Hydrolytic degradation of UDMA-based resin composite sealants

The purpose of this study was to measure water sorption and solubility of some experimental UDMA-based resin composite sealants. The experimental resin composites consisted of a UDMA resin system and inorganic filler based on quartz and sodium fluoride. Samples of resin composites were stored in bidistilled water over a 21-day period. The results obtained for the proposed resin composite sealants showed that the presence of sodium fluoride influence water sorption and solubility. Water sorption and solubility increased in time and increase with amount of NaF from composites. Resin composite sealants with 20% by weight of NaF had the highest in water sorption and solubility values. The surface of composites investigated by SEM showed slow differences.