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  • Title: Traumatic anterior dental injuries in 7- to 12-year-old Brazilian children.
    Author: Cavalcanti AL, Bezerra PK, de Alencar CR, Moura C.
    Journal: Dent Traumatol; 2009 Apr; 25(2):198-202. PubMed ID: 19290900.
    Abstract:
    The aim of this study was to determine the prevalence and risk factors of dental trauma in the permanent anterior teeth of schoolchildren in Campina Grande, Brazil. A sample of 448 schoolchildren, 228 boys and 220 girls, aged 7-12 years, were randomly selected from 17 public schools in an urban area. 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. Overjet (OJ) was considered a risk factor when it presented values higher than 3 mm, while lip coverage was classified as adequate or inadequate. Yates' chi-squared test verified the association between the variables and odds ratio. Significance level was set at 5%. The prevalence of dental injuries was 21%. Boys experienced more injuries than girls, 21.9% and 20%, respectively (P > 0.05). Falls and collisions were the main causes of dental trauma, 63.8% and 24.5%, respectively. There was a statistically significant difference between traumatic dental injuries (TDI) and OJ (95% CI 0.22-0.63) (P < 0.001) and between TDI and inadequate lip coverage (95% CI 9.16-34.93) (P < 0.001). Data indicated that boys presenting an OJ size >3 mm and inadequate lip coverage were more likely to have TDI in Campina Grande, Brazil.
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