Three-dimensional modeling of modified Le Fort Ⅰ osteotomy of the maxilla and finite element analysis of postoperative occlusion
10.12007/j.issn.0258-4646.2024.01.008
- VernacularTitle: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
- Author:
Chuqing LIU
1
;
Yang LI
;
Shaoyang BI
;
Yangyang LIN
Author Information
1. 大连医科大学口腔医学院,辽宁 大连 116044
- Keywords:
maxilla modeling;
finite element analysis;
modified Le Fort Ⅰ osteotomy;
stress distribution
- From:
Journal of China Medical University
2024;53(1):46-50
- CountryChina
- Language:Chinese
-
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.
