两种镍钛器械预备后牙根管的临床效果分析

Clinical analysis of preparation effects with two types of nickel-titanium instruments in posterior root canals

目的 比较M3-Pro镍钛锉与ProTaper镍钛锉对后牙进行根管预备的临床效果。方法 选取牙髓炎或根尖周炎的患牙60颗,随机分为两组,每组91个根管,分别使用M3-Pro镍钛锉、ProTaper镍钛锉进行根管预备。1周后对符合充填指征的患牙行根管充填。比较两组根管预备时间、诊间疼痛率、器械分离发生率及根管恰填率。结果 M组和P组的单个根管预备时间分别为(5.53±0.40) min和(6.49±0.38) min,差异有统计学意义(P<0.05)。两组均未发生器械分离,诊间疼痛率和根管恰填率均差异无统计学意义(P>0.05)。结论 M3-Pro镍钛锉与ProTaper镍钛锉均能达到良好的根充效果,术后疼痛率与器械分离发生率低。M3-Pro镍钛锉工作效率更高,且有价格优势,值得在临床上推广使用。

【Objective】To compare the preparation effects by using M3-Pro and ProTaper nickel-titanium files in posterior root canals.【Methods】A total of 60 posterior teeth diagnosed as pulpitis or periapical periodontitis were randomly divided into 2 groups,with 91 root canals per group.Group M was treated with M3-Pro files and group P with ProTaper files.One week later,the root canals of affected teeth meeting the filling indication were filled.Single root canal preparation time,inter-appointment pain rate,instrument separation rate and perfect filling rate were compared.【Results】The single root canal preparation time in group M and group P was 5.53±0.40 min and 6.49±0.38 min respectively,and the difference was statistically significant(P<0.05).No instrument separation occurred.There were no significant differences between two groups in inter-appointment pain rate and perfect filling rate(P>0.05).【Conclusion】Both M3-Pro and ProTaper nickel-titanium files can achieve good root canal filling effects and have low incidence rate of inter-appointment pain and instrument separation.M3-Pro nickel-titanium files have higher working efficiency and a price advantage.In conclusion,M3-Pro nickel-titanium files are worth promoting in clinic.