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Stress fatigue: basic principles and prosthodontic implications

H W Wiskott1, J I Nicholls, U C Belser

  • 1Division of Fixed Prosthodontics, School of Dentistry, University of Geneva, Switzerland.

The International Journal of Prosthodontics
|March 1, 1995
PubMed
Summary
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Most prosthodontic fractures result from fatigue failure over many years, not acute overload. This review examines fatigue failure in prosthodontics and suggests future research guidelines.

Area of Science:

  • Biomaterials Science
  • Dental Materials Science
  • Prosthodontics

Background:

  • Prosthodontic structures often fracture after prolonged service life.
  • These failures are typically attributed to fatigue, not acute overload.
  • Understanding fatigue failure mechanisms is crucial for long-term dental restorations.

Purpose of the Study:

  • To review current knowledge on fatigue failure in prosthodontic structures.
  • To examine existing test methods for evaluating fatigue resistance.
  • To provide guidelines for future research in this area.

Main Methods:

  • Literature review of published studies on fatigue failure in prosthodontics.
  • Analysis of current methodologies for fatigue testing of dental materials and devices.

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  • Synthesis of findings to identify knowledge gaps and propose future research directions.

    • Main Results:

    • Fatigue failure is the predominant mode of fracture in long-term prosthodontic applications.
    • Current test methods for fatigue assessment vary, necessitating standardization.
    • A comprehensive understanding of fatigue behavior is essential for improving the longevity of dental prostheses.

    Conclusions:

    • Prosthodontic failures are largely due to material fatigue over time.
    • Standardized fatigue testing protocols are needed for reliable evaluation.
    • Future research should focus on developing more robust materials and predictive models for fatigue life.