中国医科大学学报2024，Vol.53Issue(1)：46-50,5.DOI:10.12007/j.issn.0258-4646.2024.01.008
上颌骨改良Le Fort Ⅰ型截骨术的三维建模和术后咬合有限元分析
Three-dimensional modeling of modified Le Fort Ⅰ osteotomy of the maxilla and finite element analysis of postoperative occlusion
摘要
Abstract
Objective To establish a smooth three-dimensional(3D)geometric model of the maxilla based on CT data using four dif-ferent software packages,to mimic the modified Le Fort Ⅰ osteotomy and its fixation scheme,and to perform a finite element analysis of the postoperative occlusion.Methods CT data were preliminarily processed using Mimics software to produce an STL 3D model.The model was then imported into Inspire Studio software to create a smoothed PolyNURBS geometric model.SpaceClaim software was used to model the surgical osteotomy and fixation schemes.Finally,ANSYS Workbench was used to conduct a 3D finite element analysis simu-lating the patient's occlusion after surgery.Results The simulation results showed that the connection relationship of the finite element model was accurately established under the molar occlusion condition.Under a total occlusal force of 6 N,the maximum equivalent stress of the titanium plate was 73 MPa.Conclusion The maxillary modeling and analysis method used in this study can produce a smooth geometric model suitable for finite element simulation.The results of this study can provide reference for various fixation schemes in orthognathic surgery.关键词
上颌骨建模/有限元分析/改良Le Fort Ⅰ型截骨术/应力分布Key words
maxilla modeling/finite element analysis/modified Le Fort Ⅰ osteotomy/stress distribution分类
医药卫生引用本文复制引用
刘楚晴,李阳,毕绍洋,林阳阳..上颌骨改良Le Fort Ⅰ型截骨术的三维建模和术后咬合有限元分析[J].中国医科大学学报,2024,53(1):46-50,5.基金项目
辽宁省自然科学基金(20180550327) （20180550327）
