Abstract: The present invention provides a dental filling kit that comprises a dental cleaning material and a self-adhesive dental composite resin, and that exhibits good adhesive properties to tooth structure, and good sealing properties for cavities. The present invention relates to a dental filling kit comprising: a self-adhesive dental composite resin (X) comprising a monomer (a) having an acidic group, a monomer (b) having no acidic group, a polymerization initiator (c), and a filler (d); and a dental cleaning material (Y) having a pH of 2.0 or more and less than 9.0.

Abstract: A composition comprises a zirconia powder, in which 55% or more thereof is monoclinic, and a stabilizer capable of suppressing phase transition of zirconia. An average particle diameter of zirconia particles and particles of the stabilizer is 0.06 ?m to 0.17 ?m. At least a portion of the stabilizer does not form a solid solution with zirconia.

Abstract: An object of the present invention is to provide a dental composition that exhibits small polymerization shrinkage stress, and provides excellent mechanical strength. The present invention relates to a dental composition comprising a compound (A), a monomer (B) having a solubility of 50 g/L or more in acetone at 25° C., and a polymerization initiator (C), wherein the compound (A) has a weight-average molecular weight of 1,000 to 80,000, and includes a Tg of less than 40° C., in addition to having a solubility of less than 50 g/L in acetone at 25° C. Preferably, the compound (A) comprises a compound having a polymerizable group.

Abstract: The present invention provides a dental cement that excels in ease of handling without its powder-to-liquid ratio greatly affecting ease of handling such as kneadability or ease of filling as compared to traditional dental portland cements, and that can provide a hardened material having excellent compressive strength. The present invention relates to a dental cement comprising a powder component and a liquid component, wherein: the powder component comprises a portland cement powder (A), the liquid component comprises water (C), and at least one of the powder component and the liquid component comprises a cationic surfactant (B). Preferably, the liquid component comprises the cationic surfactant (B).

Abstract: The present invention provides a dental restorative curable composition that has high mechanical strength and toughness and has excellent water resistance and smoothness/gloss durability in the form of a cured product, a dental composite resin comprising the dental restorative curable composition, and a dental mill blank comprising a cured product of the dental restorative curable composition. The present invention relates to a dental restorative curable composition comprising: a (meth)acrylic acid ester compound (A) which has at least one polymer structure selected from the group consisting of a polycarbonate, a polyarylate, and an aromatic polysulfone and in which terminal hydroxy residues derived from repeating units constituting the polymer structure are directly (meth)acryloylated; a (meth)acrylic acid ester compound (B) having two or more (meth)acryloyloxy groups (excluding the (meth)acrylic acid ester compound (A)); an inorganic filler (C) having an average primary particle diameter of 0.

Abstract: An object of the present invention is to provide a dental composition that exhibits small polymerization shrinkage stress, and provides excellent mechanical strength. The present invention relates to a dental composition comprising a compound (A) having a weight-average molecular weight of 2,000 or more, a monomer (B), and a polymerization initiator (C), wherein the compound (A) having a weight-average molecular weight of 2,000 or more has a glass transition region including a temperature range of 20 to 40° C., and the monomer (B) excludes the compound (A) having a weight-average molecular weight of 2,000 or more. The compound (A) having a weight-average molecular weight of 2,000 or more has a weight-average molecular weight of preferably less than 50,000.

Abstract: The present invention provides a pre-sintered body for obtaining a zirconia sintered body that can satisfy both high strength and high translucency, and a method of production of such a pre-sintered body. The present invention relates to a zirconia pre-sintered body comprising a secondary aggregate having an average particle diameter of 275 nm or less, the secondary aggregate comprising zirconia, and a stabilizer capable of preventing a phase transformation of zirconia, the secondary aggregate comprising a larger particle having an average primary particle diameter of 100 nm or more and 200 nm or less, and a smaller particle having an average primary particle diameter of 10 nm or more and less than 60 nm.

Abstract: The present invention provides curable calcium phosphate dental cement that has excellent sealability for dentinal tubule, is expected to form fluoroapatite, and has a curing time that is advantageous for clinical use. The present invention is directed to curable calcium phosphate dental cement including: a first material as powder or nonaqueous paste; and a second material as liquid or aqueous paste, and, in the curable calcium phosphate dental cement, the first material comprises tetracalcium phosphate (A), alkali metal salt of phosphoric acid (B), and acidic calcium phosphate (C), the second material comprises water (D), and at least one of the first material and the second material comprises a fluorine compound (E) and an organic acid (F) having a molecular weight of 10000 or less.

