Abstract
New experimental resins for denture liner were prepared and evaluated.The materials composed of methyl methacrylate(MMA)and vinylidene fluoride/hexafluoropropylene copolymer(2-6F), or vinylidene fluoride/tetrafluoroethylene/hexafluoropropylene copolymer(2-4-6F)were polymerized by visible light curing and cold curing and compared with 3commercial materials by water and oil sorption tests, thermomechanical analysis(TMA)and cytotoxity test.Water sorption and solubility were smaller in the materials containing 2-6F than in those 2-4-6F, and smaller in the light-cured materials containing 2-6F than in the cold-cured materials.The light-cured materials from 2-6F showed less water sorption and lower solubility than the commercial lining materials studied, and very little oil sorption.TMA showed that the glass transition temperature(Tg)of the new materials was slightly lower and that their stiffness was approximately the same when compared with the commercial materials.Cell growth was not inhibited by the materials which implied their low toxic nature.Overall, the new experimental light-cured materials containing 2-6F seem to have suitable properties for a denture liner, and would be worth applying to practical use.
