片段弓矫治技术在前牙外伤中的应用

本文探讨片段弓矫治技术在前牙外伤中的应用效果。利用方丝弓矫治器对上前牙外伤68例患者（共89颗外伤牙，其中29颗松动Ⅱ度，51颗松动Ⅲ度，9颗完全脱位）进行复位、固定，并在治疗结束后半年、一年进行随诊观察。一年后固定成功率达到90％以上，患牙及颌骨复位精确，咬合关系恢复良好，并发症少。应用片段弓矫治技术治疗前牙外伤可获得良好的疗效，该技术安全可靠。

The Application of Edgewise Segmental Arch Technique in Anterior Tooth Injury

To evaluate the clinical effect of Edgewise segmental arch in anterior tooth fixation .68 patients with 89 traumatic anterior teeth were treated ,using Edgewise segmental arch to fix these teeth .Follow-up and observations on these cases have been carried out respectively after half a year as well as a whole year .With Edgewise segmental arch technique to fix the anterior teeth ,proper alignments of the impacted teeth and jaws had both been achieved ;the standard occlusion relationship has been regained and few complications observed ,in a word ,90% of the cases have the impacted teeth fixed successfully .Edgewise segmental arch is reliable and effective for tooth fixing .