两种根管预备方法引发根管治疗期间疼痛的观察

The clinical evaluation of postoperative pain using two root canal preparaed methods

目的观察分析两种根管预备方法术后疼痛发生情况,并探讨引发根管治疗期间疼痛的相关因素。方法临床诊断为急、慢性牙髓炎,慢性根尖周炎,牙髓坏死的前磨牙分为ProTaper手用锉根管预备组60例和不锈钢K锉根管预备组61例,采用患者自评疼痛标准及临床评定疼痛标准分析根管预备后疼痛的发生。结果患者术后自评疼痛率ProTaper手用锉根管预备组为36.67%,不锈钢K锉根管预备组为55.74%,差异有统计学意义(P<0.05);术后1周临床评定疼痛率Pro-Taper手用锉根管预备组为1.67%,不锈钢K锉根管预备组为11.48%,差异有统计学意义(P<0.05)。结论ProTaper手用锉根管预备组采用Crown-down技术进行根管预备术后疼痛发生率低于不锈钢K锉采用逐步后退法。

Objective To clinically evaluate the postoperative painlevel of root canal preparation using two methods. Methods 60 infected premolars were prepared by ProTaper file using crown - dowen technique and 61 infected premolars were prepared by K file using step - back technique. The main assesments included postoperative pain evaluated by patients and by clinical examination. Results There was statis- tically significance between the groups regarding pain after operation （Protaper groups 36.67%, K file groups 55.74%, P 〈 0.05） and clinical pain （Protaper groups 1.67%, K file groups 11.48%, P 〈 0.05）. Conclusions The postoperative painlevel is lower using ProTaper file than using K file.