The purpose of the present study was to evaluate the incidence of dental anomalies in Brazilian patients with Down syndrome. A sample with 49 panoramic x-rays of syndromic patients aged 3 to 33 years (22 male and 27 female) was used. The characteristics of dental anomalies were observed in the panoramic radiographs in both the primary and permanent dentition, according to the ICD (International Classification of Diseases). The corresponding tables and percentile analysis were elaborated. There was a high incidence of syndromic patients with different types of anomalies, such as taurodontism (50%), proven anodontia (20.2%), suspected anodontia (10.7%), conic teeth (8.3%) and impacted teeth (5.9%). In conclusion, patients with Down syndrome presented a high incidence of dental anomalies and, in most cases, the same individual presented more than one dental anomaly.

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Objetivo: Avaliar, por meio de análise microbiológica, a contaminação nas resinas compostas utilizadas em 3 (três) clínicas odontológicas de uma Instituição de Ensino na cidade de Santa Maria, RS, Brasil e verificar a correlação da contaminação com a frequência do uso das resinas compostas. Método: Primeiramente foi realizado um levantamento quanto ao número de acadêmicos que utilizavam cada clínica, bem como o semestre à qual esses pertenciam. Um total de 100 (cem) amostras estava disponível para o estudo nas diferentes clínicas e foram analisados. Incrementos de 2 mm foram removidos de cada tubete de resina composta de forma asséptica em ambiente ambulatorial. Imediatamente após, as amostras foram levadas para o laboratório, onde foram imersas em tubos de ensaio contendo 5 mL do meio de cultura BHI (Brain Heart Infusion). Após 24h de incubação em estufa bacteriológica a 37ºC foi feita a primeira leitura da turvação do meio de cultura por um avaliador treinado, e após 48h, a última. Foi realizado um grupo controle negativo. As amostras nas quais ocorreu o turvamento do meio de cultura foram consideradas contaminadas. Resultados: Encontravam-se contaminadas 51% das resinas compostas analisadas, apresentando variação do percentual de ocorrência entre as clínicas incluídas. Foi encontrada correlação muito forte entre o número de alunos nas clínicas e porcentual de contaminação. Conclusão: Em algum momento do procedimento restaurador, executado pelos acadêmicos, ocorre uma falha geradora da contaminação. Assim, há risco de infecção cruzada, havendo a necessidade de buscar alternativas para barrar essa contaminação durante o procedimento.Materiais dentários; Contaminação biológica; Exposição a agentes biológicos. Objective:To evaluate by microbiological analysis, the contamination of composite resins in three dental clinics of a teaching institution in the city of Santa Maria, RS, Brazil and to assess the correlation between contamination and usage frequency of the resins. Method: First, a survey was performed to determine how many students practiced in each clinic and the teaching semester they were attending. One hundred samples were available for the study in the different clinics and all of them were analyzed. Two-millimeter increments were aseptically collected from each composite resin syringe in the outpatient setting. The samples were immediately to the laboratory and immersed in test tubes containing 5 mL of BHI (Brain Heart Infusion) culture medium. After 24-hour incubation period in a bacteriological incubator at 37 o C the first reading of the culture medium turbidity was made by an experienced examiner, and the last reading was made after 48 h. A negative control group was established. The samples in which turbidity of the culture medium occurred were considered as contaminated. Results: 51% of the analyzed composite resin samples were contaminated, with percentage varying among the clinics. A strong correlation was found between the number of students practicing in the clinic and the percentage of cont...

There is little material in the literature that compares biological width measurements in periapical and bite-wings radiographs with clinical measurements. The purpose of this study was to compare measurements of biological width taken by three different methods which are frequently used for planning periodontal surgery -periapical radiograph, bite-wing radiograph and transperiodontal probing -with the trans-surgical measurements. Thirty-four sites from twenty-one subjects were analyzed. The intra-class correlation coefficients between measurements obtained trans-surgically (gold standard) and those obtained by transperiodontal probing, periapical radiography and bite-wing radiography were determined. Average measurements were compared using the Wilcoxon test at a significance level of 0.05. Also, the frequency distribution of differences between test measurements and the gold standard was calculated. The results showed that transperiodontal probing (mean 2.05 mm) was the most accurate measurement, as compared to the gold standard (mean 1.97 mm), with no statistically significant difference observed. On the other hand, periapical and bite-wing radiographic mean values (1.56 mm and 1.72 mm, respectively) were smaller than the gold standard, with statistically significant differences (p < 0.05). It was concluded that transperiodontal probing was the most accurate measurement, as compared to the gold standard, followed by that obtained with the bite-wing radiograph. The clinical relevance of these results could be that planning for crown lengthening surgery should, preferably, include transperiodontal probing.