主弓丝套推簧与镍钛圆丝联合应用矫治牙列拥挤

目的评价主弓丝套推簧与镍钛圆丝联合应用矫治牙列拥挤的临床疗效。方法随机选择恒牙牙列轻、中度拥挤病例13例，年龄12～28岁，平均16岁，先初步排齐牙列至能将0．014″～0．016″澳丝或不锈钢丝放入托槽，在拥挤区放置镍钛推簧，每2～3周复诊一次。间隙开辟后拥挤区再放置镍钛圆丝，将拥挤区移位的牙拉向正常位置。结果所有病例在5周到12周开辟出足够间隙，拥挤解除。之后1～3个月镍钛圆丝将拥挤区移位的牙拉至正常位置。结论主弓丝套推簧与镍钛圆丝联合应用为轻、中度牙列拥挤的矫治提供了一种有效而简单方法。

Clinical Application of Ni-Ti Open Coil Spring with Ni-Ti Archwire Correcting Teeth' Crowding

Objective To evaluate the clinical effects of Ni-Ti open coil spring with Ni-Ti archwire correcting teeth＇ crowding. Methods 13 cases with mild or medium teeth＇ crowding were randomly selected, and the Ni-Ti open coil springs were placed in the area of crowded teeth. After gaining enough space, Ni-Ti archwire was placed again in the area of crowded teeth and the teeth in anormal position were moved. Results After the peried of 5 - 12 weeks, the Ni-Ti open coil springs were placed, enough space was obtained; After the peried of 1 - 3 months, the Ni-Ti archwire was placed again, and the teeth in anormal position were moved into normal position. Conclusion Making use of Ni-Ti open coil spring with Ni-Ti archwire correcting teeth＇ crowding is an effective method.