抄録
A clinico-statistical study of 147 patients with maxillofacial fractures who visited our hospital from May 2009 to April 2015 was conducted. The patients consisted of 93 males and 54 females, a male-to-female ratio of 1.7:1. Forty-six percent （67 cases） of patients were aged 10 to 20 years old. The causes of injury included 68 cases （46％） of tumbles and falls, 30 cases （20％） of traffic accidents, 23 cases （16％） of a blow, and 20 cases （14％） of sports accidents. Sixty-two cases （42％） were referred to our hospital from medical hospitals, 27 cases （18％） were referred from dental clinics, and 40 cases （27％） visited our hospital directly. Regarding the period from injury to visiting our hospital, 84％ of patients attended our hospital within three days of injury. The main fracture site was the mandible （105 cases, 71％） followed by multiple facial bones （22 cases, 15％）, the zygomatic bone （13 cases, 9％）, and the maxillary bone （7 cases, 5％）. Sixty-five patients （44％） were treated by open reduction with internal maxillary fixation, 31 patients （21％） were treated by closed reduction with internal maxillary fixation, and 47 patients （32％） were treated conservatively.
