, 5, 6, 8 and 12. The implants were restored after 10 weeks (impression taking) and 12 weeks. In addition, probing depth, presence of plaque and bleeding on probing were assessed. Implant stability quotient (ISQ) values of Groups A and B were compared using u...

Resilient liner vs. clip attachment effect on peri-implant tissues of bar-implant-retained mandibular overdenture: a 1-year clinical and radiographical study

Clinical Oral Implants Research — Fri, 19 Mar 2010 00:00:00 +0100

The aim of this study was to compare between the effects of resilient liner and clip attachments of bar-implant-retained mandibular overdenture on peri-implant tissues. In a randomized-controlled clinical trial, 30 edentulous male patients (mean age 62.5 years) were equally assigned to two groups. In each patient, two implants were inserted in the canine area of the mandible using a two-stage surgical protocol. After 3 months, the implants were connected with resilient bars. Mandibular overdentures were retained to the bars with either clips (group I) or silicone-resilient liners (group II). Peri-implant tissues were evaluated clinically (with regard to plaque scores, gingival scores and probing depths) and radiographically (with regard to peri-implant vertical and horizontal alveolar bone...

Relationship between cortical bone thickness or computerized tomography-derived bone density values and implant stability

Clinical Oral Implants Research — Fri, 19 Mar 2010 00:00:00 +0100

To explore the relationship between primary implant stability and different parameters related to implant or bone properties. Twenty-four patients received a total of 136 Straumann SLActive implants. Resonance frequency analysis (RFA) was performed at implant placement, and RFA and Periotest (PTV) were scored at loading. Bone density [Hounsfield (HU) scores] and coronal cortical thickness at osteotomy sites were measured from pre-operative computerized tomography scans. Implant length, diameter or the presence of bony dehiscence did not have a significant effect on the mean RFA scores at implant insertion. Significant linear relations were found between RFA or PTV scores and HU values (P (Source: Clinical Oral Implants Research)

The effect of deproteinized bovine bone on osteoblast growth factors and proinflammatory cytokine production

Clinical Oral Implants Research — Fri, 19 Mar 2010 00:00:00 +0100

To test the ability of Bio-Oss® in inducing growth factors and proinflammatory cytokines that may have a role in inflammation after grafting, bone resorption, remodeling and in the homeostasis of osteoblasts. Normal human osteoblasts were seeded in Petri dishes containing granules of Bio-Oss®, cells were harvested after confluency and RNA was extracted. Reverse transcriptase polymerase chain reaction was performed using specific primers for osteonectin, bone sialoprotein (BSP), bone morphogenetic protein (BMP)-2 and BMP-7, platelet-derived growth factor (PDGF), interleukin 6 (IL-6), tumor necrosis factor [alpha] (TNF-[alpha]) and integrin [beta]1. Glycerol-3-phosphate dehydrogenase was used as the housekeeping gene and normal human osteoblasts grown on Petri dishes without Bio-Oss® gran...

Cement thickness at implant-supported single-tooth Lava assemblies: a scanning electron microscopic investigation

Clinical Oral Implants Research — Fri, 19 Mar 2010 00:00:00 +0100

The fit of implant-supported single-tooth Lava zirconia assemblies was investigated in this study. The implant[ndash]abutment interface, the interface between the metallic and the zirconia portion of the abutment and the interface between Lava abutments and copings were evaluated. The adaptation of titanium abutments to implants and Lava copings was investigated as a control. Twenty implants were randomly assigned and connected to Lava abutments (group 1) or titanium abutments (group 2). All specimens were subjected to scanning electron microscopy (SEM) analysis of the fixture/abutment fit. Afterwards, specimens were luted to Lava copings and subjected to a SEM evaluation of the marginal external adaptation of the abutments with the copings. Finally, the samples were embedded in resin, sec...

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Long-term response of osteogenic cells on micron and submicron-scale-structured hydrophilic titanium surfaces: sequence of cell proliferation and cell differentiation

Clinical Oral Implants Research — Fri, 19 Mar 2010 00:00:00 +0100

Modifications of surface topography and surface chemistry are key factors for guiding target cells during dental implant healing. Recent in vitro studies confirmed promotion of early osteogenic cell differentiation on submicron scaled surfaces in particular when hydrophilized. However, no long-term observations on both osteogenic cell proliferation as well as on cell maturation have been reported for respectively modified surfaces. Aim of this study was to monitor osteogenic cell proliferation and expression of specific osteogenic cell differentiation markers on a protein level over an extended period of 3 weeks with respect to surface modifications. Modified titanium (Ti) disks were obtained from Institute Straumann, representing the following surfaces: smooth pretreatment (PT), sandblast...

Discovery of a patient with strongly suspected bullous pemphigoid in a ward by oral health care providers

International Journal of Dental Hygiene — Fri, 19 Mar 2010 00:00:00 +0100

Discussion: In cases in which oral health care providers suspect their patients may have BP, appropriate examination and provision of information to the doctor are important. Oral health care providers should have knowledge about systemic diseases, the signs of which appear in oral cavity to avoid missing important systemic diseases. (Source: International Journal of Dental Hygiene)

The erosive potential of jawbreakers, a type of hard candy

International Journal of Dental Hygiene — Fri, 19 Mar 2010 00:00:00 +0100

Conclusions: Jawbreakers are frequently used by children, who keep this candy in their mouth for a long time. Jawbreakers differ considerable in erosive potential, with sour and jumbo jawbreakers > strawberry jawbreaker >> fireball jawbreaker. This information is of use for dental hygienists counselling juvenile patients with dental erosion. (Source: International Journal of Dental Hygiene)

Leading US Speakers Confirmed For 2010 British Dental Conference And Exhibition

Dentistry News From Medical News Today — Thu, 18 Mar 2010 18:00:00 +0100

Leading US clinical speakers David Newkirk and William Bo Bruce are to headline the Friday lecture programme at the 2010 British Dental Conference and Exhibition. Both are renowned experts in the field of restorative and aesthetic dentistry and are accredited members of the American Academy of Cosmetic Dentistry... (Source: Dentistry News From Medical News Today)

Double-blind Randomized Clinical Trial of Posterior Composite Restorations with or without Bevel: 6-month Follow-up.

J Contemp Dent Pract — Thu, 18 Mar 2010 05:00:03 +0100

CONCLUSION: Restorations performed were acceptable after six months, but beveled restorations showed less marginal staining than nonbeveled restorations. CLINICAL SIGNIFICANCE: Bevel used in posterior composite restorations decreased the surface and marginal staining, in six-month evaluations. PMID: 20228981 [PubMed - in process] (Source: J Contemp Dent Pract)

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Microleakage evaluation of core buildup composite resins with total-etch and self-etch adhesive systems.

J Contemp Dent Pract — Thu, 18 Mar 2010 05:00:03 +0100

CONCLUSION: Application of adhesive using Core Max II cement and Panavia F2.0 cement is strongly recommended to decrease microleakage. Self-etch adhesive performed better than total-etch adhesive. CLINICAL SIGNIFICANCE: With regards to microleakage, the self-etching primer displayed better sealing than that obtained with the total-etching, two-step dental adhesive. PMID: 20228982 [PubMed - in process] (Source: J Contemp Dent Pract)

Comparative evaluation of ketoconazole tablet and topical ketoconazole 2% in orabase in treatment of Candida-infected denture stomatitis.

J Contemp Dent Pract — Thu, 18 Mar 2010 05:00:03 +0100

CONCLUSION: Topical ketoconazole 2% in orabase can be useful in managing denture stomatitis. This topical medication has fewer side effects, whereas systemic administration of ketoconazole tablet is associated with some complications. CLINICAL SIGNIFICANCE: The application of topical ketoconazole 2% in orabase ointment can be considered in the treatment of denture stomatitis and has comparable efficacy with the ketoconazole tablet. PMID: 20228983 [PubMed - in process] (Source: J Contemp Dent Pract)

A comparative evaluation of biphasic calcium phosphate material and bioglass in the treatment of periodontal osseous defects: a clinical and radiological study.

J Contemp Dent Pract — Thu, 18 Mar 2010 05:00:03 +0100

CONCLUSION: Both test groups showed significant improvement over the control in both the clinical and radiological parameters. CLINICAL SIGNIFICANCE: A greater percentage of defect resolution was noticed in test 1 as compared to test 2, followed by the control. PMID: 20228984 [PubMed - in process] (Source: J Contemp Dent Pract)

Evaluation of periodontal status in subjects with hyperlipidemia.

J Contemp Dent Pract — Thu, 18 Mar 2010 05:00:03 +0100

CONCLUSIONS: The results of our study showed that female patients with hyperlipidemia had higher values of periodontal parameters compared to control individuals. However, in the future studies with larger sample sizes in mixed gender populations are needed to determine the association between hyperlipidemia and periodontal disease. CLINICAL SIGNIFICANCE: The results of our study showed that female patients with hyperlipidemia might manifest clinically higher values of periodontal parameters compared to nonlipdemic individuals. However, due to the small sample size of this study the exact association between hyperlipidemia and periodontal disease is still uncertain. Care has to be taken with a hyperlipidemia patients and advice can be given to them for periodic periodontal checkup. PMI...

Effectiveness of procedures for the chemical-mechanical control of dental biofilm in orthodontic patients.

J Contemp Dent Pract — Thu, 18 Mar 2010 05:00:03 +0100

CONCLUSION: The use of the commercial mouthwash, together with mechanical oral hygiene, orientation, and motivation, proved to be adequate conduct for the maintenance of oral health in orthodontic patients. CLINICAL SIGNIFICANCE: The present study contributes toward the maintenance of oral health in patients who wear a fixed orthodontic appliance through the prevention of dental biofilm buildup. PMID: 20228986 [PubMed - in process] (Source: J Contemp Dent Pract)

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Public awareness level of oral cancer in a group of dental patients.

J Contemp Dent Pract — Thu, 18 Mar 2010 05:00:03 +0100

CONCLUSION: This study showed that public awareness and knowledge about oral cancer were insufficient in Turkey. CLINICAL SIGNIFICANCE: There is an important need to inform the public about oral cancer, its risk factors, and early signs of the disease. Media campaigns can be useful to raise oral cancer awareness. PMID: 20228987 [PubMed - in process] (Source: J Contemp Dent Pract)

Gingival enlargement in neurofibromatosis type 1: a case report and literature review.

