Prevalence of dental trauma in 5-6- and 12-14-year-old boys in Riyadh, Saudi Arabia.

This study involved 354 boys aged 5-6 years and 862 boys aged 12-14 years, attending 40 schools in Riyadh. All children were examined at school by a single dental examiner, using criteria similar to those employed in the survey of children's dental health in the United Kingdom. The prevalence of dental trauma in 354 Saudi boys aged 5-6 years was 33%. The most common type of dental trauma was fracture of enamel (71%) followed by loss of tooth due to trauma (13%), fracture into enamel and dentine (7%), discolouration (5%), pulp involvement (4%). No relationship between the degree of overjet and the occurrence of dental trauma in the primary dentition was observed. The prevalence of dental trauma in 862 12-14-year-old boys was 34%. The commonest dental trauma was fracture of enamel (74%) followed by fracture into enamel and dentine (15%), fracture into enamel-dentine and pulp (5%), loss of tooth due to trauma (3%), and discolouration (0.4%). A significant relationship (P=0.02) between the increased overjet (> or = 6 mm) and the occurrence of dental trauma in the permanent dentition was reported. The present study found no evidence of dental care provided for traumatised primary incisors in 5-6-year-old boys. The treatment of dental trauma in 12-14-year-old boys was negligible (2.4%). The present Saudi Arabian study showed higher prevalence of dental trauma in 5-6- and 12-14-year-old boys than the reported results of the United Kingdom Children's Dental Health Survey of the same age groups.