title: [Effect on preparing curved artificial root canal with five handle endodontic instruments II comparision of shaping ability]
abstract: OBJECTIVE:To compared the shaping ability of five handle endodontic instruments. METHODS: The canal shape of prepared artificial root canals with five handle endodontic instruments were observed by light-microscope. RESULTS: Apical zips,elbows and perforations were not found. Ledges occurred in speciments of K-Flex group and they were relating to resinous plugs.The apical transportatins were relating to resinous plugs.The apical transportations of K-Flex group and H file group are much greater than other groups. CONCLUSION: Unifile or K file is first choice to prepare curved artificial root canals with routine preparation technique by comprehensive evaluaion of the cutting ability and shaping ability of five handle endodontic instruments.
authors.affiliation: Department of Endodontics,School of Stomatology,Shanghai Second Medical University. Shanghai 200011,China.
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Zhu
authors.forename: W W
authors.initials: WW
authors.lastname: Xia
authors.forename: X Y
authors.initials: XY
authors.lastname: Wang