Trends in the prevalence of traumatic dental injuries in Brazilian preschool children

– Objective: The aim of this paper was to report trends in traumatic dental injuries (TDI) in preschool children in Brazil between 2002 and 2006, and assess whether gender, family structure, and socio‐economic differences in TDI are significant, and confirm the relationship between TDI and anatomic predisposing factors such as overjet and lip coverage. Methods: Three cross‐sectional surveys were conducted in 2002, 2004 and 2006 in Diadema using the same protocol. It was estimated that a minimum sample size of 778 5–59 months old children was required to achieve a level of precision with a standard error of