ProTaper机用镍钛锉根管预备的临床效果分析

目的 评价ProTaper机用镍钛锉根管预备的临床效果。方法 选择300颗患牙（638个根管）随机分为ProTaper组和K锉组，分别用ProTaper机用镍钛锉和K锉进行根管预备，采用χ2检验比较根管预备后的疼痛反应、根管充填效果及器械分离情况。结果 ProTaper组根管预备后疼痛发生率为6.00%，较K锉组的根管预备后疼痛发生率（26.67%）少（P<0.01），ProTaper组根管恰填率为93.77%，较K锉组（88.64%）高（P<0.05），两组间的器械分离则无统计学差异（P＞0.05）。结论 ProTaper机用镍钛锉能有效降低根管预备后疼痛的发生和提高根管充填质量，而且较为安全。

Clinical evaluation of ProTaper NiTi instruments in root canal preparation

Objective To assess the clinical effects of ProTaper NiTi instruments in root canal preparation. Methods A total of 300 teeth which needed endodontic treatment were selected and randomly divided into 2 groups. The root canals were prepared with Pro- Taper NiTi instruments in ProTaper group and with K-files in K-files group respectively. The incidence of endodontic interappointment emergences （ EIAE）, the effects of canal obturation and incidence of the instrument fracture were compared by x2 test. Results The incidence of EIAE （6.00%） in ProTaper group were significantly lower than that in the K-files group （26.67%） （ P 〈 0.01 ）. The rate of adequate root canal filling （93.77%） in ProTaper group were significantly higher than that in K-files group （88.64%） （P 〈 0.05）. There was no significant difference in the incidence of instrument fracture between ProTaper group and K-files group （P 〈 0.05 ）. Conclusions Using ProTaper NiTi instruments can reduce the incidence of EIAE and improve the effects of canal obturation. It is safe to use ProTaper NiTi instruments in root canal therapy.