Finite Element Analysis of Fiber-reinforced Fixed Partial Dentures

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  • NAKAMURA Takashi
    Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
  • OHYAMA Tatsuo
    Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
  • WAKI Tomonori
    Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
  • KINUTA Soichiro
    Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
  • WAKABAYASHI Kazumichi
    Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
  • TAKANO Naoki
    Department of Micro System Technology, College of Science and Engineering, Ritsumeikan University
  • YATANI Hirofumi
    Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry

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Two-dimensional finite element models were created for a three-unit posterior fixed partial denture. An experimental resin-impregnated glass fiber was used as the fiber-reinforced composite (FRC) for the framework. The FRC was evaluated using varying combinations of position and thickness, alongside with two types of veneering composite. A load of 50N simulating bite force was applied at the pontic in a vertical direction. Tensile stress was examined using a finite element analysis program.<br>Model without FRC showed tensile stress concentrations within the veneering composite on the cervical side of the pontic—from the connector area to the bottom of the pontic. Model with FRC at the top of the pontic had almost the same stress distribution as the model without FRC. Models with 0.4-0.8mm thick FRC positioned at the bottom of the pontic showed maximum tensile stresses reduced by 4-19% within the veneering composite.

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