J Contemp Dent Pract — Thu, 18 Mar 2010 05:00:03 +0100

Authors: Mahajan A, Dixit J, Bhardwaj A AIM: The purpose of this article is to describe a rare case of neurofibromatosis1 (NF1) of the gingiva and a review of the current literature. BACKGROUND: Neurofibromatosis1 (NF1) of the gingiva is an uncommon cause of gingival enlargement. The disease is clinically characterized by epidermal melanosis, nevi, and flabby skin or bone malformations; in addition, the lesions may undergo malignant transformation. Involvement of the gingiva with or without concurrent skin lesions has been reported only occasionally. CASE DESCRIPTION: A 40-year-old male patient with a history of NF1 came to us with a chief complaint of enlargement of the gums. Clinical examination revealed diffuse gingival enlargement with no signs of inflammation. The characteristic s...

Porcelain fused to metal crown as an abutment of a metal-ceramic resin-bonded fixed partial denture: a clinical report.

J Contemp Dent Pract — Thu, 18 Mar 2010 05:00:03 +0100

Authors: Ghavamnasiri M, Maleknejad F, Modabber M AIM: This clinical report describes a conventional resin-based fixed partial denture for a 42-year-old woman to close an edentulous space in the region of the second maxillary premolar. While the first maxillary molar had been crowned with porcelain fused to metal (PFM) system 10 years ago and the first premolar was intact and sound except for a small carious lesion in the distal aspect. The essential clinical and laboratory procedures are illustrated. BACKGROUND: Multiple clinical studies document excellent long-term success of resin-bonded fixed partial dentures. In the 1970s, the Rochette resin-bonded fixed partial denture (RBFPD) was introduced. Next, to enhance retention and resistance form of posterior RBFPD preparation of paralle...

Non-syndromic Oligodontia in Permanent Dentition of Monozygotic Twins: Report of a Rare Case.

J Contemp Dent Pract — Thu, 18 Mar 2010 05:00:03 +0100

This article describes a case of non-syndromic oligodontia involving 26 permanent teeth in monozygotic twin sisters. The twins had positive family history of hypodontia in their paternal grandmother, parental consanguinity (first cousin) and similarity in pattern of oligodontia. Root formation of permanent maxillary first molars and central incisors was delayed in both the twins. SUMMARY: This article reports a case of non-syndromic oligodontia in permanent dentition of monozygotic twins. Possible genetic etiology, inheritance pattern and associated dental anomalies are discussed. CLINICAL SIGNIFICANCE: Strong genetic link associated with oligodontia help the dentist to know the possibility of its occurrence in other family members and in future generations. PMID: 20228990 [PubMed - in...

Endodontic treatment of a mandibular second premolar with three root canals.

J Contemp Dent Pract — Thu, 18 Mar 2010 05:00:03 +0100

Authors: Aguiar C, Mendes D, Câmara A, Figueiredo J AIM: The purpose of this case report is to describe a nonsurgical endodontic treatment of a mandibular left second premolar with two separate roots and three distinct root canals. BACKGROUND: In endodontics, the possible existence of extra canals must be considered before endodontic treatment is instituted. A wide morphological variation of the root canal system is known to exist. CASE DESCRIPTION: A 36-year-old male patient was referred for endodontic treatment on the left mandibular second premolar. Radiographic examination of the involved tooth revealed an unusual, complex root canal anatomy. There was an irregular root morphology consisting of two distinct roots and three canals. SUMMARY: This case report describes the succes...

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Gingival abscess due to an unusual nail-biting habit: a case report.

J Contemp Dent Pract — Thu, 18 Mar 2010 05:00:03 +0100

This report describes a case of gingival abscess in a child due to a fingernail-biting habit. CASE DESCRIPTION: A 5-year, 6-month-old female presented gingival swelling and fistula in the primary maxillary left central and right lateral incisors as an unusual sequelae to the periodontal tissues from fingernail-biting. A periodontal curette was used to remove the fragments and to curette the area. After the curettage, an exudate of blood and pus was drained. Then the area was irrigated with 0.12% chlorhexidine solution; applying finger pressure controlled the secretion. After one week, the patient returned with gingival swelling present in the same teeth. The same curettage procedure was performed. It was suggested that the deleterious habit was related to emotional tension and anxiety beha...

AAOMP CASE CHALLENGE: Yellow Papule on the Ventral Tongue.

J Contemp Dent Pract — Thu, 18 Mar 2010 05:00:03 +0100

Authors: Chu C, Aguirre A, Hatton M CASE SUMMARY: A 71-year old Caucasian male presented to the Dental Clinic at the University at Buffalo's School of Dental Medicine, New York, USA, for routine dental care. Upon oral examination, an asymptomatic yellow papule with a broad base and superficial vasculature was seen in the left ventral side of the tongue. The lesion demonstrated a soft consistency upon palpation. The overlying lingual mucosa was unremarkable. The patient was not aware of the presence of this lesion. PMID: 20228993 [PubMed - in process] (Source: J Contemp Dent Pract)

Zimmer Institute Video

Dental Implants Discussed by Experts — Wed, 17 Mar 2010 16:42:02 +0100

The Zimmer Institute promotes the very best in patient care by providing practitioners with an exceptional pathway for lifelong learning. >>Read More and Comment (Source: Dental Implants Discussed by Experts)

All-on-4 Mandible - A Clinical Case

Dental Implants Discussed by Experts — Wed, 17 Mar 2010 13:33:51 +0100

This video presents an open (flapped approach) All-on-4 mandibular surgery as well as the immediate prosthesis delivery (3-4 hours following the surgery). >>Read More and Comment (Source: Dental Implants Discussed by Experts)

The incidence of canine transmigration and tooth impaction in a Turkish subpopulation.

European Journal of Orthodontics — Wed, 17 Mar 2010 00:00:00 +0100

Authors: Aktan AM, Kara S, Akgünlü F, Malkoç S The purpose of this study was to determine the incidence of transmigrated maxillary and mandibular canine teeth and also of the other impacted teeth in a Turkish subpopulation. Five thousand consecutive panoramic radiographs taken of patients who attended the Department of Oral Diagnosis and Radiology, Selcuk University, for routine examination between 2005 and 2007 were examined to identify incidences of transmigrated and impacted teeth. Demographic information of all patients was also recorded. Transmigrations were categorized according to the classification of Mupparapu. The effect of age, gender, and sidedness (left or right side) on the recorded abnormality was evaluated using a t-test. The incidence of transmigrated up...

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2008 Survey of Pro Bono Services Provided by Practicing Prosthodontists

Journal of Prosthodontics — Wed, 17 Mar 2010 00:00:00 +0100

Conclusion: Based on this survey, practicing prosthodontists compare favorably to dental generalists and other specialists in terms of the annual dollar value donated in pro bono care. Their treatment addresses a broad scope of prosthodontic services including the restoration of patients with complex needs. (Source: Journal of Prosthodontics)

BIOLASE Announces FDA 510(K) Clearance Of ILase TM Personal Laser For Dental Market

Dentistry News From Medical News Today — Tue, 16 Mar 2010 22:00:00 +0100

BIOLASE Technology, Inc. (NASDAQ: BLTI), the world's leading dental laser company, today announced that it has received 510(k) clearance from the U.S. Food and Drug Administration (FDA) to market its iLase™ diode laser, the world's first personal laser for dentists and hygienists for performing a full-range of minimally invasive soft-tissue and hygiene procedures... (Source: Dentistry News From Medical News Today)

The Formula For Making Teeth Will Soon Be Found

Dentistry News From Medical News Today — Tue, 16 Mar 2010 08:00:00 +0100

Each cusp of our teeth is regulated by genes which carefully control the development. A similar genetic puzzle also regulates the differentiation of our other organs and of all living organisms. A team of researchers at the Institute of Biotechnology of the University of Helsinki has developed a computer model reproducing population-level variation in complex structures like teeth and organs... (Source: Dentistry News From Medical News Today)

The dental workforce in Kentucky: current status and future needs

Journal of Public Health Dentistry — Tue, 16 Mar 2010 00:00:00 +0100

Conclusions: These results show present and widening workforce disparities in rural and socioeconomically depressed counties in Kentucky. Understanding the geographic distribution of dentists and the socioeconomic correlates of their practice locations may inform workforce development and reimbursement policies for the goal of improving access to oral health care in these areas. (Source: Journal of Public Health Dentistry)

Laser-Welded Hollow Pontic Full-Gold Fixed Dental Prosthesis

Journal of Prosthodontics — Tue, 16 Mar 2010 00:00:00 +0100

This article describes a technique for the fabrication of a laser-welded hollow pontic full-gold fixed dental prosthesis. Reference to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the U.S. Government. The opinions of the authors expressed herein do not necessarily state or reflect those of the U.S. Government, and shall not be used for advertising or product endorsement purposes. (Source: Journal of Prosthodontics)

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Patients' and dentists' perception of dental appearance

Clinical Oral Investigations — Mon, 15 Mar 2010 17:56:05 +0100

Abstract The purpose of this study was to compare the patients' and dentists' perception of dental appearance. Based on internationally accepted guidelines about dental esthetics, a questionnaire was developed to measure “dental appearance” (QDA). Eleven items defined a QDA sum score (0 = “absolutely satisfied”, 44 = “absolutely dissatisfied”). The QDA was completed by 16 patients (eight women, eight men, mean age 63 ± 9 years) before and after a complete oral rehabilitation. Forty-two dentists evaluated the esthetics before and after rehabilitation on a visual analog scale (VAS, 0 = “absolutely unesthetic”, 100 = “absolutely esthetic”). The patients' quoting showed a significant esthetic improvement (QDA sum score) from 22 befo...

Microsatellite GT polymorphism in intron 2 of human Toll-like receptor (TLR) 2 gene and susceptibility to periodontitis

Clinical Oral Investigations — Mon, 15 Mar 2010 17:56:05 +0100

Abstract As pattern recognition receptor, Toll-like receptor (TLR) 2 is a signal molecule essential for the cellular response to Porphyromonas gingivalis. A recently described guanine-thymine (GT) repeat microsatellite polymorphism of the human TLR2 gene leads to impaired promotor activity. A total of 380 patients with chronic periodontitis and 590 unrelated healthy control individuals of Caucasian descent were genotyped for the GT repeat microsatellite polymorphism of the TLR2 gene. The mutations were identified with polymerase chain reaction followed by sizing of GT repeat length. The number of GT repeats ranged from 13 to 29 in both study groups. There was no significant difference between periodontitis patients and healthy controls regarding the frequency of GT repeats ...

