材料与方法 从已完成的推上颌单尖牙向远中移位后进入牙列的矫治结束病例中,选用活动矫治器治疗的13例,年龄在13—15岁之间的女性患者,病因分析是遗传或替牙障碍,在3～5个月内结束治疗。磨牙关系,3例是远中(牙合),10例是中性(牙合)关系。1.全部为拔除上颌第一双尖牙后,推同侧的上颌单尖牙向远中进入拔牙间隙。2.一律使用颌内支抗,而无颌间及口外支抗。3.均使用双曲唇弓上焊弓簧的活动矫治器。 Materials and methods From the completed push the maxillary unicorn to the distal shift into the dentition after the end of the treatment, the use of active appliance treatment of 13 cases, aged 13-15 years old female patients, the etiology Is genetic or tooth disorder, in 3 to 5 months to end treatment. Molar relationship, 3 cases of distal (occlusion), 10 cases of neutral (occlusion) relationship. 1. All for the removal of the first maxillary first pair of canines, push the same side of the maxillary single canines to enter the tooth extraction gap. 2. Always use the jaw support without intermaxillary and oral support. 3. Both use the double bow lip welding bow spring activity appliance.