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在临床工作中，利用三联别针簧矫治器矫治上中切牙外翻38例，经过半年及两年的随访观察，效果稳定，无一例复发现报告如下．1 资料与方法38例上中切牙外翻的错颌畸形患者中，年龄9～17岁，平均年龄11．5岁．男15例，女23例，平均疗程4．5个月．三联别针簧矫治器是一种半固定矫
In clinical work, the use of triple pin coil appliance orthodontic correction of 38 cases, after six months and two years of follow-up observation, the effect is stable, no case of recurrent findings are as follows. 1 Materials and Methods 38 cases of maxillary incisor valgus malocular deformity patients, aged 9 to 17 years, mean age 11.5 years. 15 males and 23 females, the average course of 4.5 months. Triple pin spring appliance is a semi-fixed correction