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Environmental Dynamic Mechanical Analysis to Predict the Softening Behavior of Neural Implants
Published on: March 1, 2019
Age changes in the viscoelasticity of permanent soft lining materials
N J Jepson1, J F McCabe, R Storer
1Department of Prosthodontics, Dental School, University of Newcastle upon Tyne, UK.
Journal of Dentistry
|June 1, 1993
Summary
This study found that acrylic-based Palasiv 62 soft lining material hardens with age, unlike stable silicone Molloplast-B. These findings are crucial for understanding denture material longevity and patient comfort.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Gerontology
Background:
- Permanent soft lining materials are used in dentures to improve comfort and fit.
- Acrylic-based and silicone materials are common choices, but their long-term properties may differ.
- Understanding age-related changes is vital for clinical application and material selection.
Purpose of the Study:
- To evaluate the age-related changes in viscoelastic properties of acrylic-based (Palasiv 62) and silicone (Molloplast-B) soft lining materials.
- To compare clinical aging with laboratory aging effects.
- To assess the impact of aging on material hardness and elasticity.
Main Methods:
- Longitudinal clinical and laboratory studies were conducted.
- A force/distance probe was used to measure viscoelastic properties.
- Materials were subjected to clinical use and laboratory immersion in distilled water.
Main Results:
- Palasiv 62 showed significant reductions in compliance (increased hardness) in clinical use and laboratory immersion.
- Molloplast-B exhibited stable clinical and laboratory compliance, indicating unchanged elasticity.
- Palasiv 62 also showed slight thickness reduction over time.
Conclusions:
- Acrylic-based Palasiv 62 material hardens with age, altering its viscoelastic properties.
- Silicone-based Molloplast-B demonstrates superior long-term stability in viscoelasticity.
- Material choice impacts the longevity and functional properties of permanent soft denture liners.
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