Abstract: A dental cement includes: a first component containing a glass powder; a second component containing a polycarboxylic acid-based polymer, an organic polybasic acid, and water. The glass powder contains zinc and silicon. A solubility of a salt of a conjugate base of the organic polybasic acid and zinc ions in water at 20° C. is greater than or equal to 1 g/100 mL.

Abstract: To provide a dental primer previously applied for strongly bonding a dental restoration made of various kinds of materials to dentine in a dental treatment field, and a dental adhesive set comprised of the dental primer and a dental adhesive having high dentine adhesiveness when used with the dental primer, the dental primer includes (meth)acrylate having an acid group, water, a water-soluble volatile organic solvent, and a vanadium compound, and can further include a filler and (meth)acrylate not having an acid group, while the dental adhesive set is comprised of the dental primer and a dental adhesive which includes (meth)acrylate having an acid group, (meth)acrylate not having an acid group, hydroperoxide as a polymerization initiator, a thiourea derivative as a reducing agent, and a vanadium compound as a polymerization accelerator, and can further include a filler.

Abstract: A one-pack type dental adhesive composition that does not require a pre-treatment such as an etching treatment and a priming treatment and can surely adhere a dental restoration material to a tooth structure and keep an adhesive effect over a long period of time, comprised of a polymerizable composition containing (a) 1˜5% by weight of a polymerizable monomer containing a phosphoric acid group, (b) 10˜40% by weight of a polymerizable monomer containing a plurality of carboxyl groups in one molecule, or being readily reactive with water to generate a plurality of carboxyl groups in one molecule, (c) 20˜40% by weight of an acid group-free polymerizable monomer or a mixture of two or more acid group-free polymerizable monomers, both having a solubility of water at 25° C. of 25% by weight or less, and (d) 15˜50% by weight of water, with (e) 0.1˜5.

Abstract: To provide a one component dental composition in which a polymerzable compound having an acidic group is coexisted with a reducing agent such as a tertiary amine under the existence of water, and which is not cured with time during preservation, the dental composition comprises the polymerlizable compound having an acidic group, the reducing agent, water and an aluminum oxide powder, wherein it is preferable that 0.4 mol equivalent or less of the acidic group of the polymerizable compound having the acidic group and 0.05 mol equivalent or less of a reduction part of the reducing agent are contained per 100 m2 of a specific surface area of an aluminum oxide powder and that 5 to 35 weight parts of the polymerizable compound having the acidic group, 0.1 to 5 weight parts of the reducing agent, 10 to 55 weight parts of water, and 0.1 to 5 weight parts of the aluminum oxide powder are contained.

Abstract: A process for preparing a dental prosthesis is disclosed, including preparing a wax pattern of an objective dental prosthesis based on a duplicated model having an intraoral shape, investing the wax pattern in an investment material, and removing the wax pattern to prepare a mold, wherein a composite resin is charged under pressure into the mold, and the composite resin is cured under heat and pressure, the process of the present invention enables one to obtain a dental prosthesis that has suitable esthetics and superior mechanical properties and free from fear of pulp irritation by the unpolymerized monomer, and particularly suitable for the preparation of inlays, crowns, etc.

Abstract: A one-pack type dental adhesive composition that does not require a pre-treatment such as an etching treatment and a priming treatment and can surely adhere a dental restoration material to a tooth structure and keep an adhesive effect over a long period of time, comprised of a polymerizable composition containing (a) 1˜5% by weight of a polymerizable monomer containing a phosphoric acid group, (b) 10˜40% by weight of a polymerizable monomer containing a plurality of carboxyl groups in one molecule, or being readily reactive with water to generate a plurality of carboxyl groups in one molecule, (c) 20˜40% by weight of an acid group-free polymerizable monomer or a mixture of two or more acid group-free polymerizable monomers, both having a solubility of water at 25° C. of 25% by weight or less, and (d) 15˜50% by weight of water, with (e) 0.1 ˜5.

Abstract: A dental resin material which is formed into a dental prosthesis by milling processing is disclosed, comprising an acrylic resin polymer containing from 20 to 70% by weight of an inorganic filler having a mean particle size of from 0.01 to 0.04 .mu.m in diameter. A process for producing a dental resin material is also disclosed, which comprises polymerizing for curing a mixture comprising a combination of from 20 to 70% by weight of an inorganic filler having a mean particle size of from 0.01 to 0.04 .mu.m in diameter, a methacrylate or acrylate monomer having at least one unsaturated double bond, and a heat polymerization initiator while elevating the pressure and heating under the conditions that the pressure is from 50 to 300 MPa and that the temperature is from 100 to 200.degree. C.