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Oral health self-care products: realities and mythsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In conclusion, there is a need for independent clinical trials to provide sufficient evidence regarding the use of OTC bleaching products. (Source: Brazilian Oral Research)
Source: Brazilian Oral Research - October 16, 2009 Category: Dentistry Source Type: journals

Over-the-counter whitening agents: a concise reviewEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In conclusion, there is a need for independent clinical trials to provide sufficient evidence regarding the use of OTC bleaching products. (Source: Brazilian Oral Research)
Source: Brazilian Oral Research - October 16, 2009 Category: Dentistry Source Type: journals

Dentine hypersensitivity: analysis of self-care productsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Dentine hypersensitivity is a condition that is often present in individuals, leading them to seek dental treatment. It has been described as an acute, provoked pain that is not attributable to other dental problems. Its actual prevalence is unknown, but it is interpreted as very unpleasant by individuals. Several therapeutic alternatives are available to manage dentine hypersensitivity, involving both in-office treatment and home-use products. The aim of this literature review was to evaluate self-care products for managing dentine hypersensitivity. Among the products available, dentifrices and fluorides are the most stud...
Source: Brazilian Oral Research - October 16, 2009 Category: Dentistry Source Type: journals

Control of erosive tooth wear: possibilities and rationaleEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Dental erosion is a type of wear caused by non bacterial acids or chelation. There is evidence of a significant increase in the prevalence of dental wear in the deciduous and permanent teeth as a consequence of the frequent intake of acidic foods and drinks, or due to gastric acid which may reach the oral cavity following reflux or vomiting episodes. The presence of acids is a prerequisite for dental erosion, but the erosive wear is complex and depends on the interaction of biological, chemical and behavioral factors. Even though erosion may be defined or described as an isolated process, in clinical situations other wear ...
Source: Brazilian Oral Research - October 16, 2009 Category: Dentistry Source Type: journals

Antimicrobial agents used in the control of periodontal biofilms: effective adjuncts to mechanical plaque control?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The control of biofilm accumulation on teeth has been the cornerstone of periodontal disease prevention for decades. However, the widespread prevalence of gingivitis suggests the inefficiency of self-performed mechanical plaque control in preventing gingival inflammation. This is particularly relevant in light of recent evidence suggesting that long standing gingivitis increases the risk of loss of attachment and that prevention of gingival inflammation might reduce the prevalence of mild to moderate periodontitis. Several antimicrobials have been tested as adjuncts to mechanical plaque control in order to improve the resu...
Source: Brazilian Oral Research - October 16, 2009 Category: Dentistry Source Type: journals

The cariogenic dental biofilm: good, bad or just something to control?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This paper discusses the role of dental biofilm and adjunctive therapies in the management of dental caries. Dental biofilm is a site of bacterial proliferation and growth, in addition to being a location of acid production. It also serves as a reservoir for calcium exchange between the tooth and saliva. The salivary pellicle, a protein-rich biofilm layer, regulates the reaction between tooth surface, saliva and erosive acids. The protective effects of this pellicle on enamel are well established. However, understanding the effects of the pellicle/biofilm interaction in protecting dentin from erosive conditions requires fu...
Source: Brazilian Oral Research - October 16, 2009 Category: Dentistry Source Type: journals

Enamel remineralization: controlling the caries disease or treating early caries lesions?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The emphasis currently given to new technologies for enamel remineralization suggests that the changes in the understanding of the dental caries disease, which occurred in the last century, were either not yet adopted or were forgotten. Just like in the past, when the disease was "treated" by restoring cavities, there is presently a misunderstanding on the concept of incipient lesion remineralization. The aim of this paper was to review some concepts about caries, the natural phenomenon of enamel remineralization and the effect of fluoride (F) on it, and also to discuss the clinical relevance of remineralizing products rec...
Source: Brazilian Oral Research - October 16, 2009 Category: Dentistry Source Type: journals

The history and global market of oral home-care productsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This literature review reports the history and the current market of oral home-care products. It provides information extending from the products used by our ancestors to those currently available, as well as on the changes in the supply and consumption of these products. Although the scientific knowledge about oral diseases has improved greatly in recent years, our ancestors had already been concerned with cleaning their teeth. A variety of rudimentary products and devices were used since before recorded history, like chewing sticks, tree twigs, bird feathers, animal bones, tooth powder and home-made mouth rinses. Today, ...
Source: Brazilian Oral Research - October 16, 2009 Category: Dentistry Source Type: journals

