Shaping ability of two kinematics rotary nickel-titanium systems evaluated by using CBCT
ZHAO Li-qin
CHEN Qiao-er
Abstract：AIM:To evaluate the shaping ability of Twisted File(TF)rotary system and ProTaper by CBCT. METHODS:60 single root canals in 41 extracted teeth were divided into 2 groups according to the canal curvature:0°~15°group and 16°~35°group.Then,each group was divided into two subsets and prepared by TF and ProTaper respectively.Canals were scanned by CBCT scanner before and after instrumentation.The width of dentine removed was measured at three points (2 mm,4 mm and 6 mm to root tip).Incidence of canal aberrations was recorded and an-alyzed statistically using T-test.RESULTS:No significant difference was found between TF and ProTaper instruments (P >0.05).Centralizing ability of the 2 systems was better when canal curvature was between 0°and 15°than that between 16°and 35°(P <0.05).CONCLUSION:Under the conditions of this study,both TF and ProTaper NiTi rotary systems can keep satisfactory preservation of the original canal shape.
Keywords：CBCTnickel-titanium instrumentshaping ability
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 110-112,83 )