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《Journal of Practical Stomatology》 2009-05
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Shaping effects of hand-used ProTaper files in S-shaped simulated root canals

XIA Lingyun1,CHEN Xinmei2,LUO Zhixiao1,LENG Weidong1,YANG Guobiao3.1.Department of Stomatology,Taihe Affiliated Hospital,Yunyang Medical College,Hubei Shiyan 442000,China;2.Department of Endodontics,West China College of Stomatology,Sichuan University,Chengdu 610041,China;3.The Second People Hospital,Zhuhai 519020,China  
Objective:To compare the effects of different size files of hand-used ProTaper on the canal morphology in preparation of S-shaped root canal.Methods:Fifteen S-shaped simulated resin root canals were selected.Every root canal was prepared by every file of hand-used ProTaper following the manufacturer instruction.Took and saved the images of canals prepared by S1,S2,F1,F2 and F3,which were divided into group S1,S2,F1,F2 and F3.Compared the influence of every file of ProTaper on the canal morphology in five aspects:smoothness of the root canal wall,apical stop,horizontal or longitudinal grooves,flow and taper.Results:Smoothness of coronal half of the canal was good after prepared by every file of ProTaper,while the smoothness of the apical half of the canal,canal flow and taper became poor,apical stop became poor defined,horizontal or longitudinal grooves presented gradually following the ordinal preparation with ProTaper files.Conclusion:The canal morphology became poor after prepared by F1 file,and F2 and F3 file make worse morphology.
【CateGory Index】: R781.05
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