Tip-Edge矫治器转矩力学性能的三维有限元分析

发布时间：2018-05-06 10:19

本文选题：Tip-Edge托槽 + Tip-Edge　；参考：《生物医学工程研究》2017年01期

【摘要】：运用有限元法建立上颌前牙区带弓丝的Tip-Edge托槽三维有限元模型,研究Tip-Edge托槽不同倾斜度时转矩力学性能。用Pro/E Wildfire5.0软件建立不同倾斜度上中切牙Tip-Edge托槽及不同材质弓丝模型,装配模型并导入MSC.Marc.Mentat2005R3软件中模拟转矩加载,收集力矩值,绘制曲线图。结果表明:(1)上中切牙托槽向远中倾斜0°时,其转矩最大力矩值为22.37 Nmm;托槽倾斜25°时,其转矩最大力矩值为8.93 Nmm;(2)当托槽倾斜度相同时,不锈钢弓丝最大转矩力矩值为β-钛丝的2倍。随着托槽远中倾斜度的减小,其表达的最大转矩力矩值逐渐增大,转矩性能提高,其转矩性能主要由托槽两中央嵴间的水平距离和垂直距离决定。预置转矩表达时,托槽两侧的弓丝应力分布随着托槽远中倾斜度的减小变得不对称,这主要是由托槽两中央嵴间的水平距离决定。
[Abstract]:The three-dimensional finite element model of Tip-Edge bracket with arch wire in maxillary anterior teeth was established by finite element method. The torque mechanical properties of Tip-Edge bracket with different inclination were studied. The Pro/E Wildfire5.0 software was used to establish the Tip-Edge bracket model of the upper incisor with different inclination and different material. The assembly model was imported into the MSC.Marc.Mentat2005R3 software to simulate torque loading, the torque value was collected, and the curve was drawn. The results show that the maximum torque of the upper incisor bracket is 22.37 Nmm when the upper incisor is inclined to 0 掳, and the maximum torque value of the bracket is 8.93 Nmm / 2 when the bracket tilts 25 掳) when the inclination of the bracket is the same, the maximum torque of the bracket is 22.37 Nmm, and the maximum torque of the bracket is 8.93 Nmm-1 when the bracket tilts 25 掳. The maximum torque of stainless steel bow wire is 2 times that of 尾-titanium wire. With the decrease of the distal inclination of the bracket, the maximum torque value of the bracket increases gradually, and the torque performance is improved. The torque performance is mainly determined by the horizontal and vertical distance between the two central crest of the bracket. When the preset torque is expressed, the stress distribution on both sides of the bracket becomes asymmetrical with the decrease of the distal slope of the bracket, which is mainly determined by the horizontal distance between the two central crest of the bracket.
【作者单位】：西南医科大学附属口腔医院;
【基金】：国家自然科学基金资助项目(81300903) 四川省医学会青年课题(川学会医字[2016]2号Q15017)
【分类号】：R783

【相似文献】