Aim: To assess the prevalence and factors associated with permanent anterior teeth traumatic injuries in 9-13 year old school children of Mugappair, Chennai. Materials and Methods : Children aged 9 to 13 years from both the public and private schools in, Mugappair, Chennai formed the study population. Oral examination was done and traumatic injuries were recorded according to Holland__ampersandsignlsquo;s modification of Ellis and Davey classification. A total of 1515 children, of which 855 (56.44%) were boys and 660 (43.56%) were girls were included for the study. Results: The prevalence of children with anterior teeth traumatic injuries was found to be 19.41%. Age and gender were significantly associated with dental trauma. Male children were more affected than female children and the prevalence increased with age in the ratio of 2:1. Enamel fracture (64.97%) was the most common type of injury followed by enamel-dentine fracture(22.79%). The cause of all type of fractures was mainly due to fall during playing followed by bicycling.6.46% of children did not report the cause of trauma. Traffic accidents and violent impacts which often cause dental trauma were also less uncommon. Conclusion: The present study shows that there is a high prevalence of dental trauma among school going children of Chennai. Education regarding the dental injuries and its prevention through health promotion programs may play a major role in reducing the prevalence of dental injury and avoiding the financial costs of treatment, especially in developing countries.