Effect of surface modified fillers on the water absorption of a (RTV) silicone denture soft lining material

Objectives: The purpose of the present study was to modify the filler content of an experimental room-temperature vulcanizing (RTV) lining material that demonstrated high water sorption in order to produce a material with low sorption properties. Methods: Three new formulations were prepared, each containing different hydrophobic silane-treated silica fillers. Water sorption properties for specimens obtained from these formulations were determined using standard experimental techniques. Results: All formulations demonstrated greatly reduced water absorption and low volume change. Conclusions: An experimental RTV poly(dimethylsiloxane) denture soft lining material having low water sorption properties has been produced.