Oral health policies in BrazilEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Since Oral Health policies in Brazil have been constructed according to circumstances and possibilities, they should be understood within a given context. The present analysis contextualizes several issues of the Brazilian Oral Health Policy, called "Smiling Brazil", and describes its present stage of development. Today it involves re-organizing basic oral health care by deploying Oral Health Teams within the Family Health strategy, setting up Centers of Dental Specialists within an Oral Health network as a secondary care measure, setting up Regional Laboratories of Dental Prosthesis and a more extensive fluoridation of th...
Source: Brazilian Oral Research - October 16, 2009 Category: Dentistry Source Type: journals

Preface: over-the-counter preventive and therapeutic oral productsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Brazilian Oral Research)
Source: Brazilian Oral Research - October 16, 2009 Category: Dentistry Source Type: journals

Editorial: another fruitful scientific partnership shedding light on the issue of oral health self-care productsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Brazilian Oral Research)
Source: Brazilian Oral Research - October 16, 2009 Category: Dentistry Source Type: journals

Prevalence of enamel white spots and risk factors in children up to 36 months oldEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to determine the prevalence of enamel white spots and the quality of oral hygiene in children up to 36 months old, in municipalities with different fluoride levels in the water supply, analyzing the contribution of several variables. After approval of the Ethics Committee, the parents signed an informed consent form and were interviewed about their educational level, economic classification of the family, nursing habits, use of toothpaste, access to dental service and other information. The children were clinically examined using the same codes and criteria established by the WHO (World Health Org...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Risk indicators for aggressive periodontitis in an untreated isolated young population from BrazilEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study aimed to assess the prevalence of aggressive periodontitis (AgP), and to investigate the association between demographic, socioeconomic and behavioral risk indicators with AgP in an untreated and isolated young population in Southeastern Brazil. For this cross-sectional survey, 134 subjects aged 12-29 years were selected by a census. Of those eligible, 101 subjects received a full-mouth clinical examination, and were interviewed using a structured written questionnaire. Cases were defined as individuals with 4 or more teeth with attachment loss > 4 mm or > 5 mm in the age groups 12-19 and 20-29, respectively. Ov...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Microbiological composition associated with vitamin D receptor gene polymorphism in chronic periodontitisEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In conclusion, the Tt genotype was associated with periodontal disease; however, no association with the subgingival microbiota was observed. (Source: Brazilian Oral Research)
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

