Finite Element Analysis on Exposure of Individual Endoprosthesis for Mandibular Reconstruction.

doi:10.13701/j.cnki.kqyxyj.2018.04.020

Abstract

Abstract: Objective: To explore stress and strain distribution of individual endoprosthesis for the reconstruction of unilateral mandibular defect with finite element method, and discuss the biomechanical factors of postoperative exposure of individual endoprosthesis. Methods: From September 2008 to September 2011, there were three cases of implant exposure after mandibular reconstruction. The CT data of patients were reacquired, and three-dimensional finite element model of the mandible and implant was established in MIMICS and Geomagic softwares. According to the actual condition of screw fixation and occlusion of patients, stress-strain distribution of the reconstruction model was calculated in ANSYS14.0 software. Results: The finite element model can accurately analyze the stress-strain of reconstruction model of mandibular defect. The maximum strain area of implant is basically located nearby the exposed parts. Conclusion: The postoperative exposure of individual endoprosthesis is correlated with the strain distribution. The finite element analysis can discover strain clusters and provide theoretical support for optimization design of the implant.

Key words: Individual endoprosthesis, Mandibular reconstruction, Finite element analysis

LI Peng, SHAO Xiao-yun, LI Yan-ling, HUANG Da-hong, ZENG Hua-jiang, TANG Wei. Finite Element Analysis on Exposure of Individual Endoprosthesis for Mandibular Reconstruction.[J]. Journal of Oral Science Research, 2018, 34(4): 424-427.

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