Comparative evaluation of the efficacy of occlusal splints fabricated in centric relation or maximum intercuspation in temporomandibular disorders patients

Fabrication of occlusal splints in centric relation for temporomandibular disorders (TMD) patients is arguable, since this position has been defined for asymptomatic stomatognathic system. Thus, maximum intercuspation might be employed in patients with occlusal stability, eliminating the need for interocclusal records. This study compared occlusal splints fabricated in centric relation and maximum intercuspation in muscle pain reduction of TMD patients. Twenty patients with TMD of myogenous origin and bruxism were divided into 2 groups treated with splints in maximum intercuspation (I) or centric relation (II). Clinical, electrognathographic and electromyographic examinations were performed before and 3 months after therapy. Data were analyzed by the Student's t test. Differences at 5% level of probability were considered statistically significant. There was a remarkable reduction in pain symptomatology, without statistically significant differences (p>0.05) between the groups. There was mandibular repositioning during therapy, as demonstrated by the change in occlusal contacts on the splints. Electrognathographic examination demonstrated a significant increase in maximum left lateral movement for group I and right lateral movement for group II (p<0.05). There were no significant differences (p>0.05) in the electromyographic activities at rest after utilization of both splints. In conclusion, both occlusal splints were effective for pain control and presented similar action. The results suggest that maximum intercuspation may be used for fabrication of occlusal splints in patients with occlusal stability without large discrepancies between centric relation and maximum intercuspation. Moreover, this technique is simpler and less expensive.

Bond strength between acrylic resin and maxillofacial silicone

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Chromatic stability of acrylic resins of artificial eyes submitted to accelerated aging and polishing

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Periodontal ligament influence on the stress distribution in a removable partial denture supported by implant: a finite element analysis

Objective: The non-homogenous aspect of periodontal ligament (PDL) has been examined using finite element analysis (FEA) to better simulate PDL behavior. The aim of this study was to assess, by 2-D FEA, the influence of non-homogenous PDL on the stress distribution when the free-end saddle removable partial denture (RPD) is partially supported by an osseointegrated implant. Material and Methods: Six finite element (FE) models of a partially edentulous mandible were created to represent two types of PDL (non-homogenous and homogenous) and two types of RPD (conventional RPD, supported by tooth and fibromucosa; and modified RPD, supported by tooth and implant [10.00x3.75 mm]). Two additional FE models without RPD were used as control models. The non-homogenous PDL was modeled using beam elements to simulate the crest, horizontal, oblique and apical fibers. The load (50 N) was applied in each cusp simultaneously. Regarding boundary conditions the border of alveolar ridge was fixed along the x axis. The FE software (Ansys 10.0) was used to compute the stress fields, and the von Mises stress criterion (sigma vM) was applied to analyze the results. Results: The peak of sigma vM in non-homogenous PDL was higher than that for the homogenous condition. The benefits of implants were enhanced for the non-homogenous PDL condition, with drastic sigma vM reduction on the posterior half of the alveolar ridge. The implant did not reduce the stress on the support tooth for both PDL conditions. Conclusion: The PDL modeled in the non-homogeneous form increased the benefits of the osseointegrated implant in comparison with the homogeneous condition. Using the non-homogenous PDL, the presence of osseointegrated implant did not reduce the stress on the supporting tooth.

Evaluation of the color stability of two techniques for reproducing artificial irides after microwave polymerization

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Distalização dos molares superiores com aparelho Pendex: estudo em modelos de gesso

OBJETIVO: a presente pesquisa clínica, longitudinal e prospectiva, avaliou os efeitos do aparelho Pendex mediante o emprego de modelos de gesso. METODOLOGIA: utilizou-se uma amostra de 30 modelos de gesso, obtidos no início e no final da distalização dos molares superiores com o aparelho Pendex, de 15 jovens brasileiros tratados no Curso de Pós-Graduação, nível de Mestrado em Ortodontia, da Faculdade de Odontologia de Araçatuba - UNESP. RESULTADOS E CONCLUSÕES: os resultados mostraram aumento do perímetro do arco dentário superior com inclinação distal e controle transversal dos primeiros molares superiores.

