Abstract: Disclosed is a dental composition, comprising unsaturated double bond-containing monomers and/or oligomers, a catalytic amount of polymerization initiator to initiate polymerization, and a filler, wherein the dental composition comprises an organic nanotube containing an antibacterial or anticariogenic material to inhibit or prevent tooth decay. The dental composition comprises an organic nanotube containing an antibacterial or anticariogenic material, thus uniformly and continuously exhibiting anticariogenic and antibacterial activities, while avoiding deterioration in physical properties required for the dental material.

Abstract: An intraoral radiation device comprises a biocompatible intraoral receptacle with an X-ray source therein.

Abstract: Fillers containing silica-zirconia nanoclusters are disclosed. The fillers may be prepared by mixing a sol of silica nanoparticles with a sol of preformed, crystalline nanozirconia particles. The fillers provide desirable optical properties, such as opalescence, and are useful in dental compositions.

Abstract: The application of certain (preferably photocurable) composite materials comprising a monomer with a polyalicyclic structure element as a dental sealing material is described herein. A description is also provided of novel polymerizable monomers comprising at least one polyalicyclic structure element and certain ethylenic structure elements, which are particularly suitable for use in a composite material to be applied and their application in a composite material.

Abstract: Disclosed is a dental cement composition made up of ingredients comprising the nanoparticles of dicalcium and tricalcium silicate, bismuth oxide, gypsum, zeolite and strontium carbonate. The dental cement can also be used as bone cement, pulpotomy agent, pulp capping material, dental implant material, perforation repair material, and root-end filling material.

Abstract: Nanoparticulate material containing a matrix and embedded therein a radiopacifier are bioactive, show a high alkaline capacity and are radio-opaque. Compositions and formulations including such material are particularly useful in advanced dental applications, such as dental fillings and/or disinfection.

Abstract: A hardenable dental composition that includes a polymerizable component and an organogelator.

Abstract: A dental composition of the present invention includes: a polymerizable monomer component (A); and an amorphous filler (B) having an average particle size of 1 to 20 ?m and including silica-based fine particles and coatings of an oxide that cover the surfaces of the silica-based fine particles. The oxide contains a zirconium atom, a silicon atom, and an oxygen atom. The dental composition contains 20 to 500 parts by weight of the filler (B) per 100 parts by weight of the polymerizable monomer component (A). The dental composition has a viscosity of 10 to 800 Pa·s. It is preferable that the filler (B) contain spherical particles, and that the percentage of the spherical particles in the filler (B) be at least 60%.

Abstract: Dental compositions and disulfide monomers are described. The disulfide monomer comprise a disulfide backbone group wherein each of the sulfur atoms are bonded to an ethylenically unsaturated group via a divalent linking group and the linking group comprises at least one heteroatom; and at least one other monomer ethylenically unsaturated monomer.

Abstract: A hardenable dental composition that includes a polymerizable component and an organogelator.

Abstract: A dental composition of the present invention includes: a polymerizable monomer (A); an amorphous filler (B) having an average particle size of 1 to 20 ?m and including silica-based fine particles and coatings of an oxide that cover the surfaces of the silica-based fine particles; and inorganic particles (C) having an average particle size of 0.1 to 1.0 ?m. The oxide contains a zirconium atom, a silicon atom, and an oxygen atom. It is preferable that the dental composition contain 50 to 400 parts by weight of the filler (B) and 100 to 400 parts by weight of the inorganic particles (C) per 100 parts by weight of the polymerizable monomer (A).

Abstract: The present invention relates to a new and inventive composition for implant cleaning and/or debridement of hard surfaces in the oral cavity, which comprises optimally activated nanoparticles of TiO2, having a mean particle diameter (D50) of about 10-100 nm at a concentration between 0.5-500 g/L, and H2O2, at a concentration of at the most 7.5% by volume, said composition being antibacterial, without causing microbial resistance, and anti-inflammatory, and wherein said composition further comprises solid microparticles, having a mean particle diameter (D50) of about 100-200 ?m at a concentration between 0.5-300 g/L, for improved mechanical debridement and/or cleaning of rough surfaces in the oral cavity and/or on an implant.

Abstract: Present embodiments include composite dental materials for use in fillings and crowns, and methods of making the same. The composite materials can include biocompatible dental resin matrices and filler materials. The filler materials can include various types of magnetic nanoparticles. Additional embodiments include method of forming composite dental materials using a magnetic field and methods for forming aluminum oxide (Al2O3) nanoparticles. Other embodiments according to present teachings include methods for filling dental cavities and forming dental crowns.

