Single-part, light-curable, self-adhering dental restorative composition and method of using the same

A single-part, light-curable, self-adhering dental restorative composition consisting essentially of:

• (A) one or more first polymerizable monomers selected from the group consisting of hydroxyethyl (meth)acrylate phosphate, hydroxypropyl (meth)acrylate phosphate, hydroxybutyl (meth)acrylate phosphate, dipentaerythritol penta(meth)acrylate phosphate, pentaerythritol tri(meth)acrylate phosphate, phenyl (meth)acryloxyethyl phosphate, and a combination thereof;
• (B) one or more second polymerizable monomers having a molecular weight of 100-250, at least one hydroxyl group, and at least one ethylenically unsaturated group;
• (C) one or more third polymerizable monomers having a molecular weight of 270-900, at least two ethylenically unsaturated groups and no acidic functional group;
• (D) a photo-initiator system having at least one photo-initiator;
• (E1) one or more first fillers that are a polymeric filler having a mean particle size of more than 4.5 microns and less than 70 microns comprising 5-100% by weight of a crosslinked polymeric matrix and 0-95% by weight of at least one inorganic filler having a mean particle size in the range of 0.005-20 microns;
• (E2) one or more second fillers having a mean particle size of more than 0.25 microns, but no more than 4.5 microns;
• and
• (E3) one or more third fillers having a mean particle size of 0.005-0.25 microns;
• (F) optionally one or more ingredients selected from the group consisting of:
• a colorant, a stabilizer, a UV absorber, a solvent, a fluoride-releasing compound, an antimicrobial additive, and a surfactant;
• wherein the weight ratio of (A+B):(C) ranges from 30:70 to 90:10;
• the concentration of component (A) in the restorative composition, excluding fillers, is in the range of 10-50% by weight;
• the concentration of component (B) in the restorative composition, excluding fillers, is in the range of 15-60% by weight;
• and
• the composition has a shear bond strength of at least 10 MPa to both dentin and enamel after being light-cured.