【摘要】 目的 探讨前牙急性根尖周炎患者应用根管治疗一次法是否优于多次治疗。方法 随机将140 例急性根尖周炎患者分为两组，每组70 例，分别行根管一次法治疗和多次治疗。观察比较两组患者术后1 d 和术后5 d 并发症情况及术后1年临床和X线检查结果。结果 一次性根管治疗术后1 d 并发症显著高于多次疗法(P< 0.05)，术后5 d 疗效显著好于多次疗法(P< 0.05)，术后1年两组间疗效无显著性差异(P> 0.05) 。结论 对于前牙急性根尖周炎患者可选择一次性根管治疗和多次疗法，但应用一次性根管治疗应慎重。
【关键词】 急性根尖周炎；根管治疗；并发症；一次法；多次疗法
Abstract： Objective To explore if one time root canal therapy has a better effectiveness than conventional root canal therapy in treating acute periapical periodontitis of anterior teeth. Methods A total of 140 patients with acute periapical periodontitis of anterior teeth were randomly divided into two groups. Each group had 70 patients in it. They were treated respectively by one time root canal therapy and conventional root canal therapy. The complications were observed in the patients after one day’s and five day’s treatment. Their therapeutic effects were compared according to clinical symptoms and Xray examination one year after treatment. Results The incidence of complication of one time root canal therapy was higher than that of conventional root canal therapy after one day’s tre
