活动矫正器在牵引上前牙龈下断根的临床应用研究  

Clinical application of active orthotic devices in traction of upper anterior subgingival residual roots

作　　者：丁海正 胡华 

机构地区：[1]江苏省宜兴市牙病防治所正畸科,宜兴214200 [2]江苏省宜兴市牙病防治所牙周科,宜兴214200

出　　处：《口腔医学》2013年第9期587-589,共3页Stomatology

摘　　要：目的探讨活动矫正器在牵引上前牙龈下断根的临床应用。方法上前牙龈下断根经根管治疗后,上颌取模制作活动矫正器牵引龈下断根。在断根近远中用直径为0.8 mm的不锈钢丝弯制牵引支架,牵引支架放置在断根需要牵引至的位置,在水平向与邻牙近中面相接触,在垂直向与断根牙体长轴方向一致。对6例共10颗上前牙龈下断根采用活动矫正器牙合向牵引,使断面暴露至龈上5.0 mm或平齐龈缘。结果 6例共10颗上前牙龈下断根牵引出3.0～5.0 mm,经冠修复后除1颗患牙12个月后复诊有Ⅰ度松动外,其余5例共9颗患牙都取得了满意的治疗效果。结论活动矫正器是牵引上前牙龈下断根的一种简便易行的方法。Objective To discuss the clinical application of the removable appliances in traction of subgingival root extrusion of an- terior teeth. Methods 10 subgingival roots of anterior teeth with crown - root fracture of 6 cases were selected. After complete root ca- nal therapy had been finished, the traction was implemented with maxillary removable appliances. The scaffolds of the removable appli- ances were bended with the 0.8 mm stainless steel wires,which were against the mesial surfaces of the adjacent teeth and parallel to the long axes of the subgingival roots. Finally, sections were exposed at the position 5.0 mm above or flush with the gingival margins. Re- sults All the 10 roots were 3.0-5.0 mm above the gingival margin. After crown restoration, 1 root was loose by I ° , and the other 9 roots were satisfactory 12 months later. Conclusions Active orthotic devices are simple and feasible for traction of subgingival root ex- trusion of anterior teeth.

关 键 词：活动矫正器 正畸牵引 龈下断根 

分 类 号：R783.5[医药卫生—口腔医学]