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The interaction of various liquids with long-term denture soft lining materials
Wen-Chien Liao1, Gavin J Pearson, Michael Braden
1Department of Prosthetic Dentistry, Tri-Service General Hospital and School of Dentistry, National Defense Medical Center, Taipei, Taiwan.
Objectives:
To study the uptake of liquids, representative of those encountered orally, by long-term denture soft lining materials, and analyze the data in terms of appropriate theories.
Methods:
Four proprietary and one experimental soft lining material were investigated, and the weight change presented as a function of time in both aqueous and organic fluids over the course of a year. A separate experiment determined the equilibrium swelling in ethanol of poly(ethyl methacrylate) and poly(methyl methacrylate).
Results:
Uptake date for the five soft lining materials in various aqueous solution, coconut oil and HB307 are reported. The experimental value for the equilibrium swelling of poly(ethyl methacrylate) and poly(methyl methacrylate) in ethanol was reported to indicate the solubility parameter of the system.
Significance:
The results have been analyzed by relevant theoretical models, which have been shown to explain the experimental data.
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