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Kramer PF, Feldens EG et al. Dent Traumatol 2015; 31: 177–183

The aims of this study were to determine the prevalence of traumatic injuries to deciduous teeth in children, and to identify causative factors in order to minimise such injuries. The prevalence of traumatic injuries in deciduous teeth was 13.3%.The investigators state the probability of this occurring was 50% higher in children who used a pacifier (PR: 1.50; 95% CI: 1.08–2.10), although of note 'threefold higher in children with overjet >5 mm (PR: 2.73; 95% CI: 1.77–4.20) compared with children with overjet ≤2 mm,' where PR is prevalence ratio (prevalence of dental trauma with >5 mm overjet, compared to the group with <2 mm). Poisson regression analysis revealed an increased overjet was the most important factor associated with dental trauma. Despite this, the investigators argue 'early counsel(l)ing on pacifier use' could minimise such injuries. In this cross-sectional study, the overjet was measured and questionnaire data gathered on 1,316 children aged 0-5 years old, living in Brazil.