Prevalence and factors influencing bullying among Egyptian schoolchildren.

Objective: To evaluate the prevalence of bullying among schoolchildren and to study the correlation between bullying and a specific type of malocclusion, self-esteem, oral health-related quality of life (OHRQoL), the need for orthodontic treatment and socioeconomic status.

Design: A cross-sectional study.

Setting: Low, middle and high socioeconomic group schools in the same educational district in Cairo, Egypt.