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    Effect of wear on stress distributions and potential fracture in teeth

    Access Status
    Fulltext not available
    Authors
    Ford, Christopher
    Bush, M.
    Lawn, B.
    Date
    2009
    Type
    Journal Article
    
    Metadata
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    Citation
    Ford, Christopher and Bush, Mark and Lawn, Brian. 2009. Effect of wear on stress distributions and potential fracture in teeth. Journal of Materials Science: Materials in Medicine. 20 (11): pp. 2243-2247.
    Source Title
    Journal of Materials Science: Materials in Medicine
    DOI
    10.1007/s10856-009-3802-5
    ISSN
    0957-4530
    URI
    http://hdl.handle.net/20.500.11937/26806
    Collection
    • Curtin Research Publications
    Abstract

    Finite element analysis is conducted on a tooth model with different degrees of wear. The model is taken as a hemispherical shell (enamel) on a compliant interior (dentin). Occlusal loading is simulated by contact with a flat or curved, hard or soft, indenter. Stress redistributions indicate that development of a wear facet may enhance some near-contact fracture modes (cone-ring cracks, radial-median cracks, edge-chipping), but have little effect on far-field modes (margin cracks). Contacts on worn surfaces with small, hard food objects are likely to be most deleterious, generating local stress concentrations and thereby accelerating the wear process. More typical contacts with larger-scale soft foods are unlikely to have such adverse effects. Implications concerning dietary habits of animals is an adjunct consideration in this work.

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