Abstract
Background: Multiple risk factors have been identified for traumatic dental injuries, including crown fractures, in
various age groups and various populations. The objective of this study was to determine the prevalence, risk factors
and family related factors for crown trauma among 8 to 16 year-old children in a suburban population, Nigeria.
Methods: This is a secondary analysis of a data of 2107 children collected through a school-based survey. Study
participants were 8 to 16 year-old resident in suburban Nigeria. The independent variables for the study were
age, sex, socioeconomic status, and birth rank, family size and parenting status (one parent, step parent, both
parents, and guardians). Details were collected using an interviewer administered questionnaire. Intraoral
examination was conducted to identify presence of crown fracture. The independent variables associated with
and predictors of crown trauma were determinedusing chi-square and logistic regression analysis respectively.
Results: Only 167 (7.9 %) of the 2107 study participants had crown trauma. The teeth level prevalence of crown
trauma was 0.33 %. Children with middle socioeconomic status had reduced odds of having crown trauma when
compared with children with low socioeconomic status (AOR 0.50; CI 0.32–0.80). The odds of having crown traumawas
more than doubled in males when compared with females (AOR 2.41; CI 1.72–3.39) and almost doubled in children
living with single parents when compared with children living with both parents (AOR 1.94; CI 1.29–3.05).
Conclusions: The prevalence of crown traumawas low in this study population. Being a female and having
lowsocioeconomic status significantly reduced the risk factors for crown traumawhile living with single parents
increased risk for crown trauma.