Art in the inclusion of children with special needs in dentistry

A proposta deste estudo é relatar a utilização da arte e seus segmentos, como recurso para inclusão da criança portadora de necessidades especiais ao ambiente odontológico. Foi utilizado como método a aplicação da arte em atividades de socioterapia e oficinas, divididas em módulos: sessão de socialização, oficinas de arte e atividades complementares, visando à elaboração de uma anamnese cultural por meio de questionários e a obtenção das preferências artísticas dos 313 participantes, previamente às suas assistências odontológicas no CAOE (Centro de Assistência Odontológica a Portadores de Necessidades Especiais) FOA/Unesp. de acordo com os questionários respondidos, a música e a pintura, segundo a preferência dos participantes, são os segmentos artísticos que mais auxiliam nas atividades de inclusão e adaptação. Concluímos que a utilização da arte na adaptação e inclusão ambiental do paciente, previamente à assistência odontológica, é favorável e eficaz.

Responsabilidade do profissional de saúde sobre a notificação de casos de violência doméstica

A notificação da violência doméstica pelos profissionais de saúde contribui para o dimensionamento epidemiológico do problema, permitindo o desenvolvimento de programas e ações específicas. O objetivo do trabalho foi verificar a responsabilidade desses profissionais em notificar a violência, especialmente a doméstica e as possíveis implicações legais e éticas a que estão sujeitos. Assim, foi realizada pesquisa na legislação brasileira e códigos de ética da medicina, odontologia, enfermagem e psicologia. Quanto à legislação, as sanções estão dispostas na Lei das Contravenções Penais, Estatuto da Criança e Adolescente, Estatuto do Idoso e na lei que trata da notificação compulsória de violência contra a mulher. Também existem penalidades em todos os códigos de ética analisados. Conclui-se que o profissional de saúde tem o dever de notificar os casos de violência que tiver conhecimento, podendo inclusive responder pela omissão.

Conhecimento sobre saúde bucal por concluintes de pedagogia

Este estudo teve por objetivo investigar as opiniões e o conhecimento de concluintes do curso de Pedagogia da cidade de Araçatuba, São Paulo, Brasil, em 2009, sobre saúde bucal. Para tanto, foi utilizado um questionário semiestruturado, abordando as opiniões dos estudantes sobre educação em saúde bucal e seu conhecimento sobre aspectos relativos à cárie dentária, à odontologia preventiva e à odontologia na primeira infância. de um universo de 120 estudantes, 92 (76,6%) consentiram participar do estudo. Destes, 86,8% acadêmicos acham que o professor deve atuar como educador em saúde bucal e 92,4% consideram importante a sua integração com profissionais de saúde. Responderam corretamente sobre o conceito de placa bacteriana e cárie dentária, respectivamente, 9% e 34,8%. Sobre o surgimento da cárie e sobre a possibilidade de se ter dentes saudáveis a vida inteira, responderam corretamente 67% e 83,7%, respectivamente. Assim, os concluintes de Pedagogia têm opiniões positivas em relação à educação em saúde bucal; entretanto, o seu conhecimento sobre a temática abordada é insatisfatório, uma vez que eles serão futuros professores e formadores de opinião.

Declínio da cárie em um município da região noroeste do Estado de São Paulo, Brasil, no período de 1998 a 2004

O objetivo do estudo foi analisar os índices CPOD, ceod, SiC Index e a porcentagem de crianças livres de cárie, em escolares de 5 a 12 anos da rede pública do Município de Bilac, São Paulo, Brasil, em estudos realizados nos anos de 1998, 2000, 2002 e 2004. Utilizou-se a mesma metodologia (OMS-1997) em todos os levantamentos. O teste estatístico kappa foi calculado a cada estudo, obtendo-se o valor de concordância interexaminadores mínimo de 0,86 e máximo de 0,89, e intra-examinador mínimo de 0,91. O índice ceod diminuiu pouco nos anos de 1998 e 2004. Houve uma redução contínua do índice CPOD aos 12 anos, passando de 5,28 em 1998 para 4,11 em 2000, 3,47 em 2002 e 2,62 em 2004, e o fenômeno da polarização. Na proporção inversa, a porcentagem de crianças com 5 anos livres de cárie aumentou de 37,9% em 1998 para 40% em 2000 e 2002, e 45,3% em 2004. Conclui-se que está ocorrendo a redução da cárie dentária na faixa etária de 12 anos entre escolares do ensino público do município.

