Kuraray Noritake Dental Inc.

Shumei Ishihara

Kenji Hatanaka

Mitsuru Takei

Mitsunobu Kawashima

Koichi Okada

Kenji Suzuki

Yamato Nojiri

Takuo Tsuruta

Naoki Nishigaki

Hiroshige Ishino

Misaki Ito

Nobusuke Kashiki

Mariko Sugiura

Mizuko Oshita

Tadashi Hashimoto

Mariko Kawana

Ling Hong

Akiko Tsuji

Kengo Futami

The present invention provides a resin composition for stereolithography that is easily shapable with good shape precision while reducing sedimentation of inorganic particles during storage, and a obtained three-dimensional shaped article thereby excels in mechanical characteristics such as flexural strength and flexural modulus, in addition to having a desirable shade and good shade stability. The present invention relates to a resin composition for stereolithography comprising a polymerizable monomer (a), a photopolymerization initiator (b), an inorganic particle (c) having an average particle diameter of 5 to 500 nm, and a hindered phenolic compound (d), wherein the content of the photopolymerization initiator (b) is 0.1 to 10 parts by mass relative to 100 parts by mass of the polymerizable monomer (a), the content of the inorganic particle (c) is 50 to 400 parts by mass relative to 100 parts by mass of the polymerizable monomer (a), and the content of the hindered phenolic compound (d) is 0.1 to 500 parts by mass relative to 100 parts by mass of the photopolymerization initiator (b).

Resin composition for stereolithography

The present invention provides a dental adhesive material kit that exhibits high adhesive property to tooth structure and dental prosthesis through photopolymerization while maintaining good ease of handling with the paste properties that undergo little change during long storage. The present invention relates to a dental adhesive material kit comprising: an aqueous adhesive dental composition (X) comprising a radical polymerizable monomer (a) containing an acidic group, a polymerization accelerator (b), water (c), and a radical polymerizable monomer (d) containing no acidic group; and a curable dental composition (Y) comprising a hydrophilic radical polymerizable monomer (d-1) containing no acidic group, a hydrophobic radical polymerizable monomer (d-2) containing no acidic group, a chemical polymerization initiator (e), a photopolymerization initiator (f), and a filler (g), the filler (g) being a filler treated with a surface treatment agent, and having an average particle diameter of 0.01 to 50.0 &#x3bc;m, the surface treatment agent comprising a silane coupling agent (A) represented by general formula [1], and an organosilazane (B) represented by general formula [2].

Dental adhesive material kit

The present invention provides a dental cement showing excellent storage stability, undergoing little change in paste properties during long-term storage, and having a small solidification risk during long-term storage. The present invention relates to a multi-part dental cement comprising: a first paste comprising an acid group-containing (meth)acrylic polymerizable monomer (a), a polyfunctional (meth)acrylic polymerizable monomer (b) containing no acid group, an oxidizing agent (c-1) of a chemical polymerization initiator, and a filler (d); and a second paste comprising a polyfunctional (meth)acrylic polymerizable monomer (b) containing no acid group, a reducing agent (c-2) of a chemical polymerization initiator, and a filler (e), wherein the filler (d) is treated with a surface treatment agent and has an average particle diameter of 0.01 to 50.0 &#x3bc;m, the surface treatment agent comprises a silane coupling agent (A) represented by the general formula (1) and an organosilazane (B) represented by the general formula (2).

Multi-part dental cement

The present invention provides a self-adhesive dental composite resin maintaining mechanical strength, showing excellent storage stability, undergoing little change in transparency and properties of the paste during long-term storage, and having a small solidification risk during long-term storage. The present invention relates to a self-adhesive dental composite resin comprising: an acid group-containing (meth)acrylic polymerizable monomer (a); a polyfunctional (meth)acrylic polymerizable monomer (b) containing no acid group; a photopolymerization initiator (c); and a filler (d), wherein the filler (d) is treated with a surface treatment agent and has an average particle diameter of 0.01 to 50.0 &#x3bc;m, the surface treatment agent comprises a silane coupling agent (A) represented by the following general formula (1):CH&#x2550;C(R)&#x2014;COO&#x2014;(CH)&#x2014;Si&#x2014;RR&#x2003;&#x2003;(1), andan organosilazane (B) represented by the following general formula (2):RRR&#x2014;Si&#x2014;NH&#x2014;Si&#x2014;RRR&#x2003;&#x2003;(2).

Self-adhesive dental composite resin

The present invention provides a dentinal tubule occlusion material excellent in terms of initial degree of dentinal tubule occlusion, resistance of dentinal tubule occlusion to acids, handling properties, and storage stability. The present invention relates to an one-pack type dentinal tubule occlusion material comprising fluorapatite particles (A) having an average particle diameter of 0.6 to 10 &#x3bc;m, inorganic particles (B) having an average particle diameter of 0.6 to 10 &#x3bc;m and reactive with water to form apatite, and a non-aqueous dispersant (C).

