A composition for use in selective modification of a base material surface includes a polymer having, at an end of a main chain or a side chain thereof, a group including a first functional group capable of forming a bond with a metal, and a solvent.

Disclosed is a method for filling a root canal in a tooth. The method includes positioning a fiber in the root canal of the tooth, filling at least a portion of the root canal with an unset hydrogel composition, such that the unset hydrogel composition contacts at least a portion of the fiber, setting the hydrogel composition, thereby forming a set hydrogel, and removing the fiber from the set hydrogel, thereby leaving a channel in the set hydrogel. Methods and kits for repairing teeth are also described.

Disclosed is a method for filling a root canal in a tooth. The method includes positioning a fiber in the root canal of the tooth, filling at least a portion of the root canal with an unset hydrogel composition, such that the unset hydrogel composition contacts at least a portion of the fiber, setting the hydrogel composition, thereby forming a set hydrogel, and removing the fiber from the set hydrogel, thereby leaving a channel in the set hydrogel. Methods and kits for repairing teeth are also described.

The dental restorative material of the present invention is a dental restorative material that contains a resin matrix and an inorganic filler in an amount of 25 to 1,000 parts by mass per 100 parts by mass of the resin matrix, and in the dental restorative material, the resin matrix contains a polyurethane resin, and the inorganic filler has an average particle diameter of 0.001 to 100 μm. According to the present invention, a dental restorative material that has a high bending strength and a high surface hardness, and is excellent in transparency and cutting workability, and a resin material for dental cutting work containing the same can be provided.

The dental restorative material of the present invention is a dental restorative material that contains a resin matrix and an inorganic filler in an amount of 25 to 1,000 parts by mass per 100 parts by mass of the resin matrix, and in the dental restorative material, the resin matrix contains a polyurethane resin, and the inorganic filler has an average particle diameter of 0.001 to 100 μm. According to the present invention, a dental restorative material that has a high bending strength and a high surface hardness, and is excellent in transparency and cutting workability, and a resin material for dental cutting work containing the same can be provided.

A reactive resin component contains at least one radically curable unsaturated compound and at least one silanized filler. The proportion of all inorganic solids in the reactive resin component is at least 60 wt. % and the proportion of the at least one silanized filler, which has a grain diameter of 4 μm or smaller, is 0.5 to 60 wt. %, based on the reactive resin component. The reactive resin component can be used in a reactive resin system.

A reactive resin component contains at least one radically curable unsaturated compound and at least one silanized filler. The proportion of all inorganic solids in the reactive resin component is at least 60 wt. % and the proportion of the at least one silanized filler, which has a grain diameter of 4 μm or smaller, is 0.5 to 60 wt. %, based on the reactive resin component. The reactive resin component can be used in a reactive resin system.

A reactive resin component contains at least one radically curable unsaturated compound and at least one silanized filler. The proportion of all inorganic solids in the reactive resin component is at least 60 wt. % and the proportion of the at least one silanized filler, which has a grain diameter of 4 μm or smaller, is 0.5 to 60 wt. %, based on the reactive resin component. The reactive resin component can be used in a reactive resin system.

A coating for a medical device is described. The coating comprises: a surface layer; and optionally a base layer; wherein the surface layer comprises a polymer chain attached to an anti-clotting group, wherein the anti-clotting group is selected from a sulfonic acid group, a sulfonamide group, a sulfamic acid group, a hydrogen sulfate group and a conjugate base thereof. Also described is a medical device comprising the coating, and uses and methods involving the coating and the medical device.

A coating for a medical device is described. The coating comprises: a surface layer; and optionally a base layer; wherein the surface layer comprises a polymer chain attached to an anti-clotting group, wherein the anti-clotting group is selected from a sulfonic acid group, a sulfonamide group, a sulfamic acid group, a hydrogen sulfate group and a conjugate base thereof. Also described is a medical device comprising the coating, and uses and methods involving the coating and the medical device.