在临床工作中经常遇到年轻恒牙AngleⅡ亚类的错始患者，为了使患者上下颌磨牙达到！类关系，并解除前牙拥挤，常需要不对称的远中移动上颌磨牙。现将我们的做法做一介绍。方法：面弓加口外牵引同时配合滑动杆进行！类颌间牵引。1．采用成品通用型口外弓，在患侧第一磨牙近中放 In clinical work often encounter the young permanent teeth Angle Ⅱ subclass of the wrong patients, in order to make patients with maxillary molar teeth! Class relations, and relieve crowding of the anterior teeth, often require asymmetric distal movement maxillary molars. Now we do an introduction to the practice. Methods: face bow plus mouth traction at the same time with the sliding rod! Class of intermaxillary traction. 1. The use of general-purpose products outside the bow, near the first molar in the ipsilateral release