ProTaper??????????е???????????????η??????Ч??????

目的评价ProTaper机用镍钛锉用于根管治疗术一次法的临床效果。方法选择2008年7月至2010年7月广州医学院第一附属医院口腔科就诊患者206例(206颗患牙),随机分为两组。试验组的106颗患牙用ProTaper机用镍钛锉预备根管,对照组的100颗患牙用不锈钢K型锉预备根管,两组均以常规侧方加压法进行根管充填。拍摄牙片以了解根管数目形态、确定根管工作长度及判断治疗效果,并观察根管预备及充填后1～2周的术后反应。结果试验组患牙根管充填成功率(88.7%)高于对照组患牙(64.0%),试验组患牙根管预备及充填术后急性反应发生率(1.9%)明显低于对照组(14.0%),差异均有统计学意义(P<0.05)。结论 ProTaper机用镍钛锉用于根管治疗术一次法的根管充填成功率较高,且能明显减少术后根尖不良反应的发生,近期疗效可靠。

Clinical analysis of one-visit root canal therapy by ProTaper nickel-titanium instrument

Objective To evaluate clinical effects of one-visit root canal therapy by ProTaper nickel-titanium instrument.Methods A total of 206 teeth of 206 patients requiring root canal therapy in the study were divided into two groups randomly：106 teeth were instrumented by ProTaper nickel-titanium instrument in the test,and 100 teeth were instrumented by stainless steel K-files for control.All teeth were obturated with lateral condensation method.The efficiency of preparation and obturation was analyzed with digital radiographs before,during and after operation.The occurrence of pain in 14 days after treatment was recorded.Results The rate of satisfactory radiographical results of the test group was 88.7%,which was significantly higher than 64% of the control（P〈0.05）.The acute reaction rate was 1.9%,which was significantly lower than 14% of the control（P〈0.05）.Conclusion ProTaper nickel-titanium instrument can reduce the rate of acute reaction in one-visit root canal therapy and has a reliable result of root canal filling in short period.