The Three Dimension Finite element Analysis of the Torque Mechanical Properties with Tip-edge Appliance
YANG Qinpei
WEI Dailun
WU Xue
QU YANG
HUANG Yue
Abstract：Using the finite element method to establish the upper front teeth area of Tip-Edge brackets and the arch wire three-dimensional finite element model.To research the torque mechanical properties of different inclination of Tip-Edge brackets.The model of different inclination of maxillary incisor Tip-Edge brackets and different material arch wire by Using Pro/E Wildfire5.0 software were established.The model was assembled and lead to the MSC.Marc.Mentat2005R3 software, the torque load was simulated and the torque moment was calculated, and the curves of torque moment/torque angle was drawn.Results showed that (1)when maxillary incisor Tip-Edge bracket distal tiping 0°, the maximum torque moment was 22.37 Nmm.When maxillary incisor Tip-Edge bracket distal tiping 25°, the maximum torque moment was 8.93 Nmm.(2)When the inclination of the bracket were the same, the maximum torque moment of stainless steel arch wire was 2 times bigger than that of the Beta-titanium wire's.With the decrease of inclination of the bracket, the expression of the maximum torque moment increases gradually and the torque mechanical properties increases.The torque mechanical properties is determined by the horizontal distance and vertical distance between the two central ridge of the bracket.The arch wire stress on both sides of the bracket is distributed asymmetry with the decrease of inclination when the preset torque expressioned.
Keywords：Tip-Edge applianceTip-Edge plus applianceDifferential straight wire techniqueTorqueThree dimension finite element method
Publication Date：2017-01-01
Online Publishing Date：2026-09-11(First online date of this platform, not the publication date of the document)
Pages：5( 28-32 )