Abstract
目的 评价Le-FortⅠ型切开分块截骨联合正畸技术矫治严重牙颌面畸形的效果.方法对17例成年患者术前正畸去代偿和排齐拥挤错位牙齿,采用Le-FortⅠ型截骨,断离上颌骨,按术前设计将断离上颌骨分成2～4块,分块的上颌骨通过咬合板定位,微型钛板加钛钉坚固内固定.下颌畸形同期行下颌骨切开整复,之后配合正畸调整咬合.结果本组17例,X线头影测量显示手术前后SNA角、SNB角等软硬组织差异有统计学意义(P＜0.05),术后面部外形及口腔功能均达到术前设计的预测效果,正畸矫治时间缩短,无1例骨块坏死,手术安全性高.随访3～60个月,均无复发,面部外形效果良好.结论Le-FortⅠ型切开分块截骨联合正畸术矫治严重牙颌面畸形,能提高整复和正畸矫治效果,缩短术前术后正畸时间,尤其对矫治伴有不规则的上颌牙弓畸形是一种可行、安全、有效、快捷的方法。
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