对于外科矫治下颌前突后,上下前牙的稳定性问题,以往的研究结果尚不一致。多数学者认为:术后,下颌是有向前移位的。本研究的目的是比较术前、术后六个月和术后两年牙齿的位置,以确定颌间固定去除后,最初六个月有否牙齿移动,这些移动是否稳定或继续变化直到术后两年。本材料包括37 For surgical correction of mandibular protrusion, the stability of the upper and lower anterior teeth, the previous findings are not the same. Most scholars believe that: After surgery, the mandible is a forward shift. The purpose of this study was to compare the position of teeth before surgery, six months after surgery, and two years after surgery to determine whether the teeth moved during the first six months after the intermaxillary fixation was removed, whether these movements were stable or continued until after surgery Two years. This material includes 37