Abstract: Dental compositions and disulfide monomers are described. The disulfide monomer comprise a disulfide backbone group wherein each of the sulfur atoms are bonded to an ethylenically unsaturated group via a divalent linking group and the linking group comprises at least one heteroatom; and at least one other monomer ethylenically unsaturated monomer.

Abstract: Solar cells having active layers that include poly(3-alkylthiophene) nanowires.

Abstract: Dental articles are produced using relatively low sintering temperatures to achieve high density dental articles exhibiting strengths equal to and greater than about 700 MPa. Ceramic powders comprised of nanoparticulate crystallites are used to manufacture dental articles. The ceramic powders may include sintering agents, binders and other similar additives to aid in the processing of the ceramic powder into a dental article. The ceramic powders may be processed into dental articles using various methods including, but not limited to, injection molding, gel-casting, slip casting, or electroforming, hand, cad/camming and other various rapid prototyping methods. The ceramic powder may be formed into a suspension, pellet, feedstock material or a pre-sintered blank prior to forming into the dental article.

Abstract: A polymeric composition comprising modified-TiO2 nanoparticles, with or without a solvent, and polymer precursors; wherein the modified-TiO2 nanoparticles comprise titanium dioxide nanoparticles modified with a short-chain unsaturated compound comprising 2 to 10 carbon atoms. The polymeric composition may be used in dental compositions such as dental adhesives, dental composites, and dental sealants.

Abstract: A tooth bleaching catalytic, the manufacturing method and the applications thereof are provided, wherein the tooth bleaching catalytic comprises a plurality of mesoporous silica nano-particles (MSNs), and the MSNs at least comprise a condensate having histidine, silane and a plurality of metal ions.

Abstract: An aqueous dental glass ionomer composition comprising (a) a reactive particulate glass, and (b) a linear or branched polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the linear or branched polymer comprising acidic groups has a polymer backbone and optionally pendant side chains, (c) optionally dispersed nanoparticles, and (d) optionally a low molecular compound, characterized in that the glass ionomer composition comprises —SxH groups, wherein x is an integer of from 1 to 6, which crosslink the particulate glass and/or the linear polycarboxylic acid and/or the optional dispersed nanoparticles and/or the optional low molecular compound.

Abstract: Nanoparticulate material containing a matrix and embedded therein a radiopacifier are bioactive, show a high alkaline capacity and are radio-opaque. Compositions and formulations including such material are particularly useful in advanced dental applications, such as dental fillings and/or disinfection.

Abstract: The present invention provides polymer composites reinforced with high aspect ratio reinforcing fillers selected from calcium phosphate nanofibers, nanoplates, submicron fibers, submicron plates, and combinations thereof. The mechanical and biological properties of the inventive composites are enhanced significantly over current polymer composites and may be employed in various biomedical applications, such as dental restorations.

Abstract: The application of certain (preferably photocurable) composite materials comprising a monomer with a polyalicyclic structure element as a dental sealing material is described herein. A description is also provided of novel polymerizable monomers comprising at least one polyalicyclic structure element and certain ethylenic structure elements, which are particularly suitable for use in a composite material to be applied and their application in a composite material.

Abstract: There are provided a novel polymerizable composition having an X-ray contrast property and excellent transparency, a cured product thereof, and a composite material comprising powder of the cured product. More specifically, there are provided a polymerizable composition comprising (A) an inorganic oxide having an X-ray contrast property and an average particle diameter of 100 nm or smaller, (B) a surface modifier, (C) a polymerizable compound and (D) a polymerization initiator, a cured product obtained by polymerizing these components, and a composite material comprising powder of the cured product.

Abstract: A composition for dental use containing a polymerizable monomer (a) having an aromatic ring and a hydroxyl group, a polymerizable monomer (b) having an aromatic ring without having any hydroxyl groups, and a polymerizable monomer (c) other than the polymerizable monomers (a) and (b), wherein the composition for dental use contains the polymerizable monomers (a), (b), and (c) in an amount of from 10 to 30% by weight, from 50 to 70% by weight, and from 10 to 30% by weight, respectively, of all the polymerizable monomers. The composition for dental use of the present invention can be suitably used as a product capable of substituting a part or all of a natural tooth in the field of dental therapy.

Abstract: Disclosed is a dental cement composition made up of ingredients comprising the nanoparticles of dicalcium and tricalcium silicate, bismuth oxide, gypsum, zeolite and strontium carbonate. The dental cement can also be used as bone cement, pulpotomy agent, pulp capping material, dental implant material, perforation repair material, and root-end filling material.

Abstract: The invention relates to a carbon nanotube composite material, to methods of its production and to uses of such composite material.