CT assessment of the correlation between clinical examination and bone involvement in oral malignant tumorsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The objective of this study was to correlate the clinical parameters (location, clinical presentation and TNM staging) of oral malignant tumors that can be associated with a potential of bone invasion and determine the accuracy of clinical examination to predict bone involvement, using computed tomography (CT). Twenty five patients, with oral malignant tumors were submitted to clinical and CT examinations. CT was considered the standard parameter to evaluate the presence of bone involvement. Clinical assessment of location, presentation form and TNM staging of the tumors were then compared to the CT findings in predicting ...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Comparative study of dental arch width in plaster models, photocopies and digitized imagesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to comparatively assess dental arch width, in the canine and molar regions, by means of direct measurements from plaster models, photocopies and digitized images of the models. The sample consisted of 130 pairs of plaster models, photocopies and digitized images of the models of white patients (n = 65), both genders, with Class I and Class II Division 1 malocclusions, treated by standard Edgewise mechanics and extraction of the four first premolars. Maxillary and mandibular intercanine and intermolar widths were measured by a calibrated examiner, prior to and after orthodontic treatment, using the...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Orthodontic treatment need in a group of 9-12-year-old Brazilian schoolchildrenEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The present study aimed to evaluate the need for orthodontic treatment in Brazilian schoolchildren presenting both late mixed dentition and early permanent dentition as well as to determine the possible factors associated with this necessity. Our randomly selected sample consisted of 407 schoolchildren aged between 9 and 12 years from Nova Friburgo (State of Rio de Janeiro), Brazil. All the children were evaluated according to the two components of the Index of Orthodontic Treatment Need (IOTN), namely, the Dental Health Component (DHC) and the Aesthetic Component (AC). Data analysis involved multiple logistic regression. ...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Stress analysis on the free-end distal extension of an implant-supported mandibular complete dentureEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A comparative and qualitative analysis of the tensions generated in the cantilever region of an implant-supported mandibular complete denture was conducted using the three-dimensional finite element method. The mechanical properties of the components were input in the model and a load of 15 N was applied in pre-determined points. In the first simulation, the load was applied on the occlusal surface of the first premolar. In the second simulation, it was applied on the first and second premolars. In the third simulation, it was applied on the first and second premolars and on the first molar. The different occlusion pattern...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Can previous acid etching increase the bond strength of a self-etching primer adhesive to enamel?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Because a greater research effort has been directed to analyzing the adhesive effectiveness of self etch primers to dentin, the aim of this study was to evaluate, by microtensile testing, the bond strength to enamel of a composite resin combined with a conventional adhesive system or with a self-etching primer adhesive, used according to its original prescription or used with previous acid etching. Thirty bovine teeth were divided into 3 groups with 10 teeth each (n= 10). In one of the groups, a self-etching primer (Clearfil SE Bond - Kuraray) was applied in accordance with the manufacturer's instructions and, in the other...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Stress distribution in the cervical region of an upper central incisor in a 3D finite element modelEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to evaluate the stress distribution in the cervical region of a sound upper central incisor in two clinical situations, standard and maximum masticatory forces, by means of a 3D model with the highest possible level of fidelity to the anatomic dimensions. Two models with 331,887 linear tetrahedral elements that represent a sound upper central incisor with periodontal ligament, cortical and trabecular bones were loaded at 45º in relation to the tooth's long axis. All structures were considered to be homogeneous and isotropic, with the exception of the enamel (anisotropic). A standard masticatory f...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Psychological factors and the incidence of temporomandibular disorders in early adolescenceEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The purpose of the present study was to evaluate the relationship between psychological variables and the clinical diagnosis of temporomandbular disorders (TMD) in 12-year-old adolescents. TMD pain was assessed by RDC/TMD examination (Research Diagnostic Criteria for Temporomandibular Disorders) (Axis I and II). Five-hundred and fifty-eight subjects (330 girls and 228 boys) were examined. Bivariate analyses were performed using the Chi-square test (χ2). The logistic regression models were adjusted estimating the Odds Ratios (OR), their 95% confidence intervals (CI), and significance levels. Only 2.19% of the boys and 8.18...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Association between socioeconomic status and HIV-associated oral lesions in Rio de Janeiro from 1997 to 2004Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study's intent was to evaluate the association between socioeconomic indicators, CD4+ counts and HIV-related oral lesions in the city of Rio de Janeiro, RJ, Brazil. A retrospective epidemiological analysis was performed of the medical records of HIV-positive patients that attended the Federal University of Rio de Janeiro between 1997 and 2004. Gender, age, mode of HIV transmission, level of education, monthly familial income, CD4+ counts and HIV-related oral lesions were assessed. For statistical analysis, the Chi-square test was used with a level of significance of 5%. 254 medical records were reviewed: 83 women and ...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Color stability after accelerated aging of two silicones, pigmented or not, for use in facial prosthesesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The objective of this study was, thus, to evaluate the color stability of two types of silicones, Silastic 732 and Silastic MDX4-4210. Twenty-four test specimens were made from each type of silicone and were divided into a colorless group and groups intrinsically pigmented with ceramics, cosmetics or iron oxide. The specimens were submitted to an accelerated system of aging for non-metallic materials. Readings were carried out initially and after periods corresponding to 163, 351, 692 and 1,000 hours of aging, using a reflection spectrophotometer analysis, and color alterations were calculated by the CIE L*a*b* system. The...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Evaluation of titanium implants with surface modification by laser beam: biomechanical study in rabbit tibiasEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The purpose of the present study was to evaluate, using a biomechanical test, the force needed to remove implants with surface modification by laser (Nd:YAG) in comparison with implants with machined surfaces. Twenty-four rabbits received one implant with each surface treatment in the tibia, machined surface (MS) and laser-modified surface (LMS). After 4, 8 and 12 weeks of healing, the removal torque was measured by a torque gauge. The surfaces studied were analyzed according to their topography, chemical composition and roughness. The average removal torque in each period was 23.28, 24.0 and 33.85 Ncm for MS, and 33.0, 39...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

