Dental material, which contains at least one radically polymerizable monomer, at least one radiopaque filler, at least one composite filler, at least one inorganic filler and at least one initiator for the radical polymerization. The dental material is particularly suitable as dental filling material.

Dental material, which contains at least one radically polymerizable monomer, at least one radiopaque filler, at least one composite filler, at least one inorganic filler and at least one initiator for the radical polymerization. The dental material is particularly suitable as dental filling material.

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).

A dental polymerizable composition includes: a first component containing a (meth)acrylate, a pentavalent vanadium compound, and a thiourea derivative; and a second component containing a (meth)acrylate and an organic peroxide.

The invention relates to dentistry, and more particularly to a novel agent in the form of a gel for the treatment and/or prophylaxis of conditions characterized by loss of minerals and salts front tooth enamel. The claimed agent, provided in gel foam, for the treatment and/or prophylaxis of conditions characterized by loss of minerals and salts from tooth enamel contains the following ingredients: 19 wt % glycerin, 10 wt % xylitol 2.3 wt % hydroxyethyl cellulose, 0.09 wt % guar gum, 1 5 wt % calcium glycerophosphate, 0.12 wt % magnesium chloride, 0.9 wt % non-ionic surfactant, 0.24 wt % preservative, 0.04 wt % flavouring agent, she remainder water. The claimed agent provides effective treatment and prophylaxis of the demineralization/hypomineralization of dental tissue, mild forms of fluorosis, and the adverse consequences thereof.

The invention relates to dentistry, and more particularly to a novel agent in the form of a gel for the treatment and/or prophylaxis of conditions characterized by loss of minerals and salts front tooth enamel. The claimed agent, provided in gel foam, for the treatment and/or prophylaxis of conditions characterized by loss of minerals and salts from tooth enamel contains the following ingredients: 19 wt % glycerin, 10 wt % xylitol 2.3 wt % hydroxyethyl cellulose, 0.09 wt % guar gum, 1 5 wt % calcium glycerophosphate, 0.12 wt % magnesium chloride, 0.9 wt % non-ionic surfactant, 0.24 wt % preservative, 0.04 wt % flavouring agent, she remainder water. The claimed agent provides effective treatment and prophylaxis of the demineralization/hypomineralization of dental tissue, mild forms of fluorosis, and the adverse consequences thereof.

An implant abutment according to the present invention is a dental implant abutment with an enhanced shock distribution function, the dental implant abutment comprising: an upper coupling portion that is an upper portion coupled to an artificial tooth; a lower coupling portion that is a lower portion coupled to a fixture, and an exposed portion that is exposed to the outside between the upper coupling portion and the lower coupling portion and has a plurality of flow grooves. By forming a plurality of grooves in the exposed portion of the implant abutment, the exposed portion of the implant abutment performs a shock distribution function as if it shakes elastically and distributes an occlusal force of teeth exerted to the implant, thereby providing a buffering function of relieving an impact on an area where the implant is inserted.

A photocurable composition includes a photopolymerizable component and a photopolymerization initiator. In a case in which a rectangular sheet-like test piece is produced by photomodeling under conditions in which the photocurable composition is irradiated with visible light having a wavelength of 405 nm at an irradiation dose of 12 mJ/cm.sup.2 to form a cured layer with a thickness of 50 .Math.m, the cured layer is stacked in a thickness direction thereof to form a rectangular sheet-like modeling product with a length of 40 mm, a width of 10 mm, and a thickness of 1 mm, and the modeling product is irradiated with ultraviolet rays having a wavelength of 365 nm at an irradiation dose of 10 J/cm.sup.2 to produce the test piece, the test piece has an X-ray absorption coefficient of from 9.0 cm.sup.-1 to 34.0 cm.sup.-1.

The present invention relates to particles comprising a core, in particular a magnetic core, and a first coating of a first shell material, wherein a second coating of a second shell material is applied to the surface of the first coating facing away from the core, the second shell material is different from the first shell material and has a higher refractive index than the first shell material.

The present invention relates to particles comprising a core, in particular a magnetic core, and a first coating of a first shell material, wherein a second coating of a second shell material is applied to the surface of the first coating facing away from the core, the second shell material is different from the first shell material and has a higher refractive index than the first shell material.