A (meth)acrylate includes a compound (X) having a structure formed by a reaction of an epoxy compound (A) containing an epoxy group and a tertiary carbon atom or a quaternary carbon atom, a (meth)acrylic acid (B), and an iso(thio)cyanate compound (C) having two or more iso(thio)cyanate groups.

Radically polymerizable dental material, which includes a combination of at least three thiourea derivatives, a hydroperoxide and preferably a transition metal compound as initiator system for the radical polymerization.

Radically polymerizable dental material, which includes a combination of at least three thiourea derivatives, a hydroperoxide and preferably a transition metal compound as initiator system for the radical polymerization.

An object of the present disclosure is to provide a dental composition that can exhibit sufficient curability even in a state where moisture is excessive as in the oral environment. The dental composition of the present disclosure contains component (a): monomer containing (meth)acrylamide group represented by formula (1): ##STR00001##
(In formula, R represents a hydrogen atom or a methyl group and Rs may be the same or different from each other. R2 is an alkyl group having 2 to 6 carbon atoms and R2s may be the same or different from each other.)

An object of the present disclosure is to provide a dental composition that can exhibit sufficient curability even in a state where moisture is excessive as in the oral environment. The dental composition of the present disclosure contains component (a): monomer containing (meth)acrylamide group represented by formula (1): ##STR00001##
(In formula, R represents a hydrogen atom or a methyl group and Rs may be the same or different from each other. R2 is an alkyl group having 2 to 6 carbon atoms and R2s may be the same or different from each other.)

An object of the present disclosure is to provide a dental composition that can exhibit sufficient curability even in a state where moisture is excessive as in the oral environment. The dental composition of the present disclosure contains component (a): monomer containing (meth)acrylamide group represented by formula (1): ##STR00001##
(In formula, R represents a hydrogen atom or a methyl group and Rs may be the same or different from each other. R2 is an alkyl group having 2 to 6 carbon atoms and R2s may be the same or different from each other.)

The invention relates to a two-part dual cure dental composition with improved stability toward discoloration and premature polymerization. The dental composition comprises a Base Part and a Catalyst Part, the Base Part comprising polymerizable component(s) without an acidic moiety, optionally polymerizable component(s) with an acidic moiety, filler(s), transition metal component(s), peroxide component(s), stabilizer component(s) comprising a free-radical moiety, the Catalyst Part comprising polymerizable component(s) without an acidic moiety, filler(s), ascorbic acid component, photo-initiator system, stabilizer component(s) comprising a phosphite or sulfite moiety. The dental composition is in particular useful as bulk fill dental composite, dental resin cement, core build-up dental material or self- and dual cure dental adhesive. The invention further relates to an initiator system and the use of a stabilizer comprising a free-radical moiety.

The invention relates to a two-part dual cure dental composition with improved stability toward discoloration and premature polymerization. The dental composition comprises a Base Part and a Catalyst Part, the Base Part comprising polymerizable component(s) without an acidic moiety, optionally polymerizable component(s) with an acidic moiety, filler(s), transition metal component(s), peroxide component(s), stabilizer component(s) comprising a free-radical moiety, the Catalyst Part comprising polymerizable component(s) without an acidic moiety, filler(s), ascorbic acid component, photo-initiator system, stabilizer component(s) comprising a phosphite or sulfite moiety. The dental composition is in particular useful as bulk fill dental composite, dental resin cement, core build-up dental material or self- and dual cure dental adhesive. The invention further relates to an initiator system and the use of a stabilizer comprising a free-radical moiety.

The present invention provides a dental adhesive material kit that has desirable adhesive properties for tooth structure, and that, while ensuring appropriate strength, enables easy removal of excess cement in a semi-cured state created by temporarily applying light to excess portions of cement with a photoirradiator. The present invention relates to a dental adhesive material kit comprising a dental aqueous adhesive composition (A) and a dental curable composition (B), and satisfying the following formula (I)

0≤t2−t1≤3.0  (I),

wherein t1 (min) represents a contactual polymerization start time of the dental aqueous adhesive composition (A) and the dental curable composition (B), and t2 (min) represents a polymerization start time of the dental curable composition (B).

The present invention provides a dental adhesive material kit that has desirable adhesive properties for tooth structure, and that, while ensuring appropriate strength, enables easy removal of excess cement in a semi-cured state created by temporarily applying light to excess portions of cement with a photoirradiator. The present invention relates to a dental adhesive material kit comprising a dental aqueous adhesive composition (A) and a dental curable composition (B), and satisfying the following formula (I)

0≤t2−t1≤3.0  (I),

wherein t1 (min) represents a contactual polymerization start time of the dental aqueous adhesive composition (A) and the dental curable composition (B), and t2 (min) represents a polymerization start time of the dental curable composition (B).