Establishment of Orthotropic Finite Element Model for Individual Mandible with CAD Technique
DING Xi
ZHU Xing-hao
ZHANG Xiu-hua
LIAO Sheng-hui
ZHANG Lin
CHEN Hong
LIN Zhi
Abstract：Objective To develope orthotropic three-dimensional (3 D) finite element model of individual mandible. Methods Based on thin layer CT mandible image data and the USIS software by ourselves, the individual geometry of the complete range of mandible was well established, also the distinction between the contour boundary of cortical and cancellous bones was done automatically. A series of new effective CAD methods such as "no-seed region segmentation" ,non-parallel"best cross-section planes" and the algorithm employed a pair of B-spline curves fitting were used to accurately construct of 3D geometry surface model of the complete range of mandible in a man-machine conversation and automatic style. The elastic material properties were definited and the volumes were meshed with solid elements. The surface model was then imported into the FE software system ANSYS 9. 0 for the three-dimensional FE mesh construction. Results The orthotropic 3D finite element model of individual mandible with accurate anatomy and well simulated biomechanics was established. Conclusion With new CAD method based on CT data and USIS software the establishment of orthotropic 3D finite element model for individual mandible is realized.
Keywords：mandibleorthotropyfinite element methodcomputer aided designbiomechanics
Publication Date：2009-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 448-452 )