The absorption and desorption of water by seven composite materials are diffusion processes, with the diffusion coefficient decreasing with concentration. The magnitude of the diffusion coefficients were consistent with diffusion occurring in the resin phase. Although most materials showed reversible behavior during repeated sorption-desorption cycles, one material showed irreversible breakdown.
Get full access to this article
View all access options for this article.
References
1.
Paffenbarger, G.C., and Rupp, N.W.: Composite Restorative Materials in Dental Practice : A Review, Int Dent J24: 1-11, 1974.
2.
Amalgamated Dental Company Ltd.: Dental Filling Materials, British Patent Application No. 12134, 1972.
