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The creep behavior of denture-supporting tissues and soft lining materials
I Hayakawa1, S Hirano, S Kobayashi
1Department of Geriatric Dentistry, Tokyo Medical and Dental University, Japan.
The International Journal of Prosthodontics
|July 1, 1994
Summary
Researchers quantified the physical behavior of palatal mucosa to develop a new soft denture liner. Controlling crosslinking and filler content allows the material to mimic natural tissue properties for improved denture comfort.
Area of Science:
- Biomaterials Science
- Dental Materials
- Tissue Mechanics
Background:
- Soft denture liners aim to improve patient comfort and function.
- Understanding the viscoelastic properties of palatal mucosa is crucial for designing effective liners.
- Previous research has not fully characterized the creep and recovery behavior of young adult palatal tissue.
Purpose of the Study:
- To quantify the viscoelastic properties of young adult palatal mucosa using a mechanical model.
- To develop a novel soft denture lining material with properties mimicking palatal mucosa.
- To compare the mechanical behavior of the new material with that of the natural tissue, particularly after load release.
Main Methods:
- Creep behavior analysis of palatal mucosa from young adults.
- Application of Voigt's four-element viscoelastic model.
- Development of a new soft lining material with adjustable crosslinking and inorganic filler content.
- Comparative analysis of tissue and material creep and recovery characteristics.
Main Results:
- Palatal mucosa exhibited distinct instantaneous and delayed elastic recovery patterns, with delayed recovery being significantly larger than displacement (P < .05).
- Viscous recovery was measurable, though smaller than elastic components.
- The developed soft lining material demonstrated tunable properties, allowing its mechanical behavior to approximate that of the palatal mucosa.
Conclusions:
- The mechanical properties of palatal mucosa can be effectively modeled using a four-element viscoelastic model.
- A new soft denture liner material was successfully developed with tunable properties.
- Optimizing crosslinking and inorganic filler content in soft lining materials can replicate the viscoelastic behavior of palatal mucosa, potentially enhancing denture performance and patient comfort.