Evaluation of preparation of curved root canals using hand-used ProTaper
10.3760/cma.j.issn.1002-0098.2009.05.003
- VernacularTitle:手用ProTaper器械预备弯曲根管的研究
- Author:
Min NIE
1
;
Xin-Chen ZHAO
;
Bin PENG
;
Ming-Wen FAN
;
Zhuan BIAN
Author Information
1. 武汉大学口腔医学院
- Keywords:
Root canal preparation;
Dental high-speed equipment;
Dental pulp cavity
- From:
Chinese Journal of Stomatology
2009;44(5):262-265
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the shaping ability of hand-used ProTaper on curved canals using Endodontic Cube.Methods Fifty-four curved root canals in vitro were selected and dirided into three groups according to the Curved degree(α),group A:0°≤α＜25°,group B:25°≤α＜40°,group C:40°≤α＜55°.Endodontic Cube was assembled.and each sample was sectioned perpendicular to the axis of the tooth into four sections with Isomet-Buhler in low speed.Then the root canals were prepared with hand-used ProTaper.Before and after shaping,photograph of all the sections were taken under a stereomicroscope.Statistical analyses were performed.Results The dentin cutting quantity of the whole canal prepared with ProTaper in group B and C Was larger than that of group A.The deviation distance of the whole canal prepared by ProTaper in group C was significantly larger than that in group A,and the deviation distance in middle portion larger than that in group B.The maintaining ability in the middle portion ofgroup C by ProTaper wag worse than that of group A and B.Condusious The curvature of root canal mayincreasethe cutting quantity of the dentin and reduce the ability of remaining original canal shape prepared by ProTaper.
