Cortes, Maria Ilma de Souza; (2000) Epidemiology of traumatic injuries to the permanent teeth and the impact of the injuries on the daily living of Brazilian schoolchildren. Doctoral thesis (Ph.D), UCL (University College London).

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Abstract

There is no data on the psychosocial impact of traumatic injuries to the permanent teeth among children. The aim of this study was to determine the prevalence of traumatic injuries to the permanent teeth in a population of schoolchildren. It also aimed at comparing the impact reported by children fractured incisors to that of children without any traumatic dental injury. It was hypothesised that children presenting fracture involving dentine in their anterior teeth were more likely to have an impact on daily living than children without any traumatic injury to the incisors. A cross-sectional survey was conducted in a sample of 3702 schoolchildren aged 9 to 14 years living in Belo Horizonte, Brazil. The aim of the study was to assess the prevalence and its relationship to clinical and social factors. In addition the survey would identify the eligible children for the case-control study to test the hypothesis. Sixty-eight children (cases) with fracture involving dentine and 136 children (controls) without any traumatic injury to the anterior teeth were included in the study. The index of Oral Impacts on Daily Performances (OIDP) was used to assess the impact. The proportion of children sustaining traumatic dental injuries increased from 8.0% among 9-year-olds to 16.1% among 14-year-olds. Children from high socio-economic status, having an overjet greater than 5.0 mm, with inadequate lip coverage and being male were more likely to have a traumatic dental injury than children from low socio-economic status, having an overjet equal or lower than 5 mm, with adequate lip coverage and being female (P<0.001). The results of the conditional logistic regression model, adjusted for the Aesthetic Component of the Index for Orthodontic Treatment Need and the DMFT index showed that children with fracture to the incisors involving dentine were 20 times (95% CI=7.0-57.7) more likely to report an impact on their daily living than children without any traumatic injury to the incisors.

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