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使下颌牙列向后移动的截骨术中,下颌升支垂直截骨术也是一种行之有效的方法。 1.切口:从磨牙后三角到第一磨牙的略偏颊侧之前庭沟处切开粘骨膜。2.显露:切开粘骨膜后,分离升支前缘、下颌角处的粘骨膜和咬肌,再在升支前缘近喙突处用撑开器撑开粘骨膜,并继续剥离。把显露的喙突用钳子夹夹住,充分游离升支外侧。其显露范围是从乙状切迹到整个升支外侧.而升支内侧的骨面不必显露。把Baner氏撑开器撑在乙状切迹与下颌缘处。3.截骨:截骨时要保护周围软组织与确保清楚的手术野,截骨采用特制摆动锯。从乙状切迹至升支下缘,在经下颌孔后
In the osteotomy to move the mandibular dentition backward, the vertical osteotomy of the mandibular ascending branch is also an effective method. 1. Incision: From the posterior triangle of the molars to the slightly buccal side of the first molars, the mucoperiosteum is incised. 2. Revealed: incision mucoperiosteal, the separation of the leading edge of the mandibular angle at the mucoperiosteal mucosa and masseter, and then in the ascending branch near the coracoid with distraction device propped open the mucoperiosteum, and continue to peel. The exposed coracoid pincer clamp clamp, fully free ascending lateral branch. The exposed range is from sigmoid notch to the outside of the entire ascending branch, while the inner side of the ascending branch does not have to be revealed. Hold the Baner's Retractor at the sigmoid notch and lower jaw edge. 3. Osteotomy: osteotomy to protect the surrounding soft tissue and ensure a clear surgical field, osteotomy using a special swing saw. From the sigmoid notch to ascending edge, after the jaw hole