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  • Stresses at TMJ

    Greetings Biomch-L members,

    I am an MASc student at UofT (Centre for Biomaterials/Mech Eng) and am
    interested in investigating the stresses in the temporomandibular joint
    (TMJ), particularly at the condyle, in order to determine the mechanical
    properties required for a proposed biodegradable condylar implant.

    A brief literature review yielded studies describing
    biomechanical/mathematical models predicting forces in the TMJ, and more
    recently, finite element models of the human mandible. There were varying
    methods of constraint and load application, and only a few investigated the
    stress at the quite complex condyle/meniscus/fossa interface (Tanne, Tanaka
    and Sakuda; Chen and Xu; Korioth, Romilly and Hannam).

    1. I would appreciate hearing about any further sources of information in
    this area.

    It seems likely that to obtain the specific information I require for the
    implant, I will need to develop an FE model to simulate the varying load
    conditions experienced at the TMJ, so :

    2. I would also like to hear any opinions on how to obtain a complete
    picture of stress at the condyle. Are max forces exerted on the TMJ only
    during clench? If so, there may be enough information available and no need
    for further FE modeling, or, are forces affected by incisal opening?

    The rest of my questions were answered in Hans Van Oosterwyck's recent
    summary. Thanks in advance for all your help - I will post a summary of replies.

    Regards
    Tim
    -----------------------------------------------------
    Tim Woodfield
    Institute of Biomedical Engineering
    University of Toronto
    Home Ph: (416) 536-2304
    Office Ph: (416) 978-4995
    Office Fax: (416) 978-4317
    E-mail: woodfield@ibme.utoronto.ca
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