Traumatic Dental Injuries (TDIs) in 719 12-year Old Nigerian students

Title of Paper Traumatic Dental Injuries (TDIs) in 719 12-year Old Nigerian students
Authors Taiwo O.O, Jalo H.P. and Dhlakama G.H.
Year of Publication/Presentation 2010
Publication Details/Conference Venue 88th IADR General Session & Exhibition. July 14-17, 2010, Barcelona, Spain
Research Area Dental Trauma
Objectives: To determine the prevalence and causes of TDIs in 12-year old students in Nigerian. The study also sought to ascertain the relationship(s) between gender, location (urban and rural areas) and overjet in the presentation of TDIs.

Methods: The sample size included 719 12-year-old school children from 32 public schools. They were proportionately selected through a multistage sampling technique. TDIs to the teeth were evaluated clinically by one examiner (intra-examiner reliability test was 0.771 by Cronbach’s Alpha test). The TDIs were classified according to the modified Ellis classification. Overjet was considered a risk when its values were ≥5mm.The children answered a structured questionnaire on sociodemographics and oral health behaviours. Analysis was by the use of SPSS V15.0. Pearson’s Chi-squared test was used to test for association between variables and Odds ratio. P values <0.05 was considered statistically significant. Results: There were 411(57.2%) boys. 54.2% (390) students were from the urban areas. Prevalence of TDI was 15.2% (prevalence in the urban and rural locations were 15.1% and 15.2% respectively). The maxillary central incisors (66.7%) were the most affected teeth followed by the laterals (17.4%). Enamel fracture (73.5%) was the commonest type of TDI noticed followed by enamel and dentine fracture (15.9%). Falls (64.2%) was the most frequent cause of trauma. Collisions accounts for 9.2%. 89 (12.4%) students had overjet ≥5mm. TDIs were more prevalent among males (P = 0.025, OR = 1.520, 95% CI = 1.049, 2.202). The occurrence of TDIs was not related to location and overjet (P>0.05).

Conclusions: The prevalence of traumatized teeth among 12-year-olds in Nigeria was comparable with other studies. Being male was associated with a higher probability of having a traumatized tooth.