Abstract: PURPOSE: To investigate the epidemiological characteristics of out-patients with maxillofacial trauma and provide reference for prevention and treatment of maxillofacial trauma. METHODS: An epidemiological analysis was carried out among 5762 out-patients with maxillofacial trauma who were admitted to Shengjing Hospital Affiliated to China Medical University from January 2014 to December 2017. RESULTS: Male patients were more than female, and the ratio of male to female was 1.736:1. The peak age of trauma was 3-6 years (28.55%), followed by 0-3 years. Children aging 0-17 years accounted for 68.7% of the out-patients with maxillofacial trauma. Fall injury (72.9%) was the main cause of injury, followed by traffic accident (9.2%) and violence (7.5%). The third quarter (30.1%) was the peak of incidence. Forehead (37.24%) was the most common site of soft tissue injury, followed by cheek (19.04%) and lip (18.67%). CONCLUSIONS: Male patients were most frequently seen in out-patients with maxillofacial trauma, and the peak age was 3-6 years old. Falls and forehead are the most common causes of injury and site of injury.

Key words: Oral and maxillofacial trauma, Dental emergency, Retrospective study, Epidemiological characteristics