A Hydrophobic Restorativematrix Table 3 Mechanical Properties of the Experimental Composite Compared with a Commercial Composite and an Unfilled Resin

A hydrophobic restorative composite based on a fluorocarbon analog of an alkyl methacrylate and a bisphenol adduct was formulated into a onepaste system, which polymerized in the presence of blue light. Physical, mechanical, and waterrelated properties were determined. High contact angles and low water sorption were shown by the experimental composite. Capillary penetration of oral fluids around restorations, therefore, could be prevented in the presence of this highly hydrophobic surface. The physical and mechanical properties of the experimental composite were either comparable to or somewhat less favorable than commercial Bis-GMA composites.