Dental Patents (Class 106/35)
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Patent number: 8057595Abstract: The present invention relates in general to implantable compositions, and method for preparing same, containing a calcium salt-containing component, optionally demineralized bone, a plurality of discrete fibers, optionally a flow additive, and optionally continuous reinforcing fibers or an array of organized fibers in the form of mesh. Advantageously, the discrete fibers have a specific aspect ratio (length/diameter) from about 50:1 to about 1000:1. The addition of a small amount of discrete fibers and/or the continuous reinforcing fibers or fiber mesh can cause drastic increases in certain mechanical properties including flexural strength, flexural toughness, and/or screw pullout strength.Type: GrantFiled: November 3, 2009Date of Patent: November 15, 2011Assignee: Synthes USA, LLCInventors: Bryan Monro Armitage, Ira Ison, Mark Fulmer, Sean Kerr, Michael Lehmicke, Patrick Leamy, William Schiffer
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Patent number: 8053487Abstract: This invention describes an adhesive used for bonding dental and medical biomaterials to hard tissues via a molecular bridge formed from calcium-reactive amines and acrylic or methacrylic ester monomers to hard tissues such as enamel, dentin, and bone. This formulation consists of an acid-stable polymerizable compound with multi-functional acrylate cross-linkers. This formula provides good self-adherence without prior preparation of the hard tissue substrates. The formulation can contain chemical- and/or light-activated free-radical initiators.Type: GrantFiled: January 30, 2009Date of Patent: November 8, 2011Assignee: The United States of America as represented by the Secretary of the NavyInventors: James C. Ragain, Jr., Amer Tiba, David G. Charlton
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Patent number: 8029286Abstract: The present invention is directed to dental compositions that can be used as adhesives for bonding a dental material to a dental structure surface and/or as a dental restorative material. The dental composition is preferably applied to a dental structure surface under conditions effective to etch the dental structure surface.Type: GrantFiled: September 19, 2008Date of Patent: October 4, 2011Assignee: 3M Innovative Properties CompanyInventors: Bradley D. Craig, Steven M. Aasen, Ahmed S. Abuelyaman, David K. Cinader, Afshin Falsafi, Reinhold Hecht, Thomas Luchterhandt, Sumita B. Mitra, Prabhakara S. Rao, Brian A. Shukla, Markus Watermann
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Patent number: 8029613Abstract: Disclosed is a one-pack type dental adhesive composition comprising: (a) 1.0 to 40.0 parts by weight of a silane coupling agent, (b) 0.01 to 0.4 part by weight of a weak acidic compound which is at least one of organic acid, boric acid and silicic acid, and has an acid dissociation exponent pKa of 3 or more in the form of an aqueous solution, (c) 0.01 to 0.4 part by weight of a strong acidic compound which is at least one of HF, HCl, HBr, HI, HNO3, HClO3, HClO4, HBrO4, HMnO4, H2SO4 and H3PO4 and has an acid dissociation exponent pKa of less than 3, (d) 0.1 to 5.0 part by weight of water, and (e) 20.0 to 99.0 parts by weight of a volatile organic solvent.Type: GrantFiled: September 30, 2009Date of Patent: October 4, 2011Assignee: Kabushiki Kaisha ShofuInventors: Hisaki Tanaka, Toshihide Fujii, Yutaka Yamaguchi, Mikito Deguchi
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Patent number: 8026297Abstract: The present application relates to a polymerizable dental primer/adhesive system comprising a primer component having a relatively hydrophilic monomer component in an amount that renders the system relatively hydrophilic before polymerization of the system and capable of penetrating a prepared dental surface such as etched tooth dentin or enamel, and a multi-functional cross-linking agent in an amount that renders the system relatively hydrophobic after polymerization. A polymerizable hydrophobic monomer component is also included in the primer. The inclusion of said hydrophobic polymerizable monomer and said multi-functional cross-linking agent improves the long term stability or durability of the polymerized primer system to the dental restoration and to the tooth, dentin, enamel and other dental surfaces. An additional hydrophobic resin can also be employed with the primer adhesive system.Type: GrantFiled: January 29, 2008Date of Patent: September 27, 2011Assignee: Bisco, Inc.Inventors: Byoung Suh, Rui Yin, Michelle Schiltz-Taing, Adriana Pigozzo Manso
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Publication number: 20110226158Abstract: A solution is provided for preparing teeth for bonding. The solution includes a liquid solution containing phosphoric acid and a pumice. The phosphoric acid may be in non-gel form. A method of preparing teeth for the adhesion of a component is also provided, and includes applying to at least one tooth a solution of liquid phosphoric acid and an abrasive such as pumice, removing the solution, and applying an adhesive for placing a component on the teeth.Type: ApplicationFiled: June 1, 2011Publication date: September 22, 2011Inventor: Frank R. Besson
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Publication number: 20110229421Abstract: Calcium phosphate particles are described comprising a surface treatment wherein the surface treatment comprises at least one sugar alcohol, at least one glycerophosphoric acid compound, or mixture thereof. Also described are various oral care compositions comprising surface treated calcium phosphate particles and methods of surface treating calcium phosphate particles.Type: ApplicationFiled: November 11, 2009Publication date: September 22, 2011Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Richard P. Rusin, Neeraj Sharma, Sumita B. Mitra
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Patent number: 8002885Abstract: 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.Type: GrantFiled: August 31, 2010Date of Patent: August 23, 2011Assignee: Pentron Ceramics, Inc.Inventors: Dmitri Brodkin, Moisey Y. Gamarnik
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Patent number: 7998219Abstract: A ceramic powder of non-agglomerated non-aggregated phase-pure hydroxyapatite having a controllable morphology. Also presented is a film of phasepure crystalline hydroxyapatite grains having a controllable morphology. Methods for preparing the same are also provided.Type: GrantFiled: December 21, 2005Date of Patent: August 16, 2011Assignee: Rutgers, The State University of New JerseyInventors: Richard E. Riman, Alexander Burukhin, Eugene Zlotnikov, Dan Haders
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Patent number: 7998264Abstract: A hardenable dental material, exhibiting a reflectivity in the hardened state of preferably more than about 70%, measured according to EN ISO 2813 (1999) with an angle of incidence of 60°. The material provides for improved visual readability in the hardened state.Type: GrantFiled: May 2, 2006Date of Patent: August 16, 2011Assignee: Coltene Whaledent AGInventors: Dierk Lubbers, Ralf Kollefrath, Manfred Kalt
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Patent number: 7993137Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.Type: GrantFiled: November 11, 2010Date of Patent: August 9, 2011Assignee: Ivoclar Vivadent AGInventors: Elke Apel, Wolfram Holland, Marcel Schweiger, Christian Ritzberger, Harald Burke, Volker Rheinberger
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Publication number: 20110171591Abstract: The invention provides an orthodontic composition, related methods and packaged articles that include a hardenable component, a hardener, and a heat-modified inorganic mineral filler. The composition displays improved hardened remnant cleanup compared with compositions using traditional hard mineral fillers, while maintaining acceptable handling, bond strength and mechanical properties. Bond strength enhancement is achieved by heat-modifying a soft mineral filler, a process by which water of hydration is eliminated from the microstructure of the mineral to form a non-hydrated phase. By using heat-modified mineral fillers that are soft relative to human enamel, the hardened orthodontic composition can be conveniently removed using a lowspeed abrasive disk or other mild abrasion process that is