Microstructure analysis of dental castings used in fixed dental prostheses—a simple method for quality control

Clinical Oral Investigations — Mon, 15 Mar 2010 17:56:04 +0100

Abstract The aim of this study was to evaluate the microstructural quality of noble alloy castings from commercial dental laboratories using the wiping–etching method as a simple method for quality control. In total, 240 castings from two noble alloys (AuAgCuPt and AuPtZn) were taken from a day's production of five different dental laboratories. The casting quality was evaluated by determining the grain size and by assessing the number and size of shrinkage cavities after acidic etching of the alloy surfaces. The AuAgCuPt alloy castings showed an acceptable quality in the microstructural analysis. The results of AuPtZn castings, however, were not satisfactory because 50.8% of the samples showed a remarkably poorer quality compared to the specifications made by the manufa...

Dental Implants in the Palate?

Dental Implants Discussed by Experts — Mon, 15 Mar 2010 17:01:06 +0100

I was wondering if we could place implants in the palate, maybe along the midpalatal suture and use these for retention, like maxillofacial prostheses. >>Read More and Comment (Source: Dental Implants Discussed by Experts)

Bone has Resorbed on the Buccal Cortical Plate: What Should I Do Now?

Dental Implants Discussed by Experts — Mon, 15 Mar 2010 17:00:12 +0100

After 1 year, the bone has resorbed on the buccal cortical plate and there is only a thin gingival layer of tissue over the labial aspect of the implant fixture. >>Read More and Comment (Source: Dental Implants Discussed by Experts)

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Problems with Procelain Fractures on Implant Crowns and Bridges: Use Ultrasonic Unit?

Dental Implants Discussed by Experts — Mon, 15 Mar 2010 16:57:58 +0100

I have had some problems with porcelain fracture on my implant crowns and bridges. I try to tap off the crown or bridge with a Morrel Crown Remover with gentle tapping. >>Read More and Comment (Source: Dental Implants Discussed by Experts)

Chronic Polypoid Sinusitis: Can I Do a Sinus Lift?

Dental Implants Discussed by Experts — Mon, 15 Mar 2010 16:56:27 +0100

I have a patient who requires a sinus lift and implants in the maxillary alveolar ridge. One complication is that the patient has chronic polypoid sinusitis. >>Read More and Comment (Source: Dental Implants Discussed by Experts)

Molar distalization with a pendulum appliance K-loop combination.

European Journal of Orthodontics — Mon, 15 Mar 2010 00:00:00 +0100

Authors: Acar AG, Gürsoy S, Dinçer M The aim of this study was to evaluate the dentoalveolar effects of a pendulum appliance supported buccally by a K-loop, and to compare these with a cervical headgear (CHG) group. The records of 30 patients with skeletal Class I and dental Class II malocclusions were divided in to two groups: Patients in group 1 (seven females and eight males; mean age, 15.0 +/- 3.4 years) were treated with a pendulum appliance supported with a K-loop buccally, while in group 2 (10 females and 5 males; mean age, 14.2 +/- 2.9 years), the patients were treated with CHG. Standardized lateral cephalograms and study models were taken at the beginning of treatment (T0) and at the end of distal molar movement (T1). T0-T1 changes within the groups were analysed wit...

Preservation of Existing Soft-Tissue Contours in the Transition from a Tooth to an Implant Restoration in the Esthetic Zone Using a Flapless Approach: A Clinical Report

Journal of Prosthodontics — Mon, 15 Mar 2010 00:00:00 +0100

This article presents a clinical case with a single anterior tooth replacement, illustrating ridge preservation with healing, delayed implant placement with immediate provisionalization of the implant to support the soft tissue, and a method of recording the soft-tissue contour in the final impression to achieve an optimal esthetic result. (Source: Journal of Prosthodontics)

Influence of Cusp Inclination on Stress Distribution in Implant-Supported Prostheses. A Three-Dimensional Finite Element Analysis

Journal of Prosthodontics — Mon, 15 Mar 2010 00:00:00 +0100

Conclusion: Stresses on the implant and implant/abutment interface increased with increasing cusp inclination, and stresses on the cortical bone decreased with increasing cusp inclination. (Source: Journal of Prosthodontics)

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Influence of Microwave Disinfection on the Dimensional Stability of Denture Reline Polymers

Journal of Prosthodontics — Mon, 15 Mar 2010 00:00:00 +0100

Conclusions: Microwave disinfection promoted shrinkage of Kooliner and New Truliner. The dimensional stability of Tokuyama Rebase II, Ufi Gel Hard, and Lucitone 550 was not affected by microwave disinfection. (Source: Journal of Prosthodontics)

Effects of Accelerated Artificial Daylight Aging on Bending Strength and Bonding of Glass Fibers in Fiber-Embedded Maxillofacial Silicone Prostheses

Journal of Prosthodontics — Mon, 15 Mar 2010 00:00:00 +0100

Conclusions: After 200 hours of exposure to artificial daylight and moisture conditions, bond strength between glass fibers and heat-cured silicones is optimal, and the bending strength of the glass fiber bundles is enhanced. (Source: Journal of Prosthodontics)

Pilots Require Time And Evaluation, Says BDA

Dentistry News From Medical News Today — Sun, 14 Mar 2010 08:00:00 +0100

The British Dental Association (BDA) has reaffirmed its support for the piloting of the reforms in Professor Steele's review of dentistry, following today's announcement that at least 30 dental practices have been selected to trial new ways of improving services for patients... (Source: Dentistry News From Medical News Today)

Salaried Dentists Echo Disappointment Of GDPs At Pay Award - British Dental Association

Dentistry News From Medical News Today — Sun, 14 Mar 2010 08:00:00 +0100

Leaders of dentists working in salaried primary care, hospitals and academia have echoed the disappointment already expressed by colleagues in general practice at the pay award announced for 2010/11. Salaried primary care dentists in England will be given just a one per cent pay increase for next year... (Source: Dentistry News From Medical News Today)

Effect of systemic parathyroid hormone (1-34) and a beta-tricalcium phosphate biomaterial on local bone formation in a critical-size rat calvarial defect model.

Journal of Clinical Periodontology — Sun, 14 Mar 2010 00:00:00 +0100

Conclusions: Systemic administration of PTH significantly stimulates local bone formation. Bone formation was significantly limited by the beta-TCP biomaterial. PMID: 20236187 [PubMed - as supplied by publisher] (Source: Journal of Clinical Periodontology)

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Oral health status of adults in Southern Vietnam - a cross-sectional epidemiological study

BMC Oral Health - Latest articles — Sat, 13 Mar 2010 00:00:00 +0100

Conclusions: The majority of adults of Southern Vietnam presented a reduced dentition. The combination of low numbers of filled teeth and relative high numbers of decayed and missing teeth indicates that the main treatment for decay is extraction. Molars are more at risk for being decayed or missing than premolars and anterior teeth. (Source: BMC Oral Health - Latest articles)

One-Year Outcomes of Neoss Bimodal Implants. A Prospective Clinical, Radiographic, and RFA Study

Clinical Implant Dentistry and Related Research — Sat, 13 Mar 2010 00:00:00 +0100

Conclusions: The use of Neoss implants for prosthetic rehabilitation of consecutive edentate patients with different needs resulted in predictable clinical and radiographic outcomes after 1 year of loading. Implant stability measurements revealed a favorable bone tissue reaction to the implants. (Source: Clinical Implant Dentistry and Related Research)

The efficacy of direct tissue fluorescence visualization in screening for oral premalignant lesions in general practice: an update

International Journal of Dental Hygiene — Sat, 13 Mar 2010 00:00:00 +0100

Conclusions: There is insufficient evidence to demonstrate that its use as an adjunct to conventional oral screening provides additional benefit to conventional oral cancer screening alone. (Source: International Journal of Dental Hygiene)

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NIDCR Science News in Brief — Fri, 12 Mar 2010 17:05:05 +0100

(Source: NIDCR Science News in Brief)

First European consensus workshop in periodontal education – objectives and overall recommendation

European Journal of Dental Education — Fri, 12 Mar 2010 14:04:52 +0100

(Source: European Journal of Dental Education)

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Award Fails To Recognise Challenges We Face Say Scottish Dentists

Dentistry News From Medical News Today — Fri, 12 Mar 2010 12:00:00 +0100

Dr Robert Kinloch, Chair of the Scottish Dental Practice Committee, has branded the announcement of a 0.9 per cent increase to item of service fees for independent contractor dentists in Scotland as a major disappointment that fails to recognise the significant challenges dentists are trying to overcome. The Doctors' and Dentists' Review Body recommended a 1... (Source: Dentistry News From Medical News Today)

Effects of Pilot Hole Size and Bone Density on Miniscrew Implants' Stability

Clinical Implant Dentistry and Related Research — Fri, 12 Mar 2010 00:00:00 +0100

Conclusion: Depending on bone density, pilot holes of limited size can be used to optimize primary stability by decreasing insertion torque while maintaining the pullout strength of bone. (Source: Clinical Implant Dentistry and Related Research)

Oral health-related quality of life among adults 68–77 years old in Nord-Trøndelag, Norway

International Journal of Dental Hygiene — Fri, 12 Mar 2010 00:00:00 +0100

To cite this article:Int J Dent HygieneDOI: 10.1111/j.1601-5037.2010.00445.x.Dahl KE, Wang NJ, Holst D, Öhrn K. Oral health-related quality of life among adults 68[ndash]77 years old in Nord-Trøndelag, Norway. Dental health has mostly been measured by dental staff disregarding patient's experiences. However, clinical conditions alone do not fully indicate how people feel affected by their oral status. The aim of this study was to investigate how clinical recorded dental health, self-rated dental health, satisfaction with dental health were related to oral health-related quality of life (OHRQoL) assessed by Oral Health Impact Profile (OHIP-14) in 68[ndash]77 years old. A total of 151 individuals completed a questionnaire on self-rated dental health, satisfaction with dental health and the...

Do elderly edentulous patients with a history of periodontitis harbor periodontal pathogens?

Clinical Oral Implants Research — Fri, 12 Mar 2010 00:00:00 +0100

The presence of periodontal pathogens in the oral cavity may impact implant survival. Therefore, this study aimed to determine the prevalence of Campylobacter rectus, Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, Prevotella intermedia, Tannerella forsythia, Treponema denticola, Eikenella corrodens and Parvimonas micra in a specific elderly population with a history of periodontitis who have never worn dentures. Thirty dentate subjects (mean age 61.7±7.05 years) and 30 edentulous subjects (mean age 65.8±8.05 years) were included in this cross-sectional study. Microbiological samples of cheek mucosa and the dorsum of the tongue were taken from all subjects. In addition, sulcus samples were taken from the dentate group. All samples were analysed using a bacterial DNA-spec...

