【摘要】 目的利用取出法与旁路法处理根管内分离器械并对其成功率进行比较分析。方法选取因牙周病和正畸治疗而拔除的离体牙60例,镍钛器械距根尖部2 mm处折断于根管中下段,一组为利用显微超声技术处理分离器械(取出分离器械),另一组利用旁路法建立根管通路(保留分离器械),分别记录成功率并进行比较。结果利用显微超声取出法成功率为63.33%,利用旁路法建立根管通路的成功率为66.67%,二者间无统计学差异。结论折断于根管内的分离器械,需要对其操作的可行性与风险性进行评估后再选择处理方式。更多还原

【Abstract】 Objective Compare and analyzed the success rate of using the removal method and the bypass method in the root canal separated instrument. Methods Sixty cases of isolated teeth were selected for periodontal disease and orthodontic treatment, nickel-titanium instruments 2 cm away from the root tip at the root canal in the lower section, one used micro-ultrosonic techniques to deal with the separated instrument(remove the separated instrument), another established a root canal access using a bypass method(keep the separated instrument), record and compared the success rate separately. Results The success rate of using microultrosonic techniques to remove the separated instrument was 63%, the success rate of established a root canal access using a bypass method was 66%, no significant difference between them. Conclusion The separated instrument who broken in the feasibility and risk of its operation before proceeding with the choice of treatment.更多还原