Objectives: To determine the frequency of traumatic dental injuries according to Andreasen classification in children from 1 to 15 years old, treated in the Pediatric Dentistry Service of the Peruvian University Cayetano Heredia Teaching Dental Center, from January 2012 through October 2017. Material and methods: This study was descriptive and retrospective. Samples were composed of clinical records from patients with traumatic dental injuries who accomplished the inclusion and exclusion criteria. The evaluated variables were: types of traumatic dental injuries, sex, age of the patient, place, cause of the trauma and type of teeth affects. Results: A total of 9880 medical records were found, of which 1.18% (n = 117) represent patients who presented traumatic dental injuries. From these, 73 were from boys and 31 from girls, who had an average age of 4.36 ± 3.42 years old. Conclusions: In...