In vitro evaluation of osteoblastic cell adhesion on machined osseointegrated implantsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
At present the major consideration in planning an implant design is to seek biocompatible surfaces that promote a favorable response from both cells and host tissues. Different treatments of implant surfaces may modulate the adhesion, proliferation and phenotypic expression of osteoblastic cells. For this reason, the aim of the present study was to evaluate the biocompatibility of an implant surface, observing adhesion, cell morphology and proliferation of osteoblast-like cells cultivated on a commercially available titanium dental implant (Titamax Liso®, Neodent, Curitiba, PR, Brazil). The implant samples were immersed i...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Determinant factors of toothache in 8- and 9-year-old schoolchildren, Belo Horizonte, MG, BrazilEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A cross-sectional study was carried out to determine the prevalence, severity and impact of toothache among schoolchildren associated with socio-demographic variables (gender, degree of maternal schooling, economic group, and oral health status). Six hundred and one 8- and 9-year-old children were randomly selected from schools in Belo Horizonte, MG, Brazil. After formal authorization was obtained from their parents, the children were interviewed and clinically examined by a single examiner. The Chi squared test was applied and the odds ratio obtained. The prevalence of toothache was 45.9% (276/601), of which 15.6% (94/601...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Radiopacity evaluation of root canal sealers containing calcium hydroxide and MTAEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In conclusion, the calcium hydroxide- and MTA-containing root canal sealers had different radiopacities. However, all materials presented radiopacity values above the minimum recommended by the ISO standard. (Source: Brazilian Oral Research)
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Evaluation of the diffusion capacity of calcium hydroxide pastes through the dentinal tubulesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In conclusion, groups I and IV presented a better diffusion capacity through dentin than groups II and III; 2% chlorhexidine can be used as a vehicle in calcium hydroxide pastes. (Source: Brazilian Oral Research)
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Effect of light-curing method and indirect veneering materials on the Knoop hardness of a resin cementEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study evaluated the Knoop hardness of a dual-cured resin cement (Rely-X ARC) activated solely by chemical reaction (control group) or by chemical / physical mode, light-cured through a 1.5 mm thick ceramic (HeraCeram) or composite (Artglass) disc. Light curing was carried out using conventional halogen light (XL2500) for 40 s (QTH); light emitting diodes (Ultrablue Is) for 40 s (LED); and Xenon plasma arc (Apollo 95E) for 3 s (PAC). Bovine incisors had their buccal face flattened and hybridized. On this surface a rubber mold (5 mm in diameter and 1 mm in height) was bulk filled with the resin cement. A polyester strip...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Assessment of the frequency of routine removal of dental plaque prior to caries diagnosis by dentists in three cities in southern BrazilEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to assess the frequency of routine use of dental prophylaxis prior to visual inspection, in order to diagnose caries, by dentists with different lapses of time after graduating time. One hundred and fifty one Brazilian dentists were interviewed in 3 Brazilian cities to determine if they usually remove dental plaque prior to visual inspection for caries diagnosis. The dentists were stratified according to year of graduation. The association between the lapse of time after graduating and the practice of routinely removing dental plaque before clinical examination was tested using the chi-square test...
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

The benefits and newly required practices brought about by innovations in the communication between professionalsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Brazilian Oral Research)
Source: Brazilian Oral Research - August 14, 2009 Category: Dentistry Source Type: journals