Dental caries prevalence in children up to 36 months of age attending daycare centers in municipalities with different water fluoride content

This study determined the prevalence of cavitated caries lesions (CCL) and early childhood caries (ECC), and the contribution of some variables in children up to 36 months of age attending daycare centers in municipalities with different fluoride levels in the water supply: AFC (adequate fluoride content) and LFC (low fluoride content). After approval of the Ethics Committee, the parents were interviewed. The children were clinically examined using the same codes and criteria established by the WHO (World Health Organization) and the ADA (American Dental Association). Fisher's exact test (p<0.05) was applied for statistical analysis of data. The dmft indices calculated in the LFC and AFC municipalities were 0.57 and 0.68, respectively. Considering all children examined, 17.6% presented CCL and 33.8% ECC. The economic classification, mother's education level and duration of breastfeeding were considered statistically significant with regards to CCL prevalence. The age group, duration of the habit of drinking milk before bedtime and age at which oral hygiene started were considered statistically significant with regards to ECC prevalence.

Sexual harassment in Dentistry: prevalence in dental school

Objective: Sexual harassment is unlawful in all work and educational environments in most nations of the world. The goals of this study were to describe the sexual harassment prevalence and to evaluate the experiences and attitudes of undergraduate students in one dental school in Brazil. Material and Methods: An 18-item questionnaire was administered to 254 dental students with a completion rate of 82% (208). Students were requested to respond to questions about their background and academic level in dental school, their personal experiences with sexual harassment and their observation of someone else being sexually harassed. Bivariate statistical analyses were performed. Results: Fifteen percent of the students reported being sexually harassed by a patient, by a relative of a patient or by a professor. Male students had 3 times higher probability of being sexually harassed than female student [OR = 2.910 (1.113-7.611)]. Additionally, 25.4% of the students reported witnessing sexual harassment at the school environment. The majority of students did not feel professionally prepared to respond to unwanted sexual behaviors. Conclusion: These findings demonstrate that sexual harassment can occur in a dental school setting. There is a need for ongoing sexual harassment education programs for students and university staff. Increased knowledge of sexual harassment during graduation can better prepare dental professionals to respond to sexual harassment during their practice.

Evaluation of tissue reaction to Aroeira (Myracrodruon urundeuva) extracts: a histologic and edemogenic study

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Effect of 4% titanium tetrafluoride solution on the erosion of permanent and deciduous human enamel: an in situ/ex vivo study

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Urinary fluoride output in children following the use of a dual-fluoride varnish formulation

Objective: This study evaluated the bioavailability of fluoride after topical application of a dual-fluoride varnish commercially available in Brazil, when compared to Duraphat T. Material and methods: The urinary fluoride output was evaluated in seven 5-year-old children after application of the fluoride varnishes, in two different phases. In the first phase (I), children received topical application of the fluoride varnish Duofluorid XII (2.92% fluorine, calcium fluoride + 2.71% fluorine, sodium fluoride, FGM (TM)). After 1-month interval (phase II), the same amount (0.2 mL) of the fluoride varnish Duraphat (2.26% fluorine, sodium fluoride, Colgate T) was applied. Before each application all the volunteers brushed their teeth with placebo dentifrice for 7 days. Urinary collections were carried out 24 h prior up to 48 h after the applications. Fluoride intake from the diet was also estimated. Fluoride concentration in diet samples and urine was analyzed with the fluoride ion-specific electrode and a miniature calomel reference electrode coupled to a potentiometer. Data were tested by ANOVA and Tukey's post hoc test (p < 0.05). Results: There were significant differences in the urinary fluoride output between phases I and II. The use of Duofluorid XII did not significantly increase the urinary fluoride output, when compared to baseline levels. The application of Duraphat caused a transitory increase in the urinary fluoride output, returning to baseline levels 48 h after its use. Conclusions: The tested varnish formulation, which has been shown to be effective in in vitro studies, also can be considered safe.