Prevalence of and factors associated with enamel fracture and other traumas in Brazilian children 8–10 years old

Abstract

The aim of this study was to assess the prevalence anddiscriminate the associated factors between enamel fractures and othertrauma/trauma sequelae in 8 to 10-year-old Brazilian schoolchildren.A representative sample of 1,201 children from public and privateschools were enrolled in this cross-sectional study. Questionnairesabout sociodemographic characteristics were answered by parents. Theoutcome variable (traumatic dental injury, TDI) was multi-categorized.Independent individual variables were sex, age, number of residents inhousehold, parents/caregivers’ level of education, family income, dentalcaries, and overjet. Type of school was considered an independentcontextual variable. Multilevel analysis, bivariate, and multivariatemultinomial logistic regression models were performed. The prevalenceof TDI was 14.0% (2.8% with other trauma/trauma sequelae). Themultilevel analysis revealed no significant difference between the typeof school and TDI. The multinomial logistic regression showed thatboys (OR = 2.3; 95%CI: 1.1–4.8), older children (OR = 1.8; 95%CI: 1.1–3.0)and individuals with an overjet > 3 mm (OR = 2.5; 95%CI: 1.0–6.2) weremore likely to present other trauma/trauma sequelae. Enamel fracturewas not significantly associated with any variables. The prevalence ofTDI in 8 to 10-year-old schoolchildren was 14% but only 2.8% of othertrauma/trauma sequelae. Differences regarding the associated factorsof TDI involving enamel fracture or other trauma/trauma sequelaewere detected, suggesting that the different TDI classification cannot beevaluated as a single category