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获得协调的软硬组织面部比例关系是外科正畸矫治牙—面畸形的主要目的之一。针对外科正畸不同的术式选择合适的测量项目,敏感地反映病人的畸形以及准确地预测病人术后的软组织形态,对于取得满意的矫治效果是非常关键的。Bell和Dann指出在上下颌前部的手术和颏成形术中,上切牙与上唇红部的位移比是1:0.7;骨性颏部与软组织颏部的位移比是1:0.6。Lines在1974年总结提出上唇随上切
It is one of the main purposes of orthodontic orthodontics to correct facial and facial deformity by obtaining the coordinated facial and soft tissue ratio. Selecting suitable measurement items according to different surgical orthodontics, sensitively reflecting the patient's deformity and accurately predicting the postoperative soft tissue morphology are very important for obtaining a satisfactory orthodontic effect. Bell and Dann pointed out that the ratio of displacement of the incisors to the upper lip red is 1: 0.7 in the maxillary and mandibular surgery and genioplasty, and the displacement ratio of the bony chin to the soft tissue chin is 1: 0.6. Lines summed up in 1974 with the upper lip on the cut