[Prevalence of Carabelli's cusp in children 7-18 years old].

The purpose of the study was to examine the prevalence of the Carabelli's cusp in children aged 7-18. 326 dental plaster casts of children undergoing orthodontic treatment in our department were examined. The incidence and degree of expression were investigated in the first upper permanent molars and scored according to Dahlberg's eight grade scale classification. Dental morphological characteristics provide information on phylogenic and genetic studies and understanding variations within and among species. Our results showed that the total incidence of the cusp was 65.34%.