Abstract: The invention provides alight-curable dental material comprising a polymerizable compound having at least one ethylenically unsaturated bond and a hexaaryl bisimidazole as a photopolymerisation initiator.

Abstract: The invention provides a light-curable dental material comprising a polymerizable compound having at least one ethylenically unsaturated bond and a hexaaryl bisimidazole as a photopolymerisation initiator.

Abstract: An aluminosilicate glass composition comprising: (a) 10-35% by weight of silica; (b) 10-35% by weight of alumina; (c) 3-30% by weight of zinc oxide; (d) 4-30% by weight P205; and (e) 3-25% by weight of fluoride which contains at most 3% by weight of alkaline metals calculated as M20, wherein M is Li, Na, and/or K, and wherein the weight ratio of the sum of zinc oxide and fluoride to P205 of from 0.8 to 3.0.

Abstract: The invention provides a light-curable dental material comprising a polymerizable compound having at least one ethylenically unsaturated bond and a hexaaryl bisimidazole as a photopolymerization initiator.

Abstract: A hardening composition comprising a particulate glass, said glass comprising 10-35% by weight of silica, 10-35% by weight of alumina, 3-30% by weight of zinc oxide, 4-30% by weight of P2O5 and 3-25% by weight of fluoride, and an acidic copolymer reactive with the particulate glass under aqueous conditions.

Abstract: The invention relates to light-curable dental materials comprising at least one polymerizable compound, a photopolymerization initiator and a polymerization inhibitor.

Abstract: A hardening composition comprising a particulate glass, said glass comprising 10-35% by weight of silica, 10-35% by weight of alumina, 3-30% by weight of zinc oxide, 4-30% by weight of P2O5 and 3-25% by weight of fluoride, and an acidic copolymer reactive with the particulate glass under aqueous conditions.

Abstract: An aluminosilicate glass composition comprising: (a) 10-35% by weight of silica; (b) 10-35% by weight of alumina; (c) 3-30% by weight of zinc oxide; (d) 4-30% by weight P205; and (e) 3-25% by weight of fluoride which contains at most 3% by weight of alkaline metals calculated as M20, wherein M is Li, Na, and/or K, and wherein the weight ratio of the sum of zinc oxide and fluoride to P205 of from 0.8 to 3.0.

Abstract: One component dental adhesive composition having a pH of at most 3, comprising (a) a polymerisable acrylate monomer or prepolymer, (b) a photoinitiator, and (c) a solvent comprising t-butanol.

Abstract: A composition and method of treating a dental tooth surface and adhering a restorative material to the treated dental tooth surface is provided. A liquid composition is applied to at least the portion of the tooth to form a treated surface. The composition includes at least 50 percent by weight of a volatile organic solvent, at least 15 percent by weight of one or more polymerizable acrylate compounds and an effective amount of a photoinitiator. At least a portion of the polymerizable compounds are multifunctional polymerizable compounds having at least three acrylate moieties. The polymerizable compounds are substantially soluble in the solvent. The composition is adapted to form a polymeric material which is adapted to adhere to dentin with a bond strength of at least 12 MPa. Restorative material is then adhered to the treated surface with a bond strength of at least about 12 MPa.

Abstract: The invention provides a fluoride releasing dental primer composition which includes a polymerizable acrylic compound, a light activated catalyst, and an organic amino hydrofluoride. This fluoride releasing dental primer composition is used by applying it to dentin and illuminating it with visible light to polymerize the polymerizable acrylic compound. The invention provides a method of priming dentin by applying a fluoride releasing dental primer composition. The fluoride releasing dental primer composition has a polymerizable acrylic compound, a light activated catalyst, and an organic amino hydrofluoride having from about 2 to about 30 carbon atoms. The polymerizable acrylic compound is adapted to polymerize to form polymeric material. The organic amino hydrofluoride is adapted to leach from the polymeric material, chelate to dentin and release fluoride.

Abstract: A rotary printing press includes an inking unit with an ink fountain and an ink fountain roller. An ink fountain blade to be disposed in the ink fountain for scraping printing ink from the ink fountain roller includes a base body having a free end region to be associated with the ink fountain roller. The free end region has a plurality of slits formed therein for dividing the free end region zonally into a corresponding number of individual blades and defining zones of contact of the individual blades with the ink fountain roller. A hard-material coating is disposed on the base body in the zones of contact.

Abstract: A composition and method of treating a dental tooth surface and adhering a restorative material to the treated dental tooth surface is provided. A liquid composition is applied to at least the portion of the tooth to form a treated surface. The composition includes at least 50 percent by weight of a volatile organic solvent, at least 15 percent by weight of one or more polymerizable acrylate compounds and an effective amount of a photoinitiator. At least a portion of the polymerizable compounds are multifunctional polymerizable compounds having at least three acrylate moieties. The polymerizable compounds are substantially soluble in the solvent. The composition is adapted to form a polymeric material which is adapted to adhere to dentin with a bond strength of at least 12 Mpa. Restorative material is then adhered to the treated surface with a bond strength of at least about 12 MPa.

Abstract: Doctor blade for an offset rotary printing press having an inking unit with an ink duct wherein the ductor blade is provided for, respectively, scraping ink from an ink duct roller and zonally metering an ink film layer thereon over the width of a web of printing material includes a ceramic coating disposed on an edge portion of the blade at a region thereof at which the ink duct roller is in contact therewith.

Abstract: A method is provided for clinical retention of restorative material by a natural tooth. A first portion of photopolymerizable liquid primer/adhesive dental composition is applied to a tooth surface. After leaving the first portion of the liquid composition on the tooth surface undisturbed for at least 15 seconds on the tooth surface air is conveyed against the first portion of the liquid. The light is impinged on the first portion of the liquid composition whereby at least a portion of the first portion of the liquid composition polymerizes to form a first coating on the tooth. A second portion of the liquid composition is applied to the first coating, and air is substantially immediately conveyed to the second portion of the liquid composition.