根管截根术合并固定修复的临床疗效观察

Observation of the medical treatment on combination of fixation and reparation of root amputation

目的探讨根管外科，如牙半切术、截根术后与邻牙联合固定修复的临床疗效，为该治疗方法进一步应用提供临床依据。方法选择50例符合牙半切术或截根术适应证的患者，将拟保留残根完善的根管治疗银汞充填后，局部麻醉下施行牙半切术或截根术，2～3个月后行固定修复，利用余留冠根与有牙体缺损的邻牙进行联合固定修复术，追踪观察1—3年观察疗效。结果牙半切除术或截根术后余留牙冠根与有牙体缺损的邻牙进行联合固定修复疗效显著，咀嚼力好，易于清洁，术后并发的牙周症状也较少。结论能通过根管外科牙半切除术或截根术而保留的后牙不能轻易拔除，应该考虑与邻牙施行联冠修复术，固定桥对余留牙根有固定保护作用，并且提高咀嚼能力。

Objective To discuss endodontic surgery, such as the medical treatment effect of the fixation and reparation of tooth after root amputation and hemisection and prepare and provide medical basis for further application of the treatment. Methods Choosing fifty patients with hemisection or extirpating of root of tooth. After filling out the remaining root of tooth with silver and mercury, then make the operations of cutting tooth or extirpation of root of tooth in the condition of local anesthesia. For two to three months after the operation, on the basis of the remaining root of tooth and next tooth with some body deformities, to make the operation of the united fixation and reparation. Then continue to observe the treatment effect for two to three months. Results It has a good effective treatment on the united fixation and reparation of the remaining root of tooth united with next tooth with some body deformities after the operations of root amputation and the hemisection. The patients＇ chewing strength is strong and it is easy to clean and less to get local anesthesia which is often occurred after the operations. Conclusions Molars remained after hemisection of tooth or root amputation cannot be easily extirpated, so we may consider to made the operations of united fixation and reparation with next tooth. The fixed bridge has fixing and protection functions to the remaining root of tooth and can improve chewing power.