Abstract: A composition comprises a zirconia powder, in which 55% or more thereof is monoclinic, and a stabilizer capable of suppressing phase transition of zirconia. An average particle diameter of zirconia particles and particles of the stabilizer is 0.06 ?m to 0.17 ?m. At least a portion of the stabilizer does not form a solid solution with zirconia.

Abstract: The present invention provides a granule and green compact suited for obtaining a high-translucency and high-strength zirconia sintered body, and a high-density and uniform pre-sintered body. The invention also provides methods of production of such a granule and green compact. The present invention relates to a granule comprising zirconia, a stabilizing agent capable of preventing a phase transformation of zirconia, and a binder, the granule having a compression ratio R of 0.46 to 0.53 as calculated by the formula (1) below when tapped and filled into a columnar die in compliance with JIS R 1628:1997, and compressed by uniaxial pressing at a rate of 1 mm/s to 33 MPa, R=(H?D)/H??(1) wherein H represents a height of the granule tapped and filled into the columnar die before applying pressure, and D represents an amount of strain up to 33 MPa.

Abstract: The present invention provides a dental ceramic coloring solution with which the pink shade needed for dental use can be imparted while reducing a decrease in the strength of a dental ceramic. The present invention relates to a coloring solution for coloring a dental ceramic, comprising a coloring component and a solvent, wherein the coloring component comprises an Er component and a Co component.

Abstract: A composition may include granules in which zirconia particles are aggregated. The granules may have an average circularity of 0.81 or greater based on a projected image. The zirconia crystal system of the zirconia particles may be 20% or more monoclinic. An angle of repose of the composition, measured in accordance with JIS R9301-2-2, may be in a range of from 20 degrees to 35 degrees.

Abstract: The present invention provides a dental glass composition that has excellent fixability to dental prostheses, and that does not need firing and fixing to layer color or enable a build-up of porcelain thereon. The present invention relates to a dental glass composition comprising a glass powder (A) and a wax component (B). The glass powder (A) has an average particle diameter of preferably 0.05 ?m to 50 ?m. The wax component (B) has a boiling point of preferably 400° C. or less.

Abstract: A composition includes granules in which zirconia particles are aggregated. The granules have an average circularity of 0.81 or greater based on a projected image.

Abstract: The present invention provides a zirconia sintered body that has high strength and is machinable. The present invention relates to a zirconia sintered body comprising zirconia, a stabilizing agent capable of preventing a phase transformation of zirconia, a sintering aid, and a needle-shaped metal oxide. Preferably, the sintering aid comprises niobium pentoxide, and the content of the niobium pentoxide is 5 to 15 parts by mass with respect to total 100 parts by mass of the zirconia and the stabilizing agent. Preferably, the stabilizing agent comprises yttria, and the content of the yttria is 2.5 to 10 mol % with respect to the total number of moles of the zirconia and the yttria.

Abstract: The present invention provides a zirconia pre-sintered body that exhibits suitable shade, translucency, and strength with short firing.

Abstract: The present invention provides a paste-like dental glass composition having good ease of handling due to a reduction in paste runniness while enabling accurate shade adjustments with no discoloration to hues such as black or grey after firing. The present invention relates to a paste-like dental glass composition comprising a glass powder (A), and an organic solvent (B) having two or less hydroxyl groups within the molecule and a viscosity at 20° C. of 2,500 mPa·s or less, and being essentially free of an organic compound having three or more hydroxyl groups within the molecule.

Abstract: A composition comprises a zirconia powder, in which 55% or more thereof is monoclinic, and a stabilizer capable of suppressing phase transition of zirconia. An average particle diameter of zirconia particles and particles of the stabilizer is 0.06 ?m to 0.17 ?m. At least a portion of the stabilizer does not form a solid solution with zirconia.

Abstract: A composition comprises a zirconia powder, in which 55% or more thereof is monoclinic, and a stabilizer capable of suppressing phase transition of zirconia. An average particle diameter of zirconia particles and particles of the stabilizer is 0.06 ?m to 0.17 ?m. At least a portion of the stabilizer does not form a solid solution with zirconia.

Abstract: The present invention provides a zirconia pre-sintered body having excellent machinability and having a low probability of pillar fracture or chipping during milling. A method of production of such a zirconia pre-sintered body is also provided. The present invention relates to a zirconia pre-sintered body comprising zirconia, and a stabilizer capable of reducing a phase transformation of zirconia, the content of the stabilizer being 3 to 8 mol % relative to the total mole of the zirconia and the stabilizer, at least a part of the stabilizer being not dissolved in zirconia as a solid solution, and the zirconia pre-sintered body having a Vickers hardness of 65 to 135 HV 5/30 as measured in compliance with JIS Z 2244:2009.