Patent ID: 8916624

Claim:
A dental composition comprising: (1) at least one cationically reactive compound (A), (2) at least one pretreated dental filler comprising a dental filler (B) pretreated with ingredients (a), (b), and (c) in a solvent medium: (a) at least one compound (G) which is: an organic monomer, oligomer or polymer, or an organosiloxane monomer, oligomer or polymer, said compound (G) comprising at least one reactive oxirane, oxetane, alkenyl ether and/or carbonate function (frC), (b) at least one organosilicon coupling agent (F) comprising at least one reactive function (frA) bonded directly to a silicon atom capable of reacting with the dental filler (B), and at least one reactive function (frB) not directly bonded to a silicon atom capable of reacting with a reactive function (frC) of the compound (G), and (c) at least one dispersant (H) which maintains the dental filler (B) in a nonagglomerated form during and/or after the treatment in a solvent medium, (3) optionally at least one dental filler (B′), (4) optionally at least one dispersant (C), comprising at least one organic polymer or copolymer; (5) at least one cationic photoinitiator (D); and (6) optionally at least one photosensitizer (E), wherein said composition has increased stability during aging as indicated by having an epoxy content, expressed as milliequivalents (mEE) of epoxy, of 100 or greater, after aging for 30 days at 40° C.