前牙外伤性冠折与正畸矫治相关性的临床研究

Clinical study of restoration of fractured anterior teeth by orthodontic treatment

目的:探讨在正畸治疗中遇到的前牙因外伤所致的不同程度的冠折,对其处理原则和治疗方法。方法病例来源于西安第四军医大学口腔医院正畸科近3年门诊共58例,68个牙。依据冠折的部位划分为3组,第一组冠折1/4,正畸拉长即可达到满意的疗效,少数需配合龈切;第二组冠折1/2左右,采用氢氧化钙间接或直接盖髓术,之后进行牙冠修复;第三组牙冠大部折断,有的甚至达龈下。先施行根管治疗术后临时桩冠修复。结果:3组病人经过正畸治疗或综合治疗,均能满足正畸在牙冠正确位置粘贴托槽实施正畸矫治。从美学的观点,也达到了预期的效果。结论:前牙外伤所致的不同程度的冠折,给正畸治疗带来了一定的麻烦。经综合治疗后,既能满足正畸矫治贴托槽的需要,又达到了一定的美观效果。

AIM： To discuss the different method of orthodontic treatment of fractured anterior teeth.METHODS： The data of 58 cases were collected from the department of orthodontics,school of stomatology,the fourth military medical university.Sixty-eight fractured incisors were divided into three groups based on the extent of fracture.In group A（with 1/4 crown fracture） teeth were extruded by orthodontic treatment with partial gingival cut in some cases.In group B（with about 1/2 crown fracture） teeth were directly or indirectly covered with Ca（OH）2 and then the fractured teeth were restored.In group C（with almost no crown left） the teeth were treated by root canal treatment（RCT）.Then posts were placed in teeth and the crowns were restored temporarily.RESULTS： To fractured incisors after treated by various restorative methods,the brackets can be easily bound to the crown at the correct position.Not only the orthodontic treatment can be done smoothly,but certain esthetic effects could be obtained.CONCLUSION： The orthodontic treatment of fractured anterior teeth.May be complicated.After use of comprehensive restorative treatment methods,the orthodontists can bind the brackets easily and certain esthetic effects could be achieved.