机用ProTaper镍钛根管锉在根管治疗中的临床应用

Clinical application of machine used ProTaper nickel-titanium root canal file in root canal treatment

目的观察机用ProTaper镍钛根管锉在根管治疗中的应用效果,临床操作的时间,术后的疼痛反应等情况。方法选择2011年3月～2012年5月,到本院口腔科就诊,需行根管治疗的患牙256颗,分成2组,其中试验组159颗患牙,采用机用ProTaper镍钛根管锉,冠向下法进行根管预备;对照组97颗患牙,用ISO标准手用不锈钢K锉,采用传统逐步后退法进行根管预备,两组均使用EDTA凝胶疏通,2.5%次氯酸钠溶液冲洗,法国必兰根充糊剂+牙胶尖冷侧压法根管充填(机用镍钛组采用大锥度牙胶尖)。对比临床操作的时间,观察根管治疗术后反应情况。结果试验组根管预备平均操作时间(7.20±1.75)min,明显少于对照组(14.50±4.75)min;术后3d患牙疼痛发生率,试验组为3.8%,明显低于对照组的13.4%(P<0.01)。结论机用ProTaper镍钛根管锉预备根管,根管成型锥度好,根充效果好,根尖疼痛反应小,省时并有良好的疗效,值得临床推广。

Objective To observe the application effect,clinical operative time and postoperative pain response of the machine used ProTaper nickel-titanium root canal file in the root canal treatment. Methods 256 teeth needing root canal treatment in our hospital from March 2011 to May 2012 were divided into 2 groups, with 159 teeth in the experimental group and 97 teeth in the control group. The experimental group received the protaper nickel-titanium root canal file and used the crown-down method for root canal preparation while the control group received the ISO standard hand used stainless steel K-file and used the traditional step-back technique for root canal preparation. Both groups used EDTA gel dredge,2.5% sodium hypochlorite solution flushing, France laingen filling paste ＋ gutta percha point cold side pressure root canal filling （machine used nickel-titanium group used large taper gutta percha point）. The clinical operative time was compared and the postoperative reactions were observed. Results The average operative time of root canal preparation was （7.20 ± 1.75）minutes in the experimental group,which was significantly shorter than the （14.50 ± 4.75）minutes in the control group. The incidence of tooth pain 3 days after treatment was 3.8% in the experimental group,which was significantly lower than the 13.4% of the control group（P 〈 0.01）. Conclusion The application of ProTaper nickel-titanium root canal files in the preparation of root canals shows good root canal taper,good root canal filling effect and little root tip pain response,saves time and has good curative effect,thereby worthy of clinical promotion.