安氏Ⅱ类Ⅰ分类错牙合，一般采用拔除上下颌第一双尖牙或上颌第一双尖牙和下第二双尖牙的方法进行矫治［１，２］。但在临床工作中，经常遇到一些成人患者，磨牙关系为轻度远中或完全远中，且牙槽骨均有不同程度的吸收。如果拔除下颌第一双尖牙，下磨牙不易前移为中性磨牙... Class Ⅱ Division Ⅰ malocclusion, the general use of the removal of the first maxillary maxillary maxilla or the maxillary first bicuspid and the second pair of canines for correction [1,2]. However, in clinical work, often encountered in some adult patients, the relationship between molars mild or completely distal, and alveolar bone have different degrees of absorption. If the removal of the first pair of mandibular first canine, the lower molars is not easy to move forward for the neutral molars ...