经口内下颌支矢状劈开截骨术,Obwegecer1975年首先提出,Pont(1960)对该术式进行了改进,以后国内外学者均有不少改进。我们采用经口内下颌支矢状劈开截骨的方法,使下颌升支内外骨板截骨等手 Oral mandibular sagittal split osteotomy, Obwegecer first introduced in 1975, Pont (1960) to improve the operation, after the scholars at home and abroad have made many improvements. We use the oral mandibular branch sagittal split osteotomy method, so that the mandibular ascending and descending bone plate osteotomy and other hands