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.
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).
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.
The results have been analyzed by relevant theoretical models, which have been shown to explain the experimental data.