Oral health-related quality of life in hospitalised stroke patients

Gerodontology — Fri, 12 Mar 2010 00:00:00 +0100

Conclusion: The OHRQoL is significantly reduced in hospitalised stroke patients whereby functional impairment seems predominant when compared with psychological and psycho-social aspects. (Source: Gerodontology)

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Innovative educational methods and technologies applicable to continuing professional development in periodontology

European Journal of Dental Education — Fri, 12 Mar 2010 00:00:00 +0100

Continuous professional development (CPD) in Periodontology refers to the overall framework of opportunities that facilitate a life-long learning practice, driven by the learner-practitioner and supported by a variety of institutions and individuals. CPD must address different needs for a great diversity of practitioners. It is clear that no particular methodology or technology is able to successfully accommodate the entire spectrum of CPD in Periodontology. Course designers must choose from and combine a wide array of methodologies and technologies, depending upon the needs of the learners and the objectives of the intended education. Research suggests that 'interactivity', 'flexibility', 'continuity' and 'relevance to learners' practice' are major characteristics of successful CPD. Vario...

Conclusions and consensus statements on: Innovative educational methods and technologies applicable to continuing professional development in periodontology – consensus view 4

European Journal of Dental Education — Fri, 12 Mar 2010 00:00:00 +0100

(Source: European Journal of Dental Education)

Postgraduate periodontal education. Scope, competences, proficiencies and learning outcomes: Consensus report of the 1st European workshop on periodontal education – position paper 3 and consensus view 3

European Journal of Dental Education — Fri, 12 Mar 2010 00:00:00 +0100

(Source: European Journal of Dental Education)

Scope, competences, learning outcomes and methods of periodontal education within the undergraduate dental curriculum: A Consensus report of the 1st European workshop on periodontal education – position paper 2 and consensus view 2

European Journal of Dental Education — Fri, 12 Mar 2010 00:00:00 +0100

The explosion in new knowledge in the last three decades has imposed important challenges in the training of all health workers, including dentists. These breakthroughs do not rapidly permeate educational cirricula. This is particularly relevant in Periodontology, because of recent breakthroughs in diagnostics and therapeutic approaches and by the advent of new knowledge on the implications of periodontal and peri-implant infections on systemic health and on ageing populations. Periodontology as one of the major oral health sciences requires a broad understanding of a spectrum of healthcare and basic sciences, together with specific education. In preparation for graduation, students must demonstrate a variety of acquired learning out-comes, which, in turn demand variety in learning and tea...

Periodontal health in Europe: future trends based on treatment needs and the provision of periodontal services – position paper 1

European Journal of Dental Education — Fri, 12 Mar 2010 00:00:00 +0100

This review gives an update on recent epidemiologic data on periodontal diseases and a description of current periodontal services in Europe. A Medline search of articles published within the last decade with the keywords epidemiology, prevalence, periodontitis, tooth loss, and Europe was performed. Data on provision of dental services originated from international databases. Epidemiologic data on the prevalence of edentulism, the number of missing teeth, the prevalence of probing depth (Community Periodontal Index [ndash] CPI [ge] 3 or Pocket Depth [ndash] PD [ge] 4 mm), and clinical attachment loss (CAL [ge] 4 mm) displayed a fragmentary picture within Europe. With respect to the limited data on periodontal health, Spain, Sweden, and Switzerland ranked as the healthiest among European co...

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Conclusions and consensus statements on periodontal health, policy and education in Europe: a call for action – consensus view 1

European Journal of Dental Education — Fri, 12 Mar 2010 00:00:00 +0100

(Source: European Journal of Dental Education)

NHS Dental Charges In Wales Frozen Again

Dentistry News From Medical News Today — Thu, 11 Mar 2010 17:00:00 +0100

Dental patient charges in Wales have been frozen for the fourth year running to help maintain wider access to NHS dentistry, Health Minister Edwina Hart announced today [Thursday, 11 March]... (Source: Dentistry News From Medical News Today)

Clinical Dental Report, England and Wales: Quarter 3 and Quarter 4, 2008/09 – Experimental Statistics

The IC : Dentistry — Thu, 11 Mar 2010 14:06:51 +0100

SummaryThis final, experimental, report for 2008/09 shows NHS clinical dental activity in England and Wales at the national level for the third and fo... (Source: The IC : Dentistry)

Pay Freeze Will Undermine Confidence In NHS Dentistry, Says GDPC Chair

Dentistry News From Medical News Today — Thu, 11 Mar 2010 10:00:00 +0100

The confidence of general dental practitioners will be undermined by today's announcement of a 0.9 per cent uplift on contract values and a requirement to make efficiency savings in order to offset increases in expenses. That's the verdict of Dr John Milne, Chair of the British Dental Association's General Dental Practice Committee, on what is effectively a freeze on dentists' pay... (Source: Dentistry News From Medical News Today)

Dentists Ask For Review Of Decontamination In Practices In Scotland

Dentistry News From Medical News Today — Thu, 11 Mar 2010 10:00:00 +0100

The British Dental Association (BDA) has written to the Scottish Intercollegiate Guidelines Network (SIGN) to request the development of a guideline on dental instrument decontamination... (Source: Dentistry News From Medical News Today)

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British Dental Association Disappointed At 2010-11 Funding Award

Dentistry News From Medical News Today — Thu, 11 Mar 2010 10:00:00 +0100

The British Dental Association (BDA) has expressed disappointment at today's announcement of the pay uplift for dentists for 2010/11. The Department of Health has announced that salaried dentists have been awarded a one per cent increase, while general dental practitioners have been awarded an increase that, after efficiency savings have been taken account of, is designed to produce a 0... (Source: Dentistry News From Medical News Today)

2010 Max Planck Research Award For NYU Dental Professor Dr. Timothy Bromage

Dentistry News From Medical News Today — Thu, 11 Mar 2010 08:00:00 +0100

New York University College of Dentistry's Dr. Timothy Bromage has been selected to receive the 2010 Max Planck Research Award. Dr. Bromage will collaborate with Dr... (Source: Dentistry News From Medical News Today)

Diagnostic performance of the universal visual scoring system (UniViSS) on occlusal surfaces

Clinical Oral Investigations — Thu, 11 Mar 2010 02:41:39 +0100

In conclusion, this study on the diagnostic performance of UniViSS showed encouraging results and give valuable hints for future studies. Content Type Journal ArticleCategory Original ArticleDOI 10.1007/s00784-010-0390-1Authors Jan Kühnisch, Ludwig-Maximilians-University of Munich Department of Conservative Dentistry and Periodontology Munich GermanyKatharina Bücher, Ludwig-Maximilians-University of Munich Department of Conservative Dentistry and Periodontology Munich GermanyVolkmar Henschel, Ludwig-Maximilians-University of Munich Institute of Medical Informatics, Biometry and Epidemiology Munich GermanyAngela Albrecht, Ludwig-Maximilians-University of Munich Department of Conservative Dentistry and Periodontology Munich GermanyFranklin Garcia-Godoy, University of Tennessee Heal...

Folke Lagerlöf 1939-2010.

Acta Odontologica Scandinavica — Thu, 11 Mar 2010 00:00:00 +0100

Folke Lagerlöf 1939-2010. Acta Odontol Scand. 2010 Mar 11; Authors: Holbrook P, Meurman JH PMID: 20222758 [PubMed - as supplied by publisher] (Source: Acta Odontologica Scandinavica)

Ten-year results of a three-arm prospective cohort study on implants in periodontally compromised patients. Part 1: implant loss and radiographic bone loss

Clinical Oral Implants Research — Thu, 11 Mar 2010 00:00:00 +0100

The aim of this study was to compare the long-term outcomes of implants placed in patients treated for periodontitis periodontally compromised patients (PCP) and in periodontally healthy patients (PHP) in relation to adhesion to supportive periodontal therapy (SPT). One hundred and twelve partially edentulous patients were consecutively enrolled in private specialist practice and divided into three groups according to their initial periodontal condition: PHP, moderate PCP and severe PCP. Perio and implant treatment was carried out as needed. Solid screws (S), hollow screws (HS) and hollow cylinders (HC) were installed to support fixed prostheses, after successful completion of initial periodontal therapy (full-mouth plaque score (Source: Clinical Oral Implants Research)

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Collagen barrier membranes decrease osteoclastogenesis in murine bone marrow cultures

Clinical Oral Implants Research — Thu, 11 Mar 2010 00:00:00 +0100

Collagen barrier membranes (CBM) are used for guided bone regeneration to support the process of graft consolidation. It remains, unknown however, whether CBM can affect the consolidation of bone grafts by controlling the differentiation of progenitor cells into bone-resorbing osteoclasts and bone-forming osteoblasts. To gain an insight into the underlying mechanisms, we performed in vitro bone marrow cultures on CBM (Bio-Gide®) under conditions that favor osteoclastogenesis and osteoblastogenesis, respectively. Measures of osteoclastogenesis were based on the number of tartrate-resistant acid-phosphatase-positive (TRAP+) multinucleated cells. Resorption assays revealed the activity of mature osteoclasts. Osteoblastogenesis was determined by alkaline-phosphatase activity. Viability was in...

Osteotome sinus floor elevation with or without grafting: a preliminary clinical trial

Clinical Oral Implants Research — Thu, 11 Mar 2010 00:00:00 +0100

This clinical trial aimed (1) to evaluate the predictability of the osteotome sinus floor elevation (OSFE) technique, (2) to study the influence of simultaneous grafting on the clinical success of placing dental implants in the posterior maxilla using OSFE and (3) to observe the bone changes in the elevated space with OSFE without grafting. Two hundred and eighty Straumann® implants were placed in the posterior maxillae of 202 patients using OSFE. One hundred and ninety-one implants were placed in 125 patients without grafting. The implants were allowed to heal for 3[ndash]4 months for non-grafted implants and for 6[ndash]8 months for grafted cases. For radiographic analyses, periapical and panoramic radiographs were taken of 30 implants at 3 and 9 months to assess the bone changes for th...

Primary stability measurements of single implants in the midline of the edentulous mandible for overdentures

Clinical Oral Implants Research — Thu, 11 Mar 2010 00:00:00 +0100

To determine the primary stability of the Southern wide diameter (8 mm) implants, Neoss regular diameter (4 mm) implants, and Southern regular diameter (3.75 mm) implants placed in the midline of edentulous mandibles for single-implant overdentures. Variables related to host site and implant characteristics were investigated to determine their influence on the primary stability of the implants. A total of 36 implants were placed in the midline symphysis of the edentulous mandibles of 36 participants. Their primary stability was then measured using the magnetic Osstell mentor device. Analysis of variance (ANOVA) was used to compare the mean implant stability quotient (ISQ) scores with one-way ANOVA for multiple comparisons. The highest measurement (ISQ) of primary stability was for the Sout...

