사고원인별 구강 악안면손상의 양상 및 정도에 관한 임상적 연구

A clinical study on the nature and severity of oral and maxillofacial injuries by cause

This is a retrospective study on the nature and severity of oral & maxillofacial injuries by cause Thhe study was based on a series of 811 patients with oral & maxillofacial injuries treated as in-patient at Wonju Christian Hospital of Wonju medical College during the period of Jan. 1984 through Dec. 1988 The results obtained are as follows ; 1. The ratio of men to women was 3.9:1. in yearly distribution, the number of patients have been increased year after year. 2. The most frequent cause of oral and maxillofacial injuries was the traffic accident(57.3%). In the traffic accident, autobicycle accident was the most frequent cause(24.6%). 3. The age frequency was the highest in the third decade(33.8%). 4. The most common location of oral and maxillofacial injuries was mandible(37.7 % ), zygoma and zygomatic arch(24.3%), nasal bone(21.9%) and maxilla(l6.1%) were next in order of frequency. the classification by the location of fracture, the frequency of singel fracture was 79.2% and combined fracture was 47.5%. In these patientsm,m one-location involvements were 79.2%, two 15.5%, three 4.7%, entire location were 9.6%. 5. In the case of tooth and alveolar bone injuries, tooth fracture was the most frequent case(27%). 7. In the type of mandible, simple fracture(59.2%) was the most frequent, type and autobicycle accident was the most frequent cause(19.6%). In proportional ratio, out-car accident(75%) was the most frequent type of simple fracture and others(40%) was the most frequent type of compound fracture. The most frequent fracture site of mandible was symplhyseal area(56.6%). 8. In the frequency of combined fracture of mandible by cause, symphysis or body with condyle fracture was the highest frequency(l7.8%). 9. In cases of maxilla and zygoma fracture, Lefort Ⅱ fracture was the major type of fracture(26.3%). The most frequent cause(39.4%) was the autobicycle accident. 10. In 811 patients of oral and maxillofacial injuries, the frequency of associated injuries was head & neck 63.9%, chest 15.4%, extremities 14.0%, abdomen 6.7% were next in order of frequency. 11. In A.I.S. of oral and maxiillofacial area, the highest score of A.I.S. in the every cause was 4 except the sllipdown case. the mean score of autobicycle and industrial accident was 3 and it meant the severiousness of injury. 12. The highest score of L.S.S. by cause was the autobicycle accident(56). In the mean score of I.S.S., 26(industrial accident) was the highest score.