The aim of this study was to investigate the risk factors associated with the occurrence of dental trauma in permanent anterior teeth of schoolchildren in Recife, Brazil. It included a random sample of 1046 boys and girls aged 12 attending both public and private schools. The sample size was calculated using a 95% confidence interval level; a statistical significance of 5% (alpha); a sample power of 80%; and an odds ratio of 1.55. The sample selection was carried out in two stages: first, schools were selected by simple sampling, and then children were chosen using a proportionality coefficient. Data were collected through clinical examinations and interviews, after examiner calibration. Dental trauma was classified according to Andreasen criteria. Overjet was considered a risk factor when it presented values higher than 5 mm. Lip coverage was classified as adequate or inadequate, while obesity was considered according to National Center for Health Statistics procedures for the assessment of nutritional status. Data were summarized and analyzed using the statistical software SPSS. The prevalence of dental injuries was 10.5%. Boys experienced more injuries than girls, 12.2% and 8.8%, respectively (P > 0.05). Children attending public schools presented more traumatic injuries than those from private schools, 11.4% and 9.5%, respectively, but there was no statistically significant difference (P > 0.05). There was a statistically significant difference between traumatic dental injuries and overjet (P < 0.05); between traumatic dental injuries and inadequate lip coverage (P = 0.000), and between obesity and dental trauma (P < 0.05). It was concluded that boys attending public schools and presenting an overjet size >5 mm, inadequate lip coverage, and obesity were more likely to have traumatic dental injuries in Recife, Brazil.

The aim of this analytical cross‐sectional study was to evaluate the presence of work‐related musculoskeletal disorders (WMSD) among dental students in two Brazilian dental schools. The sample included 227 randomized subjects from fifth to ninth semesters who were developing clinical activities. Each student signed an informed consent form. A self‐reporting questionnaire was used to obtain data on the practice of physical exercise, the presence of pain during or soon after treating patients, and the adoption of preventive measures related to clinical activities. Results were analyzed using the Statistical Package for Social Sciences 13.0. The χ2 test was used to identify associations between variables. The presence of pain during or after clinical work was reported by 173 participants (76.2 percent). Statistically significant differences were found between gender and the occurrence of pain. Pain was present during clinical activities (p=0.006) and imposed limitations on the work routine (p=0.011). Among those who practiced physical exercise, eighty‐eight (74.6 percent) reported pain. The high percentage of pain reported by dental students suggests the value of reviewing work conditions in dental practices in order to minimize the exposure of all workers to WMSD.

The aim of this study was to investigate if obesity is associated to the occurrence of dental trauma in the permanent anterior teeth of adolescents from Recife, Brazil. It included a random sample of 1046 boys and girls aged 12 years attending both public and private schools. The sample size was calculated using a 95% confidence interval level; a statistical significance of 5%; and an odds ratio of 1.55. The sample selection was carried out in two stages: first, schools were selected by simple sampling, and then children were chosen using a proportionality coefficient. Data were collected through clinical examinations and interviews, after examiner calibration. Dental trauma was classified according to ANDREASEN; ANDREASEN criteria. Obesity was considered according to National Center of Health Statistics - NCHS (USA) procedures for the assessment of nutritional status. Subjects were considered as non-obese when the observed percentile was < or = 97, while obese adolescent presented percentiles >97. Data were summarized and analyzed using the statistical software SPSS. The prevalence of traumatic injuries was higher among obese boys than obese girls (17.2% and 16.2%, respectively), but there were no statistically significant differences between traumatic dental injuries and obesity (P > 0.05). It was concluded that the presence of obesity was not associated to traumatic dental injuries in adolescents from Recife, Brazil.

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The aim of this study was to describe the first records of termite activity on non-fossilized human bones in Brazil. The cases reported in this study resulted from forensic analysis of six human skeletons found in northeastern Brazil between 2012 and 2014. Traces of tunnels and nests commonly produced by termites were found on several human bone surfaces as well as the specimens and characteristic signs of osteophagic activity. In four cases, the species were identified: Amitermes amifer Silvestri, 1901, Nasutitermes corniger (Motschulsky, 1855) (on two skeletons), and Microcerotermes indistinctus Mathews, 1977. In two other cases, the activity of termites on bone surfaces was evidenced by remains of nests and tunnels produced by these insects. At least in the samples of human remains available for this report, the number of termites collected was greater on bones found during autumn, the rainy season in the Northeast of Brazil. The human bones examined showed termites like insects with lots of strength at bone degradation, capable of continuing the process of decomposition of human remains even in completely skeletonized bodies. Palavras-chave: Entomologia, Isoptera, osso e ossos, Antropologia Forense. Keywords