2010
DOI: 10.1016/j.joen.2010.06.002
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Design Improvement and Failure Reduction of Endodontic Files through Finite Element Analysis: Application to V-Taper File Designs

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Cited by 48 publications
(39 citation statements)
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“…He and Ni (21) recently also used finite element analysis for a parametric study to evaluate the effects of helix angle, taper, and flute length on bending and torsion characteristics for various NiTi rotary file designs. Although they did not compare the cross-sectional differences, they suggested that such differences would be important factors in the stiffness and flexibility of files.…”
Section: Discussionmentioning
confidence: 99%
“…He and Ni (21) recently also used finite element analysis for a parametric study to evaluate the effects of helix angle, taper, and flute length on bending and torsion characteristics for various NiTi rotary file designs. Although they did not compare the cross-sectional differences, they suggested that such differences would be important factors in the stiffness and flexibility of files.…”
Section: Discussionmentioning
confidence: 99%
“…If the stress gradient is low, a larger area will be predisposed to fatigue initiation, and thus more variation can be expected in Figure 2E. A lower stress gradient can be expected for stiffer files, such as ProTaper (13,31). To determine the accuracy of the FEA estimates, it may therefore be more important to investigate how close the stress values at the fracture location were to the maximum stresses than the precise location of the fatigue fracture.…”
Section: Discussionmentioning
confidence: 99%
“…This fact may help explain the findings of the present study, where instruments F2 and F3 presented the lowest flexibility values among all ProTaper Universal instruments. Improved properties are achieved by streamlining geometric characteristics (7), and this may explain the similar flexibility of instruments F4, F5 and F1.…”
Section: Discussionmentioning
confidence: 99%
“…The mechanical properties of endodontic instruments, like flexibility, are affected by several factors, such as caliber, conicity, design, chemical composition of the metallic alloy and thermomechanical processes applied during manufacturing (1)(2)(3)(4)(5)(6)(7). In addition, the form of the cross section affects the stress distribution patterns on the instrument and the behavior of the instrument when submitted to flexural and torsional forces (4).…”
Section: Introductionmentioning
confidence: 99%
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