本临床研究目的是了解Le FortⅠ型截骨术对人牙髓及牙齿生长萌出的生物影响。材料和方法本研究10例病人16～45岁(平均19岁),分为两组,16～25岁者为一组,25岁～10岁为一组。术后随访期6～78月。10例病人都施行了Le FortⅠ型截骨术,其中7例同期作了下颌截骨术,3例作了髂骨植入术, The purpose of this clinical study is to understand the biological effects of Le Fort I osteotomy on the growth of human dental pulp and teeth. Materials and Methods In this study, 10 patients aged 16 to 45 years (average 19 years old) were divided into two groups, one group of 16 to 25 years old and one group of 25 to 10 years old. Follow-up period from 6 to 78 months. All of the 10 patients underwent Le Fort Ⅰ osteotomy, in which 7 cases underwent mandibular osteotomy and 3 cases underwent ilium implantation.