基于逆向工程的个性化舌侧正畸矫治体系数字化设计

Numerical Design of Customized Lingual Orthodontic Treatment System Based on Reverse Engineering

目的:准确建立个性化右侧上颌舌侧正畸矫治体系三维有限元模型,从而为生物力学分析打下基础并提供可靠的研究途径。方法:利用螺旋CT扫描获得头颅DICOM数据,在Mimics中进行牙列的三维重建,导入逆向工程软件Geomagic对牙列模型进行曲面修补及拟合,在UG NX软件中构建矫治系统数值模型,最后将其导入ANSYS软件进行三维有限元模型的构建。结果:建立了含矫治系统的个性化右侧上颌牙齿三维有限元数值模型。结论:基于逆向工程的个性化舌侧矫治数字化设计方法,将Mimics、Geomagic及UG NX综合运用进行数值建模,极大地提高了建模精度,是一种快捷高效的舌侧矫治系统的建模途径。

Objective： To construct a customized three--dimensional finite element model for left section of maxillary lingual orthodontic treatment system accurately for further biomechanics analysis. Methods： DICOM standard images of head were obtained by CT scanning, then constructed a 3D model of dentition by Mimics software. Geomagic, a reverse engineering software, was used to repair and fitting the surface of them. On the basis of those above, a 3D numerical model of orthodontic treatment system was built in software of UG NX, and its finite element model was implemented in ANSYS. Results： The three dimensional finite element model for left section of maxillary dentition including lingual orthodontic treatment system was established. Conclusion： A numerical design method based on customized lingual orthodontic treatment system comprehensively applies Mimics, Geomagic and UG NX in numerical modeling, which could highly improve the accuracy of orthodontic treatment; it is a fast efficient approach for the modeling of lingual orthodontic treatment system.