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A New Numerical Model to Analyze Stress Distribution of TMJ Disc from 2-D MRI Scans

DOI: 10.5923/j.ac.20120205.01

Keywords: Finite Element Model, Temporomandibular Joint Stress Analysis, 3-D Reconstruction Modeling

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Abstract:

From the anatomical and biomechanical points of view, temporomandibular joint (TMJ) is sophisticated bicondylar articulatory complex with great demand on neuromuscular control with a frequency of motion indicated up to 2000 periods per day. This makes the TMJ one of the most frequently exerted joints of the human body and in conjunction with individual uniqueness of this joint places high demand on its design and reliability. Experimental studies concerning the distribution of the loads in the TMJ have been performed on animal models. Numerical modeling provides more understanding of joint physiology and pathogenesis of the joint diseases. Magnetic resonance imaging (MRI) has replaced computed tomography (CT) and arthrography as the primary modality in the evaluation of the TMJ. At this study a new numerical method are used to build 3-D model of TMJ from 2-D MRI scans and applied some stress-strain analysis to validate this model for different normal and abnormal patients. These models are based on multi-object reconstruction technique and tetrahedral elements building

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