Characteristics of novel di-α-fluoroacrylate derivatives with polyfluoroalkyl aromatic backbone as a binder resin of direct filling materials.

To realize good mechanical properties and water resistance of a dental resin, novel di-α-fluoroacrylates with polyfluoroalkyl aromatic backbone were studied. The monomers were 2,2-bis(4-α-fluoroacryloxy phenyl)propane, 2,2-bis(4-α-fluoroacryloxy phenyl) hexafluoropropane, and 1,3-bis(2-α-fluoroacryloxy-2-hexafluoropropyl)benzene. The copolymers of the monomers and methyl methacrylate (MMA) were excellent in hardness, Izod impact strength, abrasion resistance, and water resistance, and showed similar values of compressive, diametral tensile, tensile, and bending strength compared with copolymers prepared from the corresponding dimethacrylate derivatives and MMA.