Clinical and histomorphometric evaluation of extraction sockets treated with an autologous bone marrow graft

Clinical Oral Implants Research — Thu, 11 Mar 2010 00:00:00 +0100

The aim of this study was to evaluate the potential of an autologous bone marrow graft in preserving the alveolar ridges following tooth extraction. Thirteen patients requiring extractions of 30 upper anterior teeth were enrolled in this study. They were randomized into two groups: seven patients with 15 teeth to be extracted in the test group and six patients with 15 teeth to be extracted in the control group. Hematologists collected 5 ml of bone marrow from the iliac crest of the patients in the test group immediately before the extractions. Following tooth extraction and elevation of a buccal full-thickness flap, titanium screws were positioned throughout the buccal to the lingual plate and were used as reference points for measurement purposes. The sockets were grafted with an autologo...

Medication in elderly people: its influence on salivary pattern, signs and symptoms of dry mouth

Gerodontology — Thu, 11 Mar 2010 00:00:00 +0100

Conclusion: The use of medication increases the chance that an elderly person may present signs related to xerostomia and alterations in stimulated saliva flow and buffering capacity. (Source: Gerodontology)

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Oral implants in dependent elderly persons: blessing or burden?

Gerodontology — Thu, 11 Mar 2010 00:00:00 +0100

Conclusion: Dependent elderly people can benefit from oral implants, providing that adequate oral health care and aftercare can be provided. When indicated, removal of the anchorage structure is easily performed by putting the implants to sleep. All implant patients should be provided with an 'implant passport'. Regular information and instruction for care providers about the oral condition of the patient are essential. (Source: Gerodontology)

Diagnostic delay may be associated with advanced-stage oro-pharyngeal cancer

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

(Source: European Journal of Oral Sciences)

Diagnostic delay is not associated with advanced-stage oro-pharyngeal cancer

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

(Source: European Journal of Oral Sciences)

Thermal/mechanical simulation and laboratory fatigue testing of an alternative yttria tetragonal zirconia polycrystal core-veneer all-ceramic layered crown design

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

This study evaluated the stress levels at the core layer and the veneer layer of zirconia crowns (comprising an alternative core design vs. a standard core design) under mechanical/thermal simulation, and subjected simulated models to laboratory mouth-motion fatigue. The dimensions of a mandibular first molar were imported into computer-aided design (CAD) software and a tooth preparation was modeled. A crown was designed using the space between the original tooth and the prepared tooth. The alternative core presented an additional lingual shoulder that lowered the veneer bulk of the cusps. Finite element analyses evaluated the residual maximum principal stresses fields at the core and veneer of both designs under loading and when cooled from 900°C to 25°C. Crowns were fabricated and mout...

Flexural strength of glass fibre-reinforced posts bonded to dual-cure composite resin cements

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

Davis P, Melo LSD, Foxton RM, Sherriff M, Pilecki P, Mannocci F, Watson TF. Flexural strength of glass fibre-reinforced posts bonded to dual-cure composite resin cements. Eur J Oral Sci 2010; 118: 197[ndash]201. © 2010 The Authors. Journal compilation © 2010 Eur J Oral Sci The aims of this study were to evaluate the flexural strength of two different types of glass fibre-reinforced posts bonded to dual-cure composite resin cements. Forty glass methacrylate-based fibre posts (GC Fiber Post) and 20 glass fibre inter-polymerizing network posts (everStick POST) were divided into three groups. Group 1 contained 20 GC posts that were bonded to a dual-cure composite cement (UnifilCore). Group 2 contained 20 Stick Tech posts that had adhesive applied (Scotchbond Multipurpose resin) and were bond...

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Enamel microhardness and bond strengths of self-etching primer adhesives

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

Adebayo OA, Burrow MF, Tyas MJ, Adams GG, Collins ML. Enamel microhardness and bond strengths of self-etching primer adhesives. Eur J Oral Sci 2010; 118: 191[ndash]196. © 2010 The Authors. Journal compilation © 2010 Eur J Oral Sci The aim of this study was to determine the relationship between enamel surface microhardness and microshear bond strength ([mu]SBS). Buccal and lingual mid-coronal enamel sections were prepared from 22 permanent human molars and divided into two groups, each comprising the buccal and lingual enamel from 11 teeth, to analyze two self-etching primer adhesives (Clearfil SE Bond and Tokuyama Bond Force). One-half of each enamel surface was tested using the Vickers hardness test with 10 indentations at 1 N and a 15-s dwell time. A hybrid resin composite was bonded t...

Altered inorganic composition of dental enamel and dentin in primary teeth from girls with Turner syndrome

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

Rizell S, Kjellberg H, Dietz W, Norén JG, Lundgren T. Altered inorganic composition of dental enamel and dentin in primary teeth from girls with Turner syndrome. Eur J Oral Sci 2010; 118: 183[ndash]190. © 2010 The Authors. Journal compilation © 2010 Eur J Oral Sci In Turner syndrome (TS) one X-chromosome is missing or defective. The amelogenin gene, located on the X-chromosome, plays a key role during the formation of dental enamel. The aim of this study was to find support for the hypothesis that impaired expression of the X-chromosome influences mineral incorporation during amelogenesis and, indirectly, during dentinogenesis. Primary tooth enamel and dentin from girls with TS were analysed and compared with the enamel and dentin of primary teeth from healthy girls. Qualitative and qua...

Energy transfer, volumetric expansion, and removal of oral biofilms by non-contact brushing

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

Busscher HJ, Jager D, Finger G, Schaefer N, van der Mei HC. Energy transfer, volumetric expansion, and removal of oral biofilms by non-contact brushing. Eur J Oral Sci 2010; 118: 177[ndash]182. © 2010 The Authors. Journal compilation © 2010 Eur J Oral Sci Non-contact removal of oral biofilms offers advantages beyond the reach of bristles, but it is unknown how energy transfer for removal from brush-to-biofilm occurs. In the present study we evaluated non-contact, oral biofilm removal by oscillating-rotating and sonic toothbrushes, and their acoustic output up to 6 mm distance. Whereas some brushes removed biofilm when used at a distance of up to 6 mm, others lost efficacy at a distance of 2[ndash]4 mm from the biofilm. Loss of efficacy was accompanied with high standard deviations and vo...

Induction of invasion in an organotypic oral cancer model by CoCl2, a hypoxia mimetic

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

Brusevold IJ, Husvik C, Schreurs O, Schenck K, Bryne M, Søland TM. Induction of invasion in an organotypic oral cancer model by CoCl2, a hypoxia mimetic. Eur J Oral Sci 2010; 118: 168[ndash]176. © 2010 The Authors. Journal compilation © 2010 Eur J Oral Sci Invasion is a hallmark of malignancy. The aim of this study was to develop an in vitro model that can be used for experimental studies of cancer cell invasion. The organotypic oral cancer model was constructed by growing oral squamous cell carcinoma (OSCC) cells on a collagen matrix in which normal human fibroblasts were incorporated. Immunohistochemical staining of the model showed that the expression of invasion-related molecules such as phosphorylated extracellular signal-regulated kinases 1 and 2 (p-ERK1/2), cyclooxygenase-2 (COX-...

Expression of the T-cell-specific adapter protein in oral epithelium

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

This study is the first to show that TSAd is expressed in normal oral mucosa, that it is important for the normal ultrastructural morphology of the epithelium and the basal membrane, and that it is involved in the migration and proliferation of oral keratinocytes. (Source: European Journal of Oral Sciences)

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Applying an excessive mechanical stress alters the effect of subchondral osteoblasts on chondrocytes in a co-culture system

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

Lin Y-Y, Tanaka N, Ohkuma S, Iwabuchi Y, Tanne Y, Kamiya T, Kunimatsu R, Huang Y-C, Yoshioka M, Mitsuyoshi T, Tanimoto K, Tanaka E, Tanne K. Applying an excessive mechanical stress alters the effect of subchondral osteoblasts on chondrocytes in a co-culture system. Eur J Oral Sci 2010; 118: 151[ndash]158. © 2010 The Authors. Journal compilation © 2010 Eur J Oral Sci Osteoarthritis (OA) sometimes occurs as a consequence of repeated microtrauma involved in parafunction, which may lead to microfracture in the subchondral bone. The aim of this in vitro study was to evaluate the effects of subchondral osteoblasts in loading with repeated excessive mechanical stress on the metabolism of overlying chondrocytes. A high-magnitude cyclic tensile stress of 15 kPa (30 cycles min[minus]1) was applied...

Anti-inflammatory effect of catechin on cultured human dental pulp cells affected by bacteria-derived factors

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

In this study, we investigated the effect of epigallocatechin-3-gallate (EGCG) and epicatechin gallate (ECG), the major components of green tea catechins, on the expression of pro-inflammatory cytokines and adhesion molecules in human dental pulp cells stimulated with bacteria-derived factors such as lipopolysaccharide (LPS) and peptidoglycan (PG). The expression of interleukin (IL)-6 and of IL-8 was examined using the reverse transcription[ndash]polymerase chain reaction and enzyme-linked immunosorbent assays. The expression of intercellular adhesion molecule-1 (ICAM-1) and of vascular cell adhesion molecule-1 (VCAM-1) on dental pulp cells was analyzed using flow cytometry. The presence of EGCG and ECG significantly reduced, in a concentration-dependent manner, the expression of IL-6 and ...

Down-regulation of hypoxia inducible factor-1α: a possible explanation for the protective effects of estrogen on genioglossus fatigue resistance

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

We examined the effects of estrogen on the contractility of the genioglossus by exposing rats to alternating cycles of 6[ndash]8% O2 every 15 s for a total duration of 35 d. The results showed that muscle fatigue resistance was significantly decreased after CIH but was partially reversed after estrogen treatment. Compared with the control group, real-time reverse transcription[ndash]polymerase chain reaction and western blotting showed higher levels of HIF-1[alpha] messenger RNA and protein in the CIH group, but estrogen treatment reduced, in a dose-independent manner, the levels of HIF-1[alpha] messenger RNA and protein in rats exposed to CIH. We conclude that CIH induced the expression of HIF-1[alpha] in the genioglossus and altered the physical properties towards a more fatigable phenot...

