Biomechanical analysis of Chinese standard artificial temporomandibular joint
ZHANG Lu-zhu
HE Dong-mei
YANG Lei
ZHU Hua-dan
CHANG Yu-si
ZHANG Wen-yue
YANG Zhi
ZHAN Yi-ning
Abstract：Objective To study the stress distribution and displacement of the Chinese standard artificial temporomandibular joint.Methods ANSA,Hypermesh and Abaqus softwares were used to establish finite element model of condylar defect,which was reconstructed separately by Chinese and Biomet standard artificial temporomandibular joint.The stress distribution and displacement of the jaw and Chinese and Biomet standard artificial temporomandibular joints were analyzed by loading maximal bite force on the model.Results The maximum stress of four kinds of Chinese standard prostheses were 54MPa、79MPa、64MPa and 72MPa,while maximum stress of Biomet standard prosthesis was 78MPa.The stress of the jaw was under 20MPa in each model,and the displacement of prosthesis and jaw was under 0.05mm.The maximum stress of Chinese standard prosthesis occurred at the first posterior screw hole,whereas for Biomet standard prosthesis it was located at the neck of the condyle.Conclusion The stress is distributed uniformly in Chinese standard prostheses,which can avoid prosthesis fracture and bone absorption caused by excessive stress.
Keywords：artificial temporomandibular jointbiomechanical analysisChinese standard
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 142-145 )