The aim of this work was to present a small cross-sectional survey of composite restoration clinical attributes associated with choices for replacement. Ninety-four composite fillings selected to be replaced were included in this study. A questionnaire was filled out after each procedure in order to assess the clinical conditions that indicated the restoration replacement (marginal staining, unsatisfactory restoration anatomy, marginal fracture, fractured restoration body, painful symptoms, dental fracture, composite discoloration and/or restoration displacement). These conditions could be combined. The chi-square and Exact Fisher tests were performed to analyze the different variables (p < 0.05). The results showed that composite shade discoloration was the main cause of restoration replacement (63.8%). Marginal staining (50%), unsatisfactory restoration anatomy (50%), marginal fracture (14.9%), painful symptoms (8.5%), fractured restoration body (4.3%), dental fracture (1.1%) and total displacement of the restoration (1.1%) were conditions that could be associated. The main cause of dental composite restoration replacement was material shade mismatch with the dental structure (anterior teeth) or marginal staining and unsatisfactory restoration shape (posterior teeth). Marginal staining and composite shade discoloration contrasting with dental structure were related to the presence of caries.
<strong>Objective:</strong> To evaluate the diagnostic reliability of a simplified tool to detect high-risk overjet for dental trauma. <strong>Material and </strong><strong>Methods:</strong> The study population was composed of 131 volunteers divided into two groups according to the overjet measurement in terms of risk for traumatic dental injury (GRAB: risk absent and GRPR: risk present). The distance between the most prominent labial surface and its corresponding counterpart was measured using both the conventional (WHO, 1997) and the simplified tool. The measurements were taken independently and on separate occasions by two previously calibrated dental surgeons (Kappa=0.86). The gold standard method, as recommended by the WHO (1997), was performed by an external examiner. The simplified method, based on pencil-marked wooden tongue depressors was carried out in a blind manner by the other examiner. Sensitivity, specificity, positive and negative predictive values were calculated for the classification of risk for dental trauma in terms of overjet using the simplified method and compared to the conventional method. <strong>Results:</strong> The results revealed high values for sensitivity (S=1), specificity (E=0.93), positive (PPV=0.95) and negative predictive value (NPV=1). <strong>Conclusion:</strong> The examination using the simplified tool was reliable in identifying high-risk overjet, thus offering an alternative to the conventional examination.
RESUMO O dente, em sua porção coronária, é recoberto pelo esmalte, e a porção radicular é recoberta pelo cemento, porém, quando existe uma agressão, essas camadas são removidas expondo a dentina e, conseqüentemente, tem-se a hipersensibilidade dentinária. Existem várias modalidades de tratamento para tal condição clínica, entre elas, os lasers de baixa potência. A proposta deste estudo foi ratificar a efetividade do laser de baixa potência no tratamento da hipersensibilidade. Foram selecionados dez pacientes, totalizando 50 dentes, que foram submetidos a três sessões com intervalos semanais com o laser de baixa potência de arseniato de Gálio-Alumínio (Bio Wave Red ®-Kondortech). Os resultados foram analisados pelo teste estatístico MANOVA e observou-se uma redução significativa dos dentes. Após a primeira sessão, obteve-se uma redução significativamente maior que nas subseqüentes. Palavras-chave: Hipersestesia dentinária. Laser. Teoria hidrodinâmica.
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