title: Prevalence and correlates of traumatic injuries to the permanent teeth of schoolchildren aged 9-14 years in Belo Horizonte, Brazil.
abstract: A cross-sectional survey was carried out on 3702 boys and girls aged 9-14 years, attending public and private primary schools in Belo Horizonte, Brazil. A multi-stage sampling technique using an equal probability scheme was adopted to select the children. The response rate for the total sample was 97%. Dental examinations were carried out by one dentist (MISC). Intra-examiner agreement was very good. The prevalence of dental injuries increased from 8% at the age of 9 years to 13.6% at 12 and 16.1% at 14 years. Adjusted results showed that children from high socio-economic backgrounds were 1.4 (95% CI = 1.15-1.79) times more likely to present with a dental injury than children with low SES. Boys were 1.7 times (95% CI = 1.41-2.16) more likely to have dental injuries than girls. Children with an overjet size greater than 5.0 mm were 1.37 times (95% CI = 1.06-1.80) more likely to have a dental injury than children with an overjet size equal or lower than 5.0 mm. Finally, children with an adequate lip coverage were 0.56 times (95% CI = 0.44-0.72) less likely to have a traumatic dental injury than those with inadequate lip coverage.
authors.affiliation: Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil.
authors.forename: M I
authors.initials: MI
authors.lastname: Cortes
authors.forename: W
authors.initials: W
authors.lastname: Marcenes
authors.forename: A
authors.initials: A
authors.lastname: Sheiham
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001938:Brazil / Q000453:epidemiology; D002648:Child; D016001:Confidence Intervals; D003430:Cross-Sectional Studies; D003743:Dental Enamel / Q000293:injuries; D003793:Dental Restoration, Permanent / Q000706:statistics & numerical data; D003804:Dentin / Q000293:injuries; D005260:Female; D006801:Humans; D007180:Incisor / Q000293:injuries; D008046:Lip / Q000473:pathology; D016015:Logistic Models; D008297:Male; D008310:Malocclusion / Q000453:epidemiology; D015588:Observer Variation; D015995:Prevalence; D012737:Sex Factors; D012923:Social Class; D013223:Statistics as Topic; D014082:Tooth Fractures / Q000453:epidemiology; D018677:Tooth Injuries / Q000453:epidemiology*