Abstract: A method of forming an implant to be implanted into living bone is disclosed. The method comprises the act of roughening at least a portion of the implant surface to produce a microscale roughened surface. The method further comprises the act of immersing the microscale roughened surface into a solution containing hydrogen peroxide and a basic solution to produce a nanoscale roughened surface consisting of nanopitting superimposed on the microscale roughened surface. The nanoscale roughened surface has a property that promotes osseointegration.

Abstract: A dental composite containing a nanoparticulate filler has a resin matrix with structural element (Ib) R is an open-chain and/or cyclic alkylene, arylene, or alkylene arylene with 1-10 C, optionally modified by oxygen, sulfur, carboxyl or amino, R1 is an open-chain and/or cyclic alkylene, arylene, or alkylene arylene with 1-10 C, optionally modified by oxygen, sulfur, carboxyl or amino; R? is an open-chain and/or cyclic alkyl, alkenyl, aryl, alkyl aryl, or aryl alkyl with 1-20 C; B and B? are identical or different and are a straight-chain or branched organically polymerizable group with (meth)acrylate residue; R3 are identical or different and a bond to another Si or hydrogen, alkyl with 1-10 C, or a bond to another metal atom; a is 1 or 2 and b is 0 or 1.

Abstract: Disclosed is a dental composition, comprising unsaturated double bond-containing monomers and/or oligomers, a catalytic amount of polymerization initiator to initiate polymerization, and a filler, wherein the dental composition comprises an organic nanotube containing an antibacterial or anticariogenic material to inhibit or prevent tooth decay. The dental composition comprises an organic nanotube containing an antibacterial or anticariogenic material, thus uniformly and continuously exhibiting anticariogenic and antibacterial activities, while avoiding deterioration in physical properties required for the dental material.

Abstract: The present invention is directed to compositions comprising at least one nitric oxide donor and at least one second therapeutically active agent with antimicrobial or wound healing capability. In one embodiment, the nitric oxide donor is a nanoparticle which is designed to control for the amount and duration of release of nitric oxide. The nanoparticle may further comprise the additional therapeutically active agent. The composition is useful for enhancing wound healing and for treating and preventing microbial infection. In one embodiment, the composition is directed toward reducing oral bacteria or dental plaque. The combination of one or more nitric oxide donors and one or more additional therapeutically active agent results in unexpected synergistic effects, wherein both the antimicrobial efficacy of the nitric oxide and the antimicrobial or wound healing efficacy of the second therapeutically active agent are enhanced.

Abstract: The present invention features ionomer compositions containing nanozirconia fillers. The compositions can be used in a variety of dental and orthodontic applications, for example, as adhesives, cements, restoratives, coatings and sealants.

Abstract: Various embodiments of the invention include systems and methods of generating nano-sized salt particles. These methods include generation of a supersaturated solution of a salt MX by mixing of salts MY and NX in which the solubility of MX is lower than that of MY, NX or NY. In some embodiments, nano-sized particles of MX are grown further by further adiabatic addition of salts MY and/or NX. In some embodiments, MX includes potassium nitrate. Some embodiments include compositions of MX configured for use in treatment of dentine sensitivity.

Abstract: A diamond dust polishing agent for home use and professional use in the care of natural tooth enamel and dental veneers comprised of a quantity of diamond dust coated with a lubricant in conjunction with a paste for carrying the lubricant coated diamond dust, or other semi-precious, non-toxic abrasive dust, said diamond dust being of a size of approximately 500 nanometers or less to a size of approximately 5 nanometers. The size of the dust of both the diamond and the semi-precious stone may vary, depending on the degree of abrasiveness and the lubricant employed. The diamond dust (and semi-precious dust) polishing agent permits the user to maintain the polish and luster of the natural tooth enamel and veneer at home without adversely abrading or damaging the surface thereof.

Abstract: The invention relates to biologically active nanoparticles of a carbonate-substituted non-stoichiometric hydroxyapatite, having: a) a crystallinity degree CD lower than 40%, the crystallinity degree being defined as CD=(1?X/Y)·100 wherein: Y=height of the diffraction maximum at 2?=33°, X=height of the diffraction background at 2?=33° of the nanoparticles X-ray diffraction pattern; b) a length L ranging from 20 to 200 nm and a width W ranging from 5 to 30 nm; and c) an aspect ratio AR comprised between 2 and 40, the aspect ratio being defined as AR=L/W. The biologically active nanoparticles of the invention find a preferred use in oral or dental hygiene applications and may be formulated as compositions for oral or dental hygiene such as, for example, solutions, suspensions, oils, gels or other solid products.