Patent ID: 7115674

Claim:
A dental self-curing resin cement composition of an ointment-ointment system comprising: i) a Paste A composition containing 1 to 25 wt % of the multifunctional prepolymer mixture selected from a group consisting of a mixture of 95 to 5 wt % of 2,2-bis-[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane (“Bis-GMA”) of formula 1 and 5 to 95 wt % of trifunctional methacrylate (Tri-GMA) of formula 2 based on the weight of the prepolymer mixture, a mixture of 95 to 5 wt % of Bis-GMA and 5 to 95 wt % of tetrafunctional methacrylate (Tetra-UMA) of formula 3 based on the weight of the prepolymer mixture, and a mixture of 90 to 5 wt % of Bis-GMA, 90 to 5 wt % of Tri-GMA and 90 to 5 wt % of Tetra-GMA based on the weight of the prepolymer mixture; 1 to 20 wt % of a diluent; 0.1 to 15 wt % of an adhesive monomer; 0.1 to 3 wt % of a polymerization initiator; 0.1 to 3 wt % of a polymerization inhibitor; 0.1 to 2 wt % of a light stabilizer; 0.1 to 2 wt % of an antioxidant; 0.005 to 1 wt % of an inorganic pigment and some inorganic filler, wherein the sum of wt % of all components is 100 wt %; and ii) a Paste B composition containing 1 to 25 wt % of the same prepolymer mixture in the Paste A composition; 1 to 20 wt % of a diluent; 0.1 to 15 wt % of an adhesive monomer; 0.1 to 3 wt % of a reductant; 0.1 to 3 wt % of a polymerization inhibitor; 0.1 to 2 wt % of a light stabilizer; 0.1 to 2 wt % of an antioxidant; 0.005 to 1 wt % of an inorganic pigment and some inorganic filler, wherein the sum of wt % of all components is 100 wt %