One-pack type dentinal tubule occlusion material

The present invention relates to providing a dental curable composition that, when cured, has high metal ion release ability and highly durable physical properties. The dental curable composition of the present invention includes: a sugar compound having an &#x2014;XM group, where &#x2014;X is an acid anion group and M is a metal cation; and a curable component.

Dental curable composition

A dentinal tubule sealant including apatite particles (A) having an average particle diameter of 500 nm or less, a filler (B) having an average particle diameter of 1 to 10 &#x3bc;m, and a dispersant (C), wherein the weight ratio (A/B) of the apatite particles (A) to the filler (B) is 0.05 to 15, the dentinal tubule sealant contains 15 to 95 parts by weight of the dispersant (C) relative to 100 parts by weight in total of the apatite particles (A) and the filler (B), and the total amount of the apatite particles (A), the filler (B), and the dispersant (C) is 85 parts by weight or more relative to 100 parts by weight of the dentinal tubule sealant. There is thereby provided a dentinal tubule sealant excelling in dentinal tubule sealability immediately after treatment, durability of dentinal tubule sealing, ease of operation, and storage stability.

One-component-type dentinal tubule sealant

The present invention provides a curable calcium phosphate composition for biological hard tissue repair that yields a cured product excellent in durability in a wet environment such as in a body or an oral cavity. The present invention relates to a curable calcium phosphate composition for biological hard tissue repair, including tetracalcium phosphate particles (A), calcium hydrogen phosphate particles (B), calcium carbonate particles (C), and water (D), the curable calcium phosphate composition including 5 to 75 parts by weight of the tetracalcium phosphate particles (A), 10 to 70 parts by weight of the calcium hydrogen phosphate particles (B), and 2 to 50 parts by weight of the calcium carbonate particles (C) per 100 parts by weight of the total of the tetracalcium phosphate particles (A), the calcium hydrogen phosphate particles (B), and the calcium carbonate particles (C).

Curable calcium phosphate composition for biological hard tissue repair, bone repair material, and various dental materials

The present invention provides a dentinal tubule sealing material excellent in durability of dentinal tubule sealing performance (acid resistance) and also in storage stability. The present invention relates to a dentinal tubule sealing material including tetracalcium phosphate particles (A), calcium hydrogen phosphate particles (B), calcium carbonate particles (C), and a non-aqueous dispersant (D), the dentinal tubule sealing material including 5 to 75 parts by weight of the tetracalcium phosphate particles (A), 10 to 70 parts by weight of the calcium hydrogen phosphate particles (B), and 2 to 50 parts by weight of the calcium carbonate particles (C) per 100 parts by weight of the total of the tetracalcium phosphate particles (A), the calcium hydrogen phosphate particles (B), and the calcium carbonate particles (C).

Dentinal tubule sealing material

A dental curable composition containing fluoroaluminosilicate glass particles (A), basic calcium phosphate particles (B1), acidic calcium phosphate particles (B2), a polyalkenic acid (C), tartaric acid (D), and water (E), wherein the dental curable composition contains 70 to 99 parts by weight of (A), 1 to 30 parts by weight in total of (B1) and (B2), 10 to 40 parts by weight of (C), 0.3 to 10 parts by weight of (D), and 10 to 90 parts by weight of (E) each relative to 100 parts by weight in total of (A), (B1), and (B2), and a Ca/P ratio of a sum of (B1) and (B2) is from 1.10 to 1.95. Accordingly, provided is a dental curable composition that is high in mechanical strength, particularly compressive strength, and excellent in remineralization capability.

Dental curable composition, and method for producing same

A method for inhibiting dentinal hypersensitivity by applying a dentinal hypersensitivity inhibitor on a dentin surface. The dentinal hypersensitivity inhibitor contains at least one tetracalcium phosphate particle, an alkali metal salt of phosphoric acid, and at least one acidic calcium phosphate particle. The tetracalcium phosphate particle has an average particle diameter of 0.5 to 40 &#x3bc;m. The dentinal hypersensitivity inhibitor contains a blended amount of the tetracalcium phosphate particle of 5 to 55 parts by weight relative to 100 parts by weight of a whole amount of the dentinal hypersensitivity inhibitor and a blended amount of the alkali metal salt of phosphoric acid of 1 to 100 parts by weight relative to 100 parts by weight of the tetracalcium phosphate particle.

Method for inhibiting dentinal hypersensitivity

Dentinal tubules sealing method using dentinal tubules sealant that is to be applied to a dentin surface to fill solid particles into dentinal tubules, wherein the dentinal tubules sealant comprises a water-based dispersing agent in which solid particles are dispersed and which has a solid/liquid ratio of from 0.3 to 2.6, and the method comprises applying the dentinal tubules sealant to a dentin surface to fill solid particles into dentinal tubules, and then removing a solid component adhering to the dentin surface by scrubbing using water. Thus, pains, hyperesthesia, and so on are allowed to be suppressed because dentinal tubules will be filled and sealed with solid particles and a curable composition is allowed to exhibit improved adhesive properties to a dentin surface because solid components adhering to the dentin surface can be removed by scrubbing using water.

Growing community of inventors

Tainai, Japan

Shumei Ishihara