II. Risk factors for crown fractures of permanent incisors in children from Plovdiv.

Aim: The present study considers gender, age, overjet and lip competence as risk factors for children to sustain crown fractures to their permanent incisors.

Material And Methods: A total of 2572 children aged 7-11 years were included in the epidemiological study. They were randomly recruited from the schools in Plovdiv.

I. Prevalence of crown fractures of permanent incisors in schoolchildren aged 7-11 years from Plovdiv.

Unlabelled: The aim of the study was to determine the prevalence of crown fractures of permanent incisors in schoolchildren aged 7-11 years from the town of Plovdiv.

Material And Methods: The present study included 2572 children (1287 boys and 1285 girls) at the age of 7 to 11 years from Plovdiv. A modification of the WHO classification for reporting crown fractures was used.