Conclusion Mandibular width after bilateral sagittal split ramus osteotomy is a little bigger than before surgery, but this change has little influence on face.

结论①下颌骨宽度在双侧下颌升支矢状劈开截骨术后较术前有轻微增大，但对容貌没有大的影响。

youdao

The two most commonly used surgical techniques to setback a prognathic mandible include the bilateral sagittal split osteotomy and the vertical ramus osteotomy.

二种最普遍使用正颚手术方法来改善下颚骨前突症的方法是双侧矢向面骨切开术及垂直下颚枝骨切开术。

youdao