Comparison of the effect of three nickel-titanium instruments on molar root canal curvature

doi:10.19439/j.sjos.2018.04.014

Abstract

Abstract: PURPOSE: To evaluate the influence of ProTaper, Mtwo, and M3 nickel-titanium instruments on root canal curvature during root canal preparation. METHODS: Forty-five molars with root canal therapy were randomly divided into 3 groups. The root canals were prepared by using ProTaper, Mtwo and M3 nickel-titanium instruments. The qualified rate and change of root canal curvature before and after preparation were compared using SPSS22.0 software package. RESULTS: There was no significant difference between the three groups in the qualification rate after root canal preparation and the effect of different preparatory devices on root canal curvature(P>0.05), but there was significant difference in the change of root canal curvature before and after preparation (P<0.05). CONCLUSIONS: The three kinds of nickel-titanium instruments can effectively form root canal and have no difference in root canal curvature, but the curvature of root canal is changed after preparation. It is important to prevent complications during curved root canal preparation.

Key words: Root canal curvature, Shaping ability, ProTaper, Mtwo, M3

CLC Number:

R781

MENG Dan-jie, YAO Li-li, LI Mao. Comparison of the effect of three nickel-titanium instruments on molar root canal curvature[J]. Shanghai Journal of Stomatology, 2018, 27(4): 407-410.

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