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Related Experiment Videos

Force versus time profiles of selected heat-processed denture liners.

R A Holt1, C G Zylinski, M G Duncanson

  • 1University of Oklahoma, College of Dentistry, Oklahoma City 73190.

The International Journal of Prosthodontics
|March 11, 1991
PubMed
Summary

This study explored how resilient denture lining materials perform under force over time. Higher "Rebound Index" values in modified acrylic resins correlated with better patient acceptance compared to silicone materials.

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Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Prosthodontics

Background:

  • Denture soft lining materials aim to improve patient comfort and fit.
  • Understanding the mechanical properties of these materials is crucial for clinical success.
  • Patient acceptance is a key metric for evaluating the efficacy of denture liners.

Purpose of the Study:

  • To investigate the correlation between the force-time behavior of resilient denture lining materials and patient acceptance.
  • To evaluate two modified acrylic resins and two silicone denture lining materials.
  • To identify a quantifiable parameter that predicts patient acceptance.

Main Methods:

  • Utilized a programmed indentation test to measure the force-time response of four soft lining materials.

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  • Defined a novel parameter, the "Rebound Index," based on the force-time data.
  • Compared the Rebound Index values between modified acrylic resins and silicone materials.
  • Correlated Rebound Index values with reported patient acceptance data.

    • Main Results:

    • A significant difference in the Rebound Index was observed between modified acrylic resins and silicone materials.
    • Modified acrylic resins exhibited distinct force-time behavior compared to silicone liners.
    • Higher Rebound Index values were significantly correlated with improved patient acceptance.

    Conclusions:

    • The Rebound Index effectively differentiates between modified acrylic resins and silicone denture lining materials.
    • This index serves as a predictive parameter for patient acceptance of denture liners.
    • Material selection based on the Rebound Index may enhance patient satisfaction in prosthodontics.