Finite Element Analysis of Asymptomatic TMJ Disc during Mouth Opening
In the temporomandibular joint (TMJ),overloading induced by big mouth opening appears to be important in the casade of events leading to temporomandibular disorders (TMD).In this study,the stress distribution of the disc was explored during big mouth opening.For this purpose,finite element models of the disc of different mouth opening degree were used.The disc was loaded with its real displacement for 18 different states of mouth opening.In the model,the posterior zone suffered higher tensile stress,and the stress level increased with the progress of the opening movement.The compressive stress level in the intermediate zone is much smaller,and kept unchanged through mouth opening.Lower tangential stresses were found in the healthy articular disc during mouth opening.This indicates that stress distribution in the articular disc changed with the progress of the opening movement.Excessive mouth opening can induce tissue damage.
TMD articular disc stress distribution FEM
Shuang Ren Qihong Li Qiguo Rong
College of Engineering,Peking University Beijing 100871,PR China School of Stomatology,Fourth Military Medical University Xi”an 710032,China
国内会议
第四届中国系统仿真学会青年工作委员会学术会议暨2012仿真科学与技术青年学术论坛
敦煌
英文
40-47
2012-08-01（万方平台首次上网日期，不代表论文的发表时间）