A photocurable composition includes a (meth)acrylic monomer component and a photopolymerization initiator, wherein an adhesive force of a cured product is less than or equal to 1.5 N, and a rupture elongation of the cured product is greater than or equal to 20%.

The present invention provides a dental composition that exhibits high adhesive property for both dental restoration materials, such as porcelain, and tooth structure. The present invention relates to a one-part dental composition comprising a compound (A) represented by the following general formula (1), a monomer (B) having an acidic group, and water (C),
Y—SiR.sub.nX.sub.(3-n)  (1),
wherein Y represents a monovalent organic group having a polymerizable group, R represents a group selected from the group consisting of an alkyl group, an aryl group, and an aralkyl group, X represents a hydroxyl group or a hydrolyzable group, and n represents an integer of 1 or 2, in which the plurality of R may be the same or different, and the plurality of X may be the same or different, and the content of the water (C) 1.0 to 50 mass %.

The present invention provides a dental composition that exhibits high adhesive property for both dental restoration materials, such as porcelain, and tooth structure. The present invention relates to a one-part dental composition comprising a compound (A) represented by the following general formula (1), a monomer (B) having an acidic group, and water (C),
Y—SiR.sub.nX.sub.(3-n)  (1),
wherein Y represents a monovalent organic group having a polymerizable group, R represents a group selected from the group consisting of an alkyl group, an aryl group, and an aralkyl group, X represents a hydroxyl group or a hydrolyzable group, and n represents an integer of 1 or 2, in which the plurality of R may be the same or different, and the plurality of X may be the same or different, and the content of the water (C) 1.0 to 50 mass %.

The present invention is related to a dental composition comprising: (a) at least one polymerizable monomer having at least one ethylenically unsaturated group; (b) a radical initiator system comprising (i) a photosensitizer having an absorption maximum ranging from 400 nm to 800 nm; (ii) a coinitiator; and (iii) a compound of the following formula (1):

##STR00001## wherein R.sup.1 and R.sup.2, which may be the same or different, independently represent a hydrogen atom, a C.sub.1-6 alkyl group, or a C.sub.1-6 alkoxy group; R.sup.3 and R.sup.4, which may be the same or different, independently represent a hydrogen atom, or a C.sub.1-6 alkyl group, or R.sup.3 and R.sup.4 may represent a bond so that the carbon atoms to which R.sup.3 and R.sup.4 are bonded are linked by a double bond; R.sup.5 and R.sup.6, which may be the same or different, independently represent a hydrogen atom, or a C.sub.1-6 alkyl group, or R.sup.5 and R.sup.6 may represent a bond so that the carbon atoms to which R.sup.5 and R.sup.6 are bonded are linked by a double bond; L represents a single bond or a group —CRH—, wherein R may be a hydrogen atom, a C.sub.1-6 alkyl group, or a C.sub.1-6 alkoxy group; n and m, independently are integers of 1 to 6.

The present invention is related to a dental composition comprising: (a) at least one polymerizable monomer having at least one ethylenically unsaturated group; (b) a radical initiator system comprising (i) a photosensitizer having an absorption maximum ranging from 400 nm to 800 nm; (ii) a coinitiator; and (iii) a compound of the following formula (1):

##STR00001## wherein R.sup.1 and R.sup.2, which may be the same or different, independently represent a hydrogen atom, a C.sub.1-6 alkyl group, or a C.sub.1-6 alkoxy group; R.sup.3 and R.sup.4, which may be the same or different, independently represent a hydrogen atom, or a C.sub.1-6 alkyl group, or R.sup.3 and R.sup.4 may represent a bond so that the carbon atoms to which R.sup.3 and R.sup.4 are bonded are linked by a double bond; R.sup.5 and R.sup.6, which may be the same or different, independently represent a hydrogen atom, or a C.sub.1-6 alkyl group, or R.sup.5 and R.sup.6 may represent a bond so that the carbon atoms to which R.sup.5 and R.sup.6 are bonded are linked by a double bond; L represents a single bond or a group —CRH—, wherein R may be a hydrogen atom, a C.sub.1-6 alkyl group, or a C.sub.1-6 alkoxy group; n and m, independently are integers of 1 to 6.

To provide a curable composition that is readily modeled with low viscosity and excellent curing capability in modeling by stereolithography, and provides a cured article excellent in toughness and water resistance, and a resin composition for stereolithography prepared therefrom. To provide a resin composition for stereolithography that is favorable particularly for a dental mouthpiece and a denture base material. A curable composition containing 79.0 to 99.0% by mass of a polymerizable monomer (a), 0.1 to 10.0% by mass of a photopolymerization initiator (b), and 0.01 to 20.0% by mass of a compound represented by the following general formula (I) as a polyfunctional polymerizable compound (c):

##STR00001##

wherein R.sup.1 and R.sup.2 each independently represent at least one kind selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, and an aralkyl group; R.sup.3 represents at least one kind of a polymerizable functional group selected from the group consisting of a (meth)acryloyl group, a 4-vinylphenyl group, and an alkenyl group having 2 to 5 carbon atoms; and n represents an arbitrary integer of 0 to 5.

The present invention relates to an initiator modified polyacidic polymer having a covalently bonded initiator compound, and to a dental resin-modified glass ionomer composition comprising this polyacidic polymer. Furthermore, the present invention relates to a use of the initiator modified polyacidic polymer for the preparation of a dental composition. The covalently bonded initiator compound of the initiator modified polyacidic polymer may be any compound of a redox initiator system, a photoinitiator system, for example a Norrish type I or II photoinitiator, an electron donor component, a sensitizer component or a coinitiator component.

The present invention relates to an initiator modified polyacidic polymer having a covalently bonded initiator compound, and to a dental resin-modified glass ionomer composition comprising this polyacidic polymer. Furthermore, the present invention relates to a use of the initiator modified polyacidic polymer for the preparation of a dental composition. The covalently bonded initiator compound of the initiator modified polyacidic polymer may be any compound of a redox initiator system, a photoinitiator system, for example a Norrish type I or II photoinitiator, an electron donor component, a sensitizer component or a coinitiator component.

In one embodiment, the present application discloses a photo-cleavable surface binding compound of the Formula I and Formula II:

##STR00001##

wherein the variables EG, EG1, SP1, SP2, SP3, Ar and BG are as defined herein. In another embodiment, the application discloses a method for forming a coating on a surface of a substrate using the surface binding compound.

In one embodiment, the present application discloses a photo-cleavable surface binding compound of the Formula I and Formula II:

##STR00001##

wherein the variables EG, EG1, SP1, SP2, SP3, Ar and BG are as defined herein. In another embodiment, the application discloses a method for forming a coating on a surface of a substrate using the surface binding compound.