Patent ID: 8297976

Claim:
A dental restorative method comprising the steps of: (1) applying a dental primer composition to a tooth structure; (2) thereafter applying a dental adhesive composition to the tooth structure; (3) attaching a prosthetic or orthodontic device to the tooth structure after (2) with a resin cement; and (4) hardening the resin cement by a method selected from the group consisting of light-curing, self-curing, and dual-curing, wherein the dental primer composition comprises: at least one solvent, and at least one acidic polymerizable monomer selected from the group consisting of phenyl methacryloxyethyl phosphate, glyceryldimethacrylate phosphate, dipentaerithritol pentaacrylate phosphate, methacryloyloxydecyl phosphate, and hydroxyethylmethacrylate phosphate; and wherein the dental adhesive composition comprises: (i) at least one non-acidic polymerizable monomer having at least one ethylenically unsaturated group; (ii) at least one acidic compound having at least one ethylenically unsaturated group and at least one acidic moiety selected from the group consisting of carboxylic acid, carboxylic acid anhydride, phosphonic acid or its salt or ester derivatives, phosphoric acid or its salt or ester derivatives, and combinations thereof, (iii) at least one photoinitiator, (iv) at least one solvent, and (v) about 0-40% by weight of one or more fillers; wherein the weight ratio of non-acidic polymerizable monomers/acidic compounds in the dental adhesive composition is more than 4.5; the viscosity of the dental adhesive composition is less than 350 centipoise (cP) at 25° C.; and the dental adhesive composition excluding solvent and filler has an acid number of less than 0.75 mmol NaOH/g.