Effects of the unilateral removal and dissection of the masseter muscle on the facial growth of young ratsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study analyzed the effects of the unilateral removal and dissection of the masseter muscle on the facial growth of young rats. A total of 30 one-month-old Wistar rats were used. Unilateral complete removal of the masseter muscle was performed in the removal group, and detachment followed by repositioning of the masseter muscle was performed in the dissection group, while only surgical access was performed in the sham-operated group. The animals were sacrificed at three months of age. Axial radiographic projections of the skulls and lateral projections of the hemimandibles were taken. Cephalometric evaluations were mad...
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Clinical and radiographic study of orofacial alterations in patients with systemic sclerosisEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Systemic sclerosis (SS) is an autoimmune disease with great repercussions on the hard and soft tissues of the orofacial region. The aim of this study was to investigate the relationship between mandibular osteolysis and mouth opening measurements, duration of disease and presence/absence of teeth. Twenty-five subjects were selected: 15 diagnosed with systemic sclerosis and 10 healthy controls. The SS patients were grouped according to the presence (group I) or absence (group II) of mandibular osteolysis. The healthy subjects served as the control group (III). All of them underwent panoramic radiography on Ortophos® equipm...
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Relationship between oral clinical conditions and daily performancesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to assess the impact of oral status on the daily performances of civil servants from the Public Works and Waste Management Department of the city of Porto Alegre, located in Southern Brazil. A cross-sectional study was conducted on a representative sample composed of 276 civil servants with ages ranging from 35 to 44 years. The Oral Impacts on Daily Performances index developed was employed to measure impacts caused by oral clinical conditions. Oral examinations were performed after the interviews. Multinomial Logistic Regression Analysis was used. After adjusting for sex and educational level, th...
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Study of the surface hardness and modulus of elasticity of conventional and microwave-cured acrylic resinsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to evaluate the following acrylic resins: Clássico®, QC-20® and Lucitone®, recommended specifically for thermal polymerization, and Acron MC® and VIPI-WAVE®, made for polymerization by microwave energy. The resins were evaluated regarding their surface nanohardness and modulus of elasticity, while varying the polymerization time recommended by the manufacturer. They were also compared as to the presence of water absorbed by the samples. The technique used was nanoindentation, using the Nano Indenter XP®, MTS. According to an intra-group analysis, when using the polymerization time recommend...
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Influence of diltiazem in combination with a sucrose-rich diet on gingival alterations in ratsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to evaluate the influence of diltiazem in combination with a sucrose-rich diet on gingival alterations in rats. One hundred and twenty male Holtzman rats were randomly assigned to 10 groups (n = 12), being 2 control groups treated with saline and 8 test groups treated with diltiazem in daily doses of 5, 25, 50 and 100 mg/kg during 40 or 60 days. Afterwards, the mandibles were removed for macroscopic, histologic and histometric analyses of the buccal gingiva of the mandibular right first molar. No macroscopic characteristic of gingival overgrowth was observed in any of the groups. The microscopic a...
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Evaluation of final-year dental students concerning therapeutic decision making for proximal cariesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This cross-sectional study aimed to determine the radiographic criteria used by final-year dental students when defining the need for restorative treatment for proximal caries, as well as investigating potentially associated factors in this therapeutic decision. A questionnaire with two schematic diagrams presenting five levels of proximal lesion penetration was administered to students attending the six private and three public dental schools in the state of Rio Grande do Sul, Southern Brazil. Absolute and relative frequencies were described and inferential statistics involving Chi-square and McNemar tests and simple logi...
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Evaluation of hardness and surface roughness of two maxillofacial silicones following disinfectionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The purpose of this study was to evaluate the Shore A hardness and surface roughness of two silicones for maxillofacial prosthetic treatment, under the influence of chemical disinfection and storage. Twenty-eight specimens were obtained, half of which were made of Silastic MDX 4-4210 silicone and, the other half were made of Silastic 732 RTV silicone. The specimens were divided into four groups: Silastic 732 RTV and MDX 4-4210 with disinfection 3 times a week with Efferdent tablets and the same materials without disinfection. The hardness of the materials was analyzed with a Shore A Durometer. The surface roughness was est...
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Retrospective analysis of oral peripheral nerve sheath tumors in BraziliansEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study may be useful in clinical dentistry and oral pathology practice and may be used as baseline data regarding oral peripheral nerve sheath tumors in other populations. (Source: Brazilian Oral Research)
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Prevalence of orofacial clefts and social factors in BrazilEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to investigate the prevalence of orofacial clefts in live newborns from 1998 to 2002 in Brazilian state capitals and correlate their occurrence with a number of relevant socioeconomic factors collected in the 2000 census. Data was obtained from the Public Health Hospital Information System (SIH-SUS), Information System of Live Hospital Births (SINASC) and Atlases of Human Development in Brazil. The results showed that the mean prevalence of orofacial clefts in Brazil was 0.36 per 1,000 live births. Using Pearson's correlation coefficient, the correlation between cleft rate and social factors was n...
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Oral clefts, consanguinity, parental tobacco and alcohol use: a case-control study in Rio de Janeiro, BrazilEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study provides further evidence of a possible role of maternal exposure to tobacco smoke and alcohol in the etiology of nonsyndromic oral clefts. (Source: Brazilian Oral Research)
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Endoscopic endodontic microsurgery: 2-year evaluation of healing and functionalityEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This prospective clinical study aimed to evaluate the benefits of the endoscope as an aid to root-end management, and to assess the treatment outcome during 2 years following surgery. Forty-three endodontic surgical procedures in 30 patients were performed with the aid of an endoscope and followed for a period of 2 years. Radiographic criteria and clinical evaluation were used to assess the outcome. All cases were evaluated in terms of healing and functionality. 91.1% and 90.7% of the teeth evaluated after 1 and 2 years, respectively, were classified as successful. We found no statistically significant differences for both...
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Comparison of the time required for removal of intraradicular cast posts using two Brazilian ultrasound devicesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this in vitro study was to compare the time required for removal of intraradicular cast posts cemented with zinc phosphate (ZF) or glass ionomer cement (GIC), using two Brazilian ultrasound devices (BUD). Seventy two human inferior premolars with single root canals were sectioned transversally at the cementoenamel junction. In each specimen, the root canal was endodontically treated, the post space was prepared to a depth of 9 mm and the canal was molded to obtain a post impression. After the casting procedures, the posts were randomly distributed into 2 groups (n = 36) according to the luting material used: G1 ...
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Influence of sterilization method on the bond strength of caries-affected dentinEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study evaluated the effect of sterilization method on the bond strength of caries-affected dentin before artificial caries development and after restoration. Twelve bovine incisors were sectioned perpendicularly to their long axes at 7 mm from the amelodentinal junction. They were painted with acid-resistant nail varnish, except on an exposed coronal dentin area. Four groups were formed (n = 3) in accordance with the sterilization method used, before artificial caries development and after complete restoration: NE - no sterilization (control group); G - gamma-rays before and after; A - steam autoclave before and after...
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Flexural strength and hardness of direct and indirect compositesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The objective of this study was to evaluate the flexural strength (σf) and hardness (H) of direct and indirect composites, testing the hypotheses that direct resin composites produce higher σf and H values than indirect composites and that these properties are positively related. Ten bar-shaped specimens (25 mm x 2 mm x 2 mm) were fabricated for each direct [D250 - Filtek Z250 (3M-Espe) and D350 - Filtek Z350 (3M-Espe)] and indirect [ISin - Sinfony (3M-Espe) and IVM - VitaVM LC (Vita Zahnfabrik)] materials, according to the manufacturer's instructions and ISO4049 specifications. The σf was tested in three-point bending ...
Source: Brazilian Oral Research - June 25, 2009 Category: Dentistry Source Type: journals

