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Related Experiment Videos

A stress-relieved resin-bonded fixed partial denture.

S Plainfield1, V Wood, R Podesta

  • 1University of California, School of Dentistry, San Francisco.

The Journal of Prosthetic Dentistry
|March 1, 1989
PubMed
Summary
This summary is machine-generated.

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Resin-bonded fixed partial dentures, or Maryland Bridges, often fail due to tooth mobility and bonding issues. Incorporating stress relievers into their design significantly reduces these bonding failures.

Area of Science:

  • Dental Materials Science
  • Prosthodontics
  • Biomaterials Engineering

Background:

  • Resin-bonded fixed partial dentures (Maryland Bridges) are frequently associated with bonding failures.
  • These failures stem from both inadequate bonding and individual tooth mobility.
  • Existing designs lack sufficient mechanisms to mitigate stress-related failures.

Purpose of the Study:

  • To investigate the efficacy of incorporating stress relievers in resin-bonded fixed partial denture designs.
  • To determine if stress relievers can mitigate common failure modes.
  • To improve the long-term success rate of Maryland Bridge restorations.

Main Methods:

  • Modified resin-bonded fixed partial denture designs were fabricated incorporating novel stress-relieving elements.

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  • Clinical trials were conducted to evaluate the performance of these modified dentures.
  • Failure analysis focused on debonding events and assessing tooth mobility over time.

    • Main Results:

    • The incorporation of stress relievers led to a significant reduction in reported bonding failures.
    • Improved stress distribution within the prosthesis and at the abutment tooth interface was observed.
    • A marked decrease in failures attributed to individual tooth mobility was noted.

    Conclusions:

    • Stress relievers are a critical design component for enhancing the longevity of resin-bonded fixed partial dentures.
    • This design modification offers a promising solution to overcome common failure modes associated with Maryland Bridges.
    • Further research should explore various stress-relieving mechanisms for diverse clinical applications.