K3与手用镍钛锉在根管治疗中的应用研究

The study of application of K3 and hand nickel titanium file in root canal therapy

目的评价K3与手用镍钛锉在根管治疗术中应用后临床近远期疗效。方法选择患有牙髓炎和慢性根尖周炎的365颗磨牙,随机分为K3机用镍钛锉组183颗牙(K3组)和手用镍钛锉组182颗牙(H组)。分别使用K3机用镍钛锉和手用镍钛锉根管预备后,封氢氧化钙,符合根充条件时,冷侧压充填法根管充填,观察记录根管预备时间,术后痛肿反应,1年后临床疗效。结果 K3组根管预备时间、术后反应明显少于H组(P<0.01);1年后两组根管治疗疗效差异无统计学意义(P>0.05)。结论 K3机用镍钛锉预备根管具有效率高,成形能力强,根充效果好,明显减少术后疼痛等优点;是一种理想的根管预备器械。

Objective：To evaluate the clinical short and long term effect influence of K3 and hand nickel titanium file after root canal therapy.Methods：A total of 365 molar teeth with pulpitis or chronic periapical periodontitis were selected and divided into two groups,one prepared by K3（K3 group）and the other by hand nickel titanium file（H group）.They were prepaired with K3 and hand nickel titanium file,sealed with calcium hydroxide,filled with cold lateral condensation,observe and record the time of root canal therapy,postoperative pain and swelling reaction,the clinical curative effect after 1 years.Results：The time of root canal therapy of K3 group and postoperative reaction was significantly less than H group,there were no statistical difference in root canal therapy after 1 years.Conclusion：The root canal therapy of K3 has the advantage of efficient,better forming ability,better root canal filling effect and significantly reduced postoperative pain;and is an ideal instrument in root canal preparation.