Abstract: A dropping container includes a cylindrical body, a dropping portion having a pressure valve for closing an opening in the dropping container body such that it can be opened by pressure and a thin tube which is open to the outside. The pressure valve includes a sealing plug portion formed of an elastic body or a rigid body and a pressing member, formed of an elastic body, for pressing the sealing plug portion against the opening to close the opening, a movable plug supplies the content of the cylindrical body to the dropping portion.

Abstract: A curable dental adhesive composition of the type including polymerizable monomer and polymerization initiator may be easily prepared and applied to a tooth surface by using a tool which includes fibrous or sponge material, adapted to fit within a person's mouth, and carrying at least part of the polymerization initiator. Polymerizable monomer and any remaining polymerization initiator as well as filler and other ingredients may be brought into contact with the tool to form the curable composition just prior to applying the composition to the tooth surface. The tool may be part of a kit which also includes a container for polymerizable monomer and, as necessary, one or more additional containers for remaining polymerization initiator(s), fillers, etc. No separate mixing container is required.

Abstract: A polymerization initiator composition comprising 100 parts by weight of an organic boron compound (A) and 10 to 150 parts by weight of an aprotic solvent (B) having a boiling point of 30 to 150.degree. C.; and a dental or surgical adhesive composition containing the above polymerization initiator composition.

Abstract: There is provided a dental composition for relieving dentin hypersensitivity, which occludes dentinal tubules having an opening on the surface of dentin to relieve dentin hypersensitivity thereby to give an immediate relieving effect and to maintain the relieving effect for a long time.The dental composition for relieving dentin hypersensitivity, which comprises (A) a low molecular weight compound which can produce a precipitate which is hardly soluble in water when it reacts with a calcium compound, or which comprises the above component (A), (B) a calcium compound and/or (C) an aqueous polymer emulsion having a particle size smaller than that of a dentinal tubule and forming an agglomerate or a hardly soluble gel larger than the diameter of a dentinal tubule when it reacts with a calcium compound.

Abstract: A polymerization initiator composition comprising 100 parts by weight of an organic boron compound (A) and 10 to 150 parts by weight of an aprotic solvent (B) having a boiling point of 30.degree. to 150.degree. C.; and a dental or surgical adhesive composition containing the above polymerization initiator composition.

Abstract: A curable composition comprising a polymerizable monomer having an acidic group in its molecule and an initiator. The composition has a viscosity in the range of from 100 to 30,000 cP at 37.5.degree. C. and may have additionally contain other polymerizable monomer and/or a filler. The composition is applied to a tooth surface directly or after applying a primer composition. There is also provided the primer composition which comprises a polymerizable monomer having an acidic group and a solvent.

Abstract: There is provided a dental composition for relieving dentin hypersensitivity comprising (A) an aqueous emulsion component which contains, as emulsion particles, polymer particles having a diameter smaller than that of a dentinal tubule and forming an agglomerate larger than the diameter of a dentinal tubule when they react with a calcium compound, and (B) a water-soluble organic acid component or a water-soluble salt component thereof, a calcium salt of the organic acid being insoluble or hardly soluble in water. Using this composition, dentinal tubules open to the surface of dentin are occluded to relieve dentin hypersensitivity immediately and lastingly.

Abstract: An adhesive composition comprising (A) 98 to 60 parts by weight of a polymerizable monomer mixture containing 2 to 25% by weight of a monomer having acidic group, (B) 2 to 40 parts by weight of a polymer, preferably a polymer which can form a solution or dispersion having the property that the solution or dispersion of 10 parts by weight of the polymer in 90 parts by weight of methyl methacrylate shows a viscosity of 100 cps or less at 25.degree. C., and (C) 0.01 to 35 parts by weight of a polymerization initiator, provided that the total amount of the components (A), (B) and (C) is 100 parts by weight.According to the present invention, there can be provided an adhesive composition which is easy to handle for the restoration treatment of a tooth, so that adhesion dental treatment can be reliably carried out.

Abstract: A primer composition for the treatment of a tooth surface, which comprises a) at least one metal compound selected from the group consisting of an iron compound, a copper compound and a cobalt compound, b) a polymerizable monomer having an acidic group, and c) water or water and an organic solvent miscible with water; and a method of forming an adhesive layer on a tooth surface, which comprises applying this primer composition to the tooth surface and then applying a curable composition containing trialkylborane or partial oxide thereof and a polymerizable monomer. According to the present invention, both the enamel and the dentin of a tooth can be simultaneously surface-treated without acid treatment or washing with water, and adhesion dental treatment can be reliably carried out by a simple operation without causing pains on a patient.

Abstract: A curable composition comprising a polymerizable monomer having an acidic group in its molecule and an initiator. The composition has a viscosity in the range of from 100 to 30,000 cP at 37.5.degree. C. and may have additionally contain other polymerizable monomer and/or a filler. The composition is applied to a tooth surface directly or after applying a primer composition. There is also provided the primer composition which comprises a polymerizable monomer having an acidic group and a solvent.

Abstract: A primer solution composition to be applied to a tooth surface, which comprises (a) at least one metal compound selected from the group consisting of an iron compound, a copper compound and a cobalt compound, (b) a polymerizable monomer having an acidic group and (c) a polymerizable monomer having no acidic group, and which has adhesion properties to a tooth surface; and a method of forming an adhesive layer on a tooth surface, which comprises applying said primer solution composition comprising (a) to a tooth surface, and applying thereto a curing composition containing trialkylboron or its partial oxidate and a polymerizable monomer.

Abstract: A curable composition comprising a polymerizable monomer having an acidic group in its molecule and an initiator. The composition has a viscosity in the range of from 100 to 30,000 cP at 37.5.degree. C. and may have additionally contain other polymerizable monomer and/or a filler. The composition is applied to a tooth surface directly or after applying a primer composition. There is also provided the primer composition which comprises a polymerizable monomer having an acidic group and a solvent.

Abstract: A curable composition effective for use for dental adhesive and exhibiting superior water-resistant bonding performance and high bonding strength onto enamel, dentine and dental alloys without imparting to dental pulp any irritative influence, which composition comprises(A) a monofunctional monomer based on (meth)acrylate,(B) a polyfunctional monomer based on (meth)acrylate,(C) an acidic group-containing monomer based on (meth)acrylate having in the moleucle at least one (meth)acryloyloxyl group and(D) a trialkylboron or its oxide.

Abstract: A curable composition is provided, comprising a monofunctional (meth)arcylate monomer, a poly functional (meth)acrylate monomer, a (meth)acrylate monomer containing an acidic group and at least one (meth)acryloyloxyl group in its molecule, a monofunctional (meth)acrylamide monomer, and a trialkylboron and/or a partial oxide thereof. The composition has improved low-temperature curability at approximately room temperature and water-resistant adherence, and excellent adhesiveness to tooth substances including enamel and dentin and dental alloys, and gives no adverse influence of stimulation to dental pulp. Most preferably, the composition is used as a bonding agent for dental composite resins.