口内升支垂直截骨术在矫治下颌前突畸形中的应用及改进

Correction of mandibular prognathism by intraoral vertical ramus osteotomy and improvement in the technic

口内进路的下颌升支垂直截骨术具有操作简单、出血少、术后肿胀轻等优点,广泛用于矫治下颌前突畸形。本文报告32例,并针对近心骨段骨折和移位的主要并发症提出改进措施,并探讨了手术适应证。

A new procedure, intraoral vertical ramus osteotomy (IVRO) becomes more and more popular in correction of mandibular prognathism recently. Simplified operation, decreased bleeding and mild reaction after operation are the advantages of this procedure. 32 cases of mandibular prognathism corrected by intraoral vertical ramus osteotomy were reported in this paper. Modifications for avoiding fracture and displacement of proximal segment, the main complication and indications of IVRO were discussed.