Abstract: A (meth)acrylic ester compound represented by the general formula (1) and a dental material containing the compound, wherein, in the formula, R11 represents a divalent aromatic group; R12 represents a hydrogen atom or a methyl group; R13 represents an aryl group; R14 represents a hydrogen atom or a methyl group; and X11, represents an oxygen atom or a sulfur atom. A polymerizable composition containing the (meth)acrylic ester compound and an optical part obtained by polymerizing the polymerizable composition are also provided. The cured composition can provide advantageous physical and optical properties.

Abstract: A (meth)acrylic ester compound represented by the general formula (1) and a dental material containing the compound, wherein, in the formula, R11 represents a divalent aromatic group; R12 represents a hydrogen atom or a methyl group; R13 represents an aryl group; R14 represents a hydrogen atom or a methyl group; and X11, represents an oxygen atom or a sulfur atom. A polymerizable composition containing the (meth)acrylic ester compound and an optical part obtained by polymerizing the polymerizable composition are also provided. The cured composition can provide advantageous physical and optical properties.

Abstract: Disclosed is a dental material comprising a sulfur-containing unsaturated carboxylic acid ester compound having a substituent containing a sulfur atom and at least two (meth)acrylic acid residues through an oxygen atom bonded to a secondary or tertiary carbon atom, specifically, a dental material comprising a polymerizable monomer (A) represented by the following formula (1): 1

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 dental floss having excellent tensile strength, impact strength, water resistance, creep resistance and use feeling and composed of a drawn multifilament of an ultrahigh-molecule-weight polyolefin having an intrinisic viscosity of at leasat 5 dl/g or an ultrahigh-molecular-weight ethylene-alpha-olefin copolymer containing an alpha-olefin having at least 3 carbon atoms in an amount of 0.1 to 20 on an average per 1000 carbon atoms. An interdental cleaning tool comprising the dental floss stretched taut between protruding portions of the tool is also provided.

Abstract: Adhesives for ceramics obtained as first adhesives for ceramics according to the invention are excellent in bond properties as well as in water resistance because they contain first acidic compounds such as organic carboxylic acids in addition to silane coupling agents, polymerizable monomers and polymerization catalysts. Further, adhesives for ceramics obtained as second adhesives for ceramics according to the invention are excellent in bond properties as well as in dependability and water resistance because they contain metal salts in addition to silane coupling agents, polymerizable monomers and polymerization catalysts. Furthermore, adhesives for ceramics obtained as third adhesives for ceramics according to the invention are excellent in bond properties as well as dependability and water resistance because they contain second acidic compounds selected from among metal salts and organic carboxylic acid anhydrides in addition to silane coupling agents, polymerizable monomers and polymerization catalysts.

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.