Investigation of Stress Distribution in Roots Restored with Different Crown Materials and Luting Agents

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  • SUZUKI Chikako
    Fixed Prosthodontics, Department of Restorative Science, Graduate School, Tokyo Medical and Dental University
  • MIURA Hiroyuki
    Fixed Prosthodontics, Department of Restorative Science, Graduate School, Tokyo Medical and Dental University
  • OKADA Daizo
    Fixed Prosthodontics, Department of Restorative Science, Graduate School, Tokyo Medical and Dental University
  • KOMADA Wataru
    Fixed Prosthodontics, Department of Restorative Science, Graduate School, Tokyo Medical and Dental University

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  • Investigtion of stress distribution in roots restored with different crown materials and luting agents

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Abstract

The purpose of this study was to identify crown materials and luting agents that would decrease the stress concentrated at the roots of endodontically treated teeth. To this end, natural tooth model (NT), full cast crown model (gold-silver-palladium alloy; MC), polymer-based restorative material crown model (HCC), and all-ceramic crown model (ACC) were constructed. In each model, methyl methacrylate-based resin cement (MMA) and composite cement (CC) were used as luting agents. The magnitudes of von Mises stress of the roots during function were compared. When the luting agent was changed from MMA to CC, von Mises stress in the cervical area decreased by 37.8 % for MC, 27.1 % for HCC, and 37.0 % for ACC. Within the limitations of this study, the combination of HCC and CC gave rise to the lowest stress concentration at the cervical area.

Journal

  • Dental Materials Journal

    Dental Materials Journal 27 (2), 229-236, 2008

    The Japanese Society for Dental Materials and Devices

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