Brazilian oral research: where is it headed?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Brazilian Oral Research)
Source: Brazilian Oral Research - June 2, 2009 Category: Dentistry Source Type: journals

Accuracy of stone casts obtained by different impression materialsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Several impression materials are available in the Brazilian marketplace to be used in oral rehabilitation. The aim of this study was to compare the accuracy of different impression materials used for fixed partial dentures following the manufacturers' instructions. A master model representing a partially edentulous mandibular right hemi-arch segment whose teeth were prepared to receive full crowns was used. Custom trays were prepared with auto-polymerizing acrylic resin and impressions were performed with a dental surveyor, standardizing the path of insertion and removal of the tray. Alginate and elastomeric materials were...
Source: Brazilian Oral Research - January 16, 2009 Category: Dentistry Source Type: journals

The advancing internationalization of our researchEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Brazilian Oral Research)
Source: Brazilian Oral Research - January 16, 2009 Category: Dentistry Source Type: journals

Brazilian Oral Research: combining scientific excellence and social impactEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Brazilian Oral Research)
Source: Brazilian Oral Research - October 24, 2008 Category: Dentistry Source Type: journals

Anatomic variation of cranial parasympathetic gangliaEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Having broad knowledge of anatomy is essential for practicing dentistry. Certain anatomical structures call for detailed studies due to their anatomical and functional importance. Nevertheless, some structures are difficult to visualize and identify due to their small volume and complicated access. Such is the case of the parasympathetic ganglia located in the cranial part of the autonomic nervous system, which include: the ciliary ganglion (located deeply in the orbit, laterally to the optic nerve), the pterygopalatine ganglion (located in the pterygopalatine fossa), the submandibular ganglion (located laterally to the hy...
Source: Brazilian Oral Research - July 14, 2008 Category: Dentistry Source Type: journals