严重的安氏第Ⅱ类第2分类错(牙合),覆(牙合)很深,常常合并严重的上切牙内倾。一些学者认为这种错(牙合)只能用固定矫治器矫治。我们用活动矫治器,采用成对升高磨牙的方法,成功地矫治1例严重深覆(牙合),现报告如下患者张××,女,12岁。模型号82-186。患者因上下前牙咬及对颌龈组织,经常引起牙龈 Serious class Ⅱ Division 2 malocclusion (Occlusal), covered occlusion (deep), often with severe incisors incontinence. Some scholars believe that such a mistake (occlusion) can only be treated with a fixed appliance. We use active appliance, the method of raising molars in pairs, successful treatment of a case of severe deep over (occlusion), are now reported as Zhang × ×, female, 12 years old. Model Number 82-186. Patients due to the upper and lower anterior bite and jaw gingival tissue, often causing gums