桩冠修复牙齿根管再治疗临床病例分析

Clinical analysis of root canal re-treatment used on post-core restored teeth

目的分析桩冠修复牙齿根管治疗失败的再治疗策略,探讨取桩和不取桩做根管再治疗的临床可行性。方法22颗根管治疗桩冠修复牙齿发生根尖周炎,经过治疗决策分析,18颗患牙去除冠和桩做根管再治疗,3颗患牙去除冠、穿通桩做根管再治疗,1颗患牙穿通桩冠做根管再治疗,择期修复,观察疗效。结果观察12个月,22颗牙齿根管再治疗全部成功,拆除修复体或穿通修复体治疗过程均未影响患牙再修复。结论桩冠修复牙齿发生根尖周炎需综合分析多方面因素制定治疗方案;取出桩核和穿通桩核做根管再治疗都是临床可行的治疗方法。

Objective To analyze the re-treatment strategy of post-core restored teeth with failed root canal treatments,and to explore the clinical feasibility of root canal retreatment with or without removing the post-core systems.Methods A total of 22 teeth with root canal treatments and post-core crown restorations were diagnosed with periapical periodontitis.On account of treatment strategy analysis,18 teeth were re-treated by removing the crowns and post-cores.3 teeth were re-treated by removing the crowns and penetrating the post-cores while 1 tooth by penetrating both crown and post-core.Elective restoration and observation of efficacy were then carried out.Results After 12 months of observation,all 22 teeth were successfully re-treated.The treatment process of removing or penetrating the prosthesis didn’t affect the secondary restoration of the teeth.Conclusion The treatment of teeth with periapical periodontitis after post-core crown restorations requires comprehensive analysis of various factors to develop a treatment project.Removing and penetrating the post-cores for root canal retreatment are both clinically feasible treatment methods.