Cholinergic autoantibodies from primary Sjögren's syndrome modulate submandibular gland Na+/K+-ATPase activity via prostaglandin E2 and cyclic AMP

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

Passafaro D, Reina S, Sterin-Borda L, Borda E. Cholinergic autoantibodies from primary Sjögren's syndrome modulate submandibular gland Na+/K+-ATPaseactivity via prostaglandin E2and cyclic AMP. Eur J Oral Sci 2010; 118: 131[ndash]138. © 2010 The Authors. Journal compilation © 2010 Eur J Oral Sci We demonstrate that patients with primary Sjögren's syndrome (pSS) produce functional IgG autoantibodies that interact with the glandular M3 muscarinic acetylcholine receptors (mAChRs). These autoantibodies act as a partial muscarinic agonist, increasing prostaglandin E2 (PGE2) and cyclic AMP production through modifying Na+/K+-ATPase activity, but also interfere with the secretory effect of the parasympathetic neurotransmitter. The IgG from patients with pSS has two effects on the submandibular...

Gene expression and dental enamel structure in developing mouse incisor

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

Sehic A, Risnes S, Khan Q-E-S, Khuu C, Osmundsen H. Gene expression and dental enamel structure in developing mouse incisor. Eur J Oral Sci 2010; 118: 118[ndash]130. © 2010 The Authors. Journal compilation © 2010 Eur J Oral Sci At the mouse incisor tip the initially differentiated ameloblasts produce a thin, prism-free enamel, while further apically, in the immediate adjacent segment, the enamel thickness increases and the four-layered enamel of mouse incisor is formed. Comparative gene-expression profiling was carried out on RNA isolated from these two segments of incisor tooth germs at embryonic day (E)17.5 and at postnatal days (P)0, 1, 2, and 10 using microarrays to measure messenger RNA (mRNA) and microRNA (miRNA) species present in the segments. Validation of expression data was ac...

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Absence of lymphatic vessels in human dental pulp: a morphological study

European Journal of Oral Sciences — Thu, 11 Mar 2010 00:00:00 +0100

Gerli R, Secciani I, Sozio F, Rossi A, Weber E, Lorenzini G. Absence of lymphatic vessels in human dental pulp: a morphological study. Eur J Oral Sci 2010; 118: 110[ndash]117. © 2010 The Authors. Journal compilation © 2010 Eur J Oral Sci Few and controversial data are available in the literature regarding the presence of lymphatic vessels in the human dental pulp. The present study was designed to examine morphologically the existence of a lymph drainage system in human dental pulp. Human dental pulp and skin sections were immunohistochemically stained with specific antibodies for lymphatic endothelium (D2-40, LYVE-1, VEGFR-3 [vascular endothelial growth factor receptor-3], and Prox-1), with the pan-endothelial markers CD31 and von Willebrand factor (vWF), and with the blood-specific mar...

The diffusion kinetics of a nanofilled and a midifilled resin composite immersed in distilled water, artificial saliva, and lactic acid

Clinical Oral Investigations — Wed, 10 Mar 2010 18:32:37 +0100

This study investigated the diffusion kinetics of a nanofilled (Filtek Z350) and a midifill (Filtek P60) resin composite immersed in distilled water, artificial saliva and lactic acid. Resin composite specimens were desiccated, immersed in the media, weighed at suitable time intervals until they reached sorption equilibrium and were then desiccated again. Sorption and solubility (µg/mm3) were calculated based on ISO 4049:2000(E). The diffusion coefficient (m2.s−1) was determined according to Flick’s second law. The degree of conversion (DC%) was evaluated by FT-IR and the action of the media on the surfaces of the resin composite was evaluated by SEM. Z350 immersed in lactic acid presented the highest sorption (25.9 ± 1.3). The highest solubility was presented by Z350 immers...

Surface characterization of passive film and elemental release analysis of a Ni–Cr alloy during bleaching, part I: effects of different bleaching agents

Clinical Oral Investigations — Wed, 10 Mar 2010 18:32:36 +0100

Abstract The aim of this study was to evaluate the elemental release from a Ni–Cr dental casting alloy subjected to 10% hydrogen peroxide (HP) or 10% carbamide peroxide (CP) solutions and to determine the composition of surface oxide layer formed on alloy samples. Cylinder-shaped 15 specimens were cast from a Ni–Cr alloy and divided into three groups (n = 5). Samples were exposed either to phosphate-buffer solution, HP, or CP for 30 days, and total mass and individual elements (Ni, Cr, Mo) released into solutions were measured by means of atomic absorption spectrometry. Before and after elemental release measurements, a scanning electron microscope (SEM) accompanied by energy dispersive spectroscopy (EDS) (SEM/EDS) was used to analyze the surface morphology, an...

A 38-year review of oral schwannomas and neurofibromas in a Brazilian population: clinical, histopathological and immunohistochemical study

Clinical Oral Investigations — Wed, 10 Mar 2010 18:32:35 +0100

Abstract The benign peripheral nerve sheath tumours are rare lesions mainly represented by schwannoma and neurofibroma. The present work evaluated the clinical and histopathological features of schwannomas and neurofibromas of the oral cavity diagnosed in a Brazilian population. Among 9.000 cases of oral lesions archived from 1970 to 2008, four schwannomas and 12 neurofibromas were identified, microscopically revised and immunohistochemically certified through a panel including monoclonal antibodies (anti-S100, vimentin, HHF-35 and desmin). From biopsy and histological sections records, clinical and histopathological data were retrieved, reviewed and statistically analysed. Predominantly, schwannomas affected non-white males (3:1), with an age and size averages of 34.7&nbs...

Pathophysiology of TMD pain – basic mechanisms and their implications for pharmacotherapy

Journal of Oral Rehabilitation — Wed, 10 Mar 2010 00:00:00 +0100

This article discusses the pathophysiology of temporomandibular disorders (TMD)-related pain and its treatment with analgesic drugs. Temporomandibular disorders are comprised of a group of conditions that result in temporomandibular joint pain (arthralgia, arthritis) and/or masticatory muscle pain (myofascial TMD). In at least some patients with TMD, a peripheral mechanism contributes to this pain. However, there is often a poor correlation between the severity of TMD-related pain complaints and evidence of definitive tissue pathology. This has led to the concept that pain in some patients with TMD may result from altered central nervous system pain processing and further that this altered pain processing may be attributable to specific genes that are heritable. Psychosocial stressors are ...

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Topical iodine and fluoride varnish combined is more effective than fluoride varnish alone for protecting erupting first permanent molars: a retrospective cohort study

Journal of Public Health Dentistry — Wed, 10 Mar 2010 00:00:00 +0100

Conclusions: This evaluation of an ongoing dental public health program adds evidence that topical antiseptics applied at the same time as fluoride varnish are more effective than varnish alone. Randomized trials are needed. (Source: Journal of Public Health Dentistry)

Measuring conceptual health knowledge in the context of oral health literacy: preliminary results

Journal of Public Health Dentistry — Wed, 10 Mar 2010 00:00:00 +0100

Conclusions: This preliminary study yielded a new measure of oral health conceptual knowledge, available for use in future oral health literacy studies. The author presents a conceptual framework of oral health literacy that separates health literacy into four unique components and places decision-making at the center. Future studies are needed to determine whether this framework is supported by empirical data and leads to improvements in oral health and reductions in health disparities. (Source: Journal of Public Health Dentistry)

Doctor, my tooth hurts: the costs of incomplete dental care in the emergency room

Journal of Public Health Dentistry — Wed, 10 Mar 2010 00:00:00 +0100

Conclusions: Access to preventive and restorative dental care is a critical public health problem in the United States, particularly for those without insurance and those covered by public programs. Public health policy initiatives such as the use of dental therapists should be expanded to improve access and to provide alternatives that offer more complete and less costly care for oral health problems than do hospital ERs. (Source: Journal of Public Health Dentistry)

The mandible advancement may alter the coordination between breathing and the non-nutritive swallowing reflex

Journal of Oral Rehabilitation — Wed, 10 Mar 2010 00:00:00 +0100

We examined the effect of mandible advancement associated with mouth opening on the coordination between nasal breathing and non-nutritive swallowing induced by continuous infusion of distilled water into the pharyngeal cavity. The combination of mandible advancement and mouth opening increased the duration of swallowing apnoea and submental electromyographic burst duration. When the mandible was advanced with the mouth open, the duration of swallowing apnoea increased significantly compared with the centric position (0·79 ± 0·23 vs. 0·64 ± 0·12 s, P < 0·05, n = 12), and the duration of submental electromyographic activity increased significantly (2·11 ± 0·63 vs. 1·46 ± 0·25 s, P < 0·05, n = 12). Mandible advancement with mouth opening altered the respiratory phase resetting ...

A clinical follow-up study of the periodontal conditions of RPD abutment and non-abutment teeth

Journal of Oral Rehabilitation — Wed, 10 Mar 2010 00:00:00 +0100

This study indicated that direct and indirect retainer elements tend to undergo more damaging periodontal effects associated with RPD wearing when compared with non-abutment elements. Plaque index values were significantly higher after 1 year of denture use. (Source: Journal of Oral Rehabilitation)

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Activity patterns of the suprahyoid muscles during swallowing of different fluid volumes

Journal of Oral Rehabilitation — Wed, 10 Mar 2010 00:00:00 +0100

Summary Influences of bolus volumes on activity patterns of the suprahyoid muscles during swallowing were examined using the TP technique (which quantitatively evaluates muscle activity patterns and indicates a negatively skewed pattern at lower TP values) in healthy young adults (eight men and four women). One of six volumes of tea ranging from 10 to 32 mL was delivered randomly to each subject while recording an electromyogram of the suprahyoid muscles and a laryngeal mechanogram with a piezoelectric sensor. Each subject was asked to swallow the full volume of liquid in a gulp if possible. TP values were calculated as deciles from T0 to T100 during intervals that were defined by the trajectory of the laryngeal mechanogram recorded during swallowing. Seven significant differences were det...

A study of labial groove-textures of upper central incisors by Shadow Moiré technology

Journal of Oral Rehabilitation — Wed, 10 Mar 2010 00:00:00 +0100

Summary The labial groove-textures of upper central incisors were defined and explored to imitate the elaborate groove-textures for aesthetic restorations. In the current study, 158 upper central incisors were selected from 79 volunteers aged from 19 to 24 and recruited from Sichuan University in Chengdu of China. The length, width, depth, combination and distribution of the horizontal and vertical grooves on the labial surface were investigated by an optical measurement method, based on the Shadow Moiré technology and Temporal Fourier analysis. Vertical grooves were confirmed to be present in 94% of the samples and horizontal grooves in 77%. Perfect symmetry was shown in the vertical grooves of the same tooth, as well as in the homonymous teeth. The majority of horizontal grooves were di...

Video: Sinu-Lift System

Dental Implants Discussed by Experts — Tue, 09 Mar 2010 20:23:58 +0100

This video demonstrates the new Sinu-LiftTM System, from Innovative Implant Technology (IIT). >>Read More and Comment (Source: Dental Implants Discussed by Experts)

Dr Avijit Banerjee Confirmed For 2010 British Dental Conference And Exhibition

Dentistry News From Medical News Today — Tue, 09 Mar 2010 19:00:00 +0100

The BDA is proud to announce that the respected clinical expert Dr Avijit Banerjee has been confirmed to join the prestigious panel of speakers appearing at the 2010 British Dental Conference and Exhibition, to be held on the 20 - 22 May 2010 at the Liverpool Arena and Convention Centre (ACC)... (Source: Dentistry News From Medical News Today)

British Dental Conference And Exhibition 2010

Dentistry News From Medical News Today — Tue, 09 Mar 2010 18:00:00 +0100

Tickets are now available for the BDA's British Dental Conference and Exhibition, which takes place at Liverpool's Arena and Convention Centre (ACC) from 20-22 May 2010. The conference features a wide selection of both clinical and motivational speakers who are guaranteed to inspire delegates with new ideas... (Source: Dentistry News From Medical News Today)

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Mini Implants: Q&A with Dr. Paul M. Mullasseril

Dental Implants Discussed by Experts — Tue, 09 Mar 2010 15:58:13 +0100

Dr. Paul M. Mullasseril answers your questions on Mini Dental Implants. >>Read More and Comment (Source: Dental Implants Discussed by Experts)

Editorial Board

Journal of Dentistry — Tue, 09 Mar 2010 14:06:53 +0100

(Source: Journal of Dentistry)

A comparative evaluation of metallurgical properties of stainless steel and TMA archwires with timolium and titanium niobium archwires - An

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Tue, 09 Mar 2010 14:06:28 +0100

Conclusion: Timolium possesses comparatively low stiffness, better strength and behaves as an intermediate between stainless steel and TMA and hence can be tried for almost all clinical situations. Low springback and high formability of titanium-niobium archwire allows creation of finishing bends and thus it can be used as finishing archwire. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

Effects of platelet-rich plasma on healing of alveolar socket: Split-mouth histological and histometric evaluation in

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Tue, 09 Mar 2010 14:06:28 +0100

Conclusions: It was possible to conclude that bone repair was enhanced by the use of platelet- rich plasma in alveolar sockets. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

A comparative study of inter-abutment distance of dies made from full arch dual-arch impression trays with those made from full arch stock trays: An

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Tue, 09 Mar 2010 14:06:28 +0100

Conclusion: The metal dual-arch trays showed better accuracy followed by the plastic dual-arch and stock dentulous trays, respectively, though statistically insignificant. The pouring sequence did not have any effect on the inter-abutment distance statistically, though pouring the non-working side of the dual-arch impression first showed better accuracy. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

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Correlation of "

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Tue, 09 Mar 2010 14:06:28 +0100

Conclusions: A remarkable increase in capillary density was showed by videocapillaroscopic exam. The increased value of the density could be associated with angiogenesis mechanism and it could be an indicator of the evolutionary condition of LLP. Videocapillaroscopy may be useful for the evaluation of the evolution or regression of the disease. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

Hypohidrotic ectodermal dysplasia - Diagnostic aids and a report of 5 cases

Journal of Indian Society of Pedodontics and Preventive Dentistry — Tue, 09 Mar 2010 14:06:24 +0100

We present a case report of 5 cases of HED with their intraoral findings and their treatment plan. We also consider the various etiological factors and their clinical diagnostic aids. (Source: Journal of Indian Society of Pedodontics and Preventive Dentistry)

Foreign body in a deciduous incisor: A radiological revelation

Journal of Indian Society of Pedodontics and Preventive Dentistry — Tue, 09 Mar 2010 14:06:24 +0100

Lehl GJournal of Indian Society of Pedodontics and Preventive Dentistry 2010 28(1):45-46A 6-year-old boy was brought to the dental department with a history of toothache in the anterior maxillary region. Intraoral examination revealed caries in the deciduous upper central and lateral incisor teeth. Radiological evaluation revealed the silhouette of a metallic paper clip in the pulp chamber of the deciduous right maxillary central incisor. The tooth was extracted as the permanent incisor was erupting below. Children often avoid informing their parents regarding such incidents due to fear of punishment. (Source: Journal of Indian Society of Pedodontics and Preventive Dentistry)

Rehabilitation of severely mutilated teeth under general anesthesia in an emotionally immature child

Journal of Indian Society of Pedodontics and Preventive Dentistry — Tue, 09 Mar 2010 14:06:24 +0100

Navit S, Katiyar A, Samadi F, Jaiswal J NJournal of Indian Society of Pedodontics and Preventive Dentistry 2010 28(1):42-44Dental caries is the single most common chronic childhood disease. In rampant caries, there is early pulp involvement and gross destruction of the maxillary anterior teeth as well as posterior teeth. This leads to decreased masticatory efficiency, difficulty in speech, compromised esthetics, development of abnormal tongue habits and subsequent malocclusion and psychological problems. The restoration of severely decayed primary incisors is often a procedure that presents a special challenge to dentists, particularly in an uncooperative child. This case report documents the restoration of severely mutilated deciduous teeth in an emotionally immature patient under general...

Management of an impacted and transposed maxillary canine

Journal of Indian Society of Pedodontics and Preventive Dentistry — Tue, 09 Mar 2010 14:06:24 +0100

Deepti A, Rayen R, Jeevarathan J, Muthu M S, Rathna Prabhu VJournal of Indian Society of Pedodontics and Preventive Dentistry 2010 28(1):38-41Maxillary canine-lateral incisor transposition is a relatively rare anomaly, with both dental and facial esthetic implications. This is a case report of a maxillary canine-lateral incisor transposition that was successfully treated by surgical-orthodontic treatment followed by esthetic reshaping of the involved teeth. (Source: Journal of Indian Society of Pedodontics and Preventive Dentistry)

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Treatment of crown dilaceration: An interdisciplinary approach

Journal of Indian Society of Pedodontics and Preventive Dentistry — Tue, 09 Mar 2010 14:06:24 +0100

Subramaniam P, Naidu PJournal of Indian Society of Pedodontics and Preventive Dentistry 2010 28(1):34-37Trauma to primary teeth can result in a wide range of disturbances to the underlying permanent teeth, such as dilaceration. Root dilacerations occur more commonly than crown dilacerations. This paper is a report of an 11-year-old girl with a missing maxillary left anterior tooth. Past history revealed premature loss of primary maxillary anterior teeth due to trauma. Radiographic examination revealed crown dilaceration of permanent maxillary left central incisor. An interdisciplinary approach in the management of this child is presented herewith. (Source: Journal of Indian Society of Pedodontics and Preventive Dentistry)

Treatment effects produced by preorthodontic trainer appliance in patients with class II division I malocclusion

Journal of Indian Society of Pedodontics and Preventive Dentistry — Tue, 09 Mar 2010 14:06:24 +0100

This study comprised of 50 class II div. I patients (20 test patients and 30 controls) in the age group of 8-12 years. The test group was treated with a preorthodontic trainer for a period of 15 months. Standardized lateral cephalograms of both groups were taken before and after the treatment period. The cephalograms were then evaluated to determine the skeletal and dental changes in the course of treatment and then compared with the normative growth data to eliminate the possible growth effects. The readings were tabulated and subjected to statistical analysis. The results of the study after excluding the changes due to growth showed reduction in ANB and OP-SN values, indicating a significant reduction in the skeletal class II relationship. An upward cant of the occlusal plane in the trea...

Clinical and radiographic evaluation of pulpectomies using three root canal filling materials: An

Journal of Indian Society of Pedodontics and Preventive Dentistry — Tue, 09 Mar 2010 14:06:24 +0100

Ramar K, Mungara JJournal of Indian Society of Pedodontics and Preventive Dentistry 2010 28(1):25-29Various root canal filling materials are used to preserve a pulpally involved carious primary tooth. But there is no single material so far available to fulfill all the requirements of an ideal root canal filling material for a primary tooth. Hence this study was undertaken to evaluate clinically and radiographically the efficacy of three obturating materials - Calcium hydroxide with Iodoform (METAPEX), Zinc Oxide Eugenol with Iodoform (RC FILL) and Zinc Oxide Eugenol and Calcium hydroxide with Iodoform (ENDOFLAS) for a period of 9 months. Results show ENDOFLAS gave an overall success rate of 95.1%, METAPEX - 90.5% and RC FILL - 84.7%. In our study, we conclude that ENDO...

Comparison of antibacterial efficacy of intracanal medicaments in multiple visit pulpectomies in primary molars-an

Journal of Indian Society of Pedodontics and Preventive Dentistry — Tue, 09 Mar 2010 14:06:24 +0100

Lele G S, Subba Reddy V VJournal of Indian Society of Pedodontics and Preventive Dentistry 2010 28(1):18-24Antibacterial efficacy of formocresol, 2% gluteraldehyde and iodine-potassium iodide was assessed by obtaining cultures at consecutive appointments in multiple visit pulpectomies in primary molars. Formocresol and 2% gluteraldehyde were more effective as intracanal medicaments and caused significant reduction in the counts of aerobic and anaerobic microorganisms, thereby supporting the need for placing intracanal medicaments with antibacterial properties, in multiple visit pulpectomies in primary molars. (Source: Journal of Indian Society of Pedodontics and Preventive Dentistry)

Dental aesthetic index: Applicability in Indian population: A retrospective study

Journal of Indian Society of Pedodontics and Preventive Dentistry — Tue, 09 Mar 2010 14:06:24 +0100

This study shows that DAI can be effectively used to evaluate and recognize the orthodontic needs of Indian children with permanent dentition and treated at an early stage so that the treatment is more effective. (Source: Journal of Indian Society of Pedodontics and Preventive Dentistry)

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Biodegradation of nickel and chromium from space maintainers: An

Journal of Indian Society of Pedodontics and Preventive Dentistry — Tue, 09 Mar 2010 14:06:24 +0100

Bhaskar V, Subba Reddy V VJournal of Indian Society of Pedodontics and Preventive Dentistry 2010 28(1):6-12Band materials are often used in the practice of pediatric dentistry. Nickel and Chromium are the main ingredients of these materials. The potential health hazards of nickel and chromium and their compounds have been the focus of attention for more than 100 years. It has established that these metals could cause hypersensitivity. The study was undertaken to analyze in vitro biodegradation of space maintainers made out of stainless steel band materials from manufacturers Dentaurum and Unitek. The leaching effect simulating the use of one, two, three, and four space maintainers in clinical practice was studied by keeping the respective number of space maintainers in the artificial saliv...

Comparison of the effectiveness of sterilizing endodontic files by 4 different methods: An

Journal of Indian Society of Pedodontics and Preventive Dentistry — Tue, 09 Mar 2010 14:06:24 +0100

Venkatasubramanian R, Jayanthi, Das U M, Bhatnagar SJournal of Indian Society of Pedodontics and Preventive Dentistry 2010 28(1):2-5Sterilization is the best method to counter the threats of microorganisms. The purpose of sterilization in the field of health care is to prevent the spread of infectious diseases. In dentistry, it primarily relates to processing reusable instruments to prevent cross-infection. The aim of this study was to investigate the efficacy of 4 methods of sterilizing endodontic instruments: Autoclaving, carbon dioxide laser sterilization, chemical sterilization (with glutaraldehyde) and glass-bead sterilization. The endodontic file was sterilized by 4 different methods after contaminating it with bacillus stearothermophillus and then checked for sterility by incubating...

Warm greetings from Davangere

Journal of Indian Society of Pedodontics and Preventive Dentistry — Tue, 09 Mar 2010 14:06:24 +0100

Subba Reddy V VJournal of Indian Society of Pedodontics and Preventive Dentistry 2010 28(1):1-1 (Source: Journal of Indian Society of Pedodontics and Preventive Dentistry)

Dental Implants in Younger Patients: Any Studies or Experience?

Dental Implants Discussed by Experts — Tue, 09 Mar 2010 13:18:09 +0100

I'm looking for information about dental implants in children, adolescents and young adults. >>Read More and Comment (Source: Dental Implants Discussed by Experts)

New Government Faces Major Challenges On Dentistry Says BDA Manifesto, UK

Dentistry News From Medical News Today — Tue, 09 Mar 2010 09:00:00 +0100

A flawed dental contract, an unacceptable and growing chasm in oral health inequalities, and inconsistent commissioning of dentistry by primary care trusts. That's the legacy the government elected this year will inherit, according to the British Dental Association's (BDA's) manifesto for the forthcoming General Election, Smiles all round, which is published today... (Source: Dentistry News From Medical News Today)

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A novel molecule, SLURP-1, enhances the survival of periodontal ligament fibroblasts

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: These findings suggest that SLURP-1 may play an important role in the control and maintenance of the periodontal ligament by protecting the periodontal ligament fibroblasts from apoptosis. (Source: Journal of Periodontal Research)

Periodontitis-specific molecular signatures in gingival crevicular fluid

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: We have established that mid-infrared spectroscopy can be used to identify periodontitis-specific molecular signatures in gingival crevicular fluid and to confirm clinical diagnoses. Future longitudinal studies will assess whether mid-infrared spectroscopy represents a potential prognostic tool, recognized as key to advancement of periodontics. (Source: Journal of Periodontal Research)

Periodontal inflammation and bone loss in aged mice

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: Mice develop naturally induced periodontal bone loss as a function of age. This aging model of periodontitis represents a genuinely chronic model to study mechanisms of periodontal tissue destruction. (Source: Journal of Periodontal Research)

Major surface protein complex of Treponema denticola induces the production of tumor necrosis factor α, interleukin-1β, interleukin-6 and matrix metalloproteinase 9 by primary human peripheral blood monocytes

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: These results indicate that T. denticola MSPc, at concentrations ranging from 100 ng/mL to 1.0 [mu]g/mL, activates a proinflammatory response in primary human monocytes. (Source: Journal of Periodontal Research)

Heme oxygenase-1 protects human periodontal ligament cells against substance P-induced RANKL expression

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: These results suggest that SP stimulates osteoclastic differentiation by increasing the expression of RANKL vs. OPG via the HO-1 pathway in periodontal ligament cells. The HO-1 pathway may be an effective therapeutic target for inhibiting chronic periodontitis involving alveolar bone resorption. (Source: Journal of Periodontal Research)

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In vitro engineering of complete autologous oral mucosa equivalents: characterization of a novel scaffold

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusions: It is possible to engineer a CAOME with an epithelium of basal-like and immature keratinocytes, which could potentially reconstruct in vivo loss of tissue. (Source: Journal of Periodontal Research)

Porphyromonas gingivalis stimulates the release of nitric oxide by inducing expression of inducible nitric oxide synthases and inhibiting endothelial nitric oxide synthases

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: Our study provides evidence that P. gingivalis ATCC 33277 can invade HUVECs, and the ability of P. gingivalis ATCC 33277 to promote the production of NO may be important in endothelial dysfunction, suggesting that P. gingivalis ATCC 33277may be one of the pathogens responsible for atherosclerosis. (Source: Journal of Periodontal Research)

Profiling of subgingival plaque biofilm microflora from periodontally healthy subjects and from subjects with periodontitis using quantitative real-time PCR

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: Obligate anaerobes, including T. forthysia, P. gingivalis and E. saphenum, were identified predominantly in microflora from subjects with periodontitis, whereas Streptococcus species were identified predominantly in microflora from periodontally healthy subjects, suggesting a change in the subgingival environment that resulted in conditions more suitable for the survival of obligate anaerobes. The proportion of these obligate anaerobes in the subgingival plaque of subjects with periodontitis appears to be associated with the status of human periodontitis. (Source: Journal of Periodontal Research)

The del/del genotype of the nuclear factor-κB -94ATTG polymorphism and its relation to aggressive periodontitis

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusions: The del/del genotype of NF-[kappa]B was shown to be associated with the occurrence of aggressive periodontitis. (Source: Journal of Periodontal Research)

Significance of elevated gingival crevicular fluid tumor necrosis factor-α and interleukin-8 levels in chronic hemodialysis patients with periodontal disease

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: The levels of TNF-[alpha] and IL-8 in gingival crevicular fluid were significantly higher in HD patients than in controls. There were strong, positive correlations between clinical periodontal parameters and the levels of inflammatory cytokines in gingival crevicular fluid from the HD patients. (Source: Journal of Periodontal Research)

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Effects of areca nut extract on the apoptosis pathways in human neutrophils

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: Areca nut may regulate death pathways in neutrophils. This may be one mechanism by which areca nut compromises the periodontal health of areca nut chewers. (Source: Journal of Periodontal Research)

Effects of epidermal growth factor and/or nerve growth factor on Malassez's epithelial rest cells in vitro: expression of mRNA for osteopontin, bone morphogenetic protein 2 and vascular endothelial growth factor

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: EGF and NGF play important roles in maintaining the PDL. (Source: Journal of Periodontal Research)

Flutamide inhibits nifedipine- and interleukin-1β-induced collagen overproduction in gingival fibroblasts

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: The data suggest that both nifedipine and interleukin-1[beta] play an important role in DIGO via androgen receptor upregulation and that gingival overgrowth is mainly due to collagen accumulation. Flutamide decreases the gene expression and protein production of collagen from dihydropyridine-induced overgrowth cells. (Source: Journal of Periodontal Research)

Adenosine triphosphate stimulates RANKL expression through P2Y1 receptor–cyclo-oxygenase-dependent pathway in human periodontal ligament cells

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: Extracellular ATP stimulates RANKL expression in human periodontal ligament cells through a pathway dependent on the P2Y1 receptor, cAMP-dependent protein kinase, NF[kappa]B and COX. Our results suggest that, among the molecules responsible for the effect of mechanical stress, ATP participates in bone resorption or bone homeostasis by mediating its signal through the P2Y1 receptor and the NF[kappa]B[ndash]COX[ndash]RANKL axis in periodontal tissue. (Source: Journal of Periodontal Research)

Myeloid-related protein (MRP8/14) expression in gingival crevice fluid in periodontal health and disease and after treatment

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Andersen E, Dessaix IM, Perneger T, Mombelli A. Myeloid-related protein (MRP8/14) expression in gingival crevice fluid in periodontal health and disease and after treatment. J Periodont Res 2010; doi: 10.1111/j.1600-0765.2009.01257.x. © 2010 John Wiley & Sons A/SBackground and Objective: Myeloid-related protein (MRP8/14) and its subunits are biomarkers of inflammation. The present study evaluated whether gingival crevice fluid levels of these markers discriminate periodontitis from healthy sites in patients with chronic periodontitis or diseased from healthy subjects, and whether these biomarkers detect longitudinal changes after therapy.Material and Methods: Levels of MRP8/14, MRP14 and total protein were quantified in 19 periodontitis patients before non-surgical periodontal therapy, af...

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The expressions of claudin-1 and E-cadherin in junctional epithelium

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: These data suggest that claudin-1 and E-cadherin exist in the junctional epithelium and may play an important role in epithelial barrier function. (Source: Journal of Periodontal Research)

Human β-defensin-3 up-regulates cyclooxygenase-2 expression and prostaglandin E2 synthesis in human gingival fibroblasts

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: These findings indicate that epithelial human [beta]-defensin-3 functions as a proinflammatory mediator in controlling arachidonic acid metabolism in underlying fibroblasts. (Source: Journal of Periodontal Research)

Immune response to cytolethal distending toxin of Aggregatibacter actinomycetemcomitans in periodontitis patients

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: Response to CdtA and CdtB did not correlate with the periodontal status of the subject in the context of an A. actinomycetemcomitans infection. However, a response to CdtC was found in sera of generalized but not of localized aggressive periodontitis subjects. Differences in response to CdtC between generalized and localized aggressive periodontitis subjects indicate that CDT could be expressed differently by the infecting strains. Alternatively, the antibody response to CdtC could require the colonization of multiple sites. (Source: Journal of Periodontal Research)

Proapoptotic fibronectin fragment induces the degradation of ubiquitinated p53 via proteasomes in periodontal ligament cells

Journal of Periodontal Research — Tue, 09 Mar 2010 00:00:00 +0100

Conclusion: These data show that a proapoptotic fibronectin matrix induces ubiquitination and degradation of p53 in the proteasome as part of a novel mechanism of apoptosis associated with inflammatory diseases. (Source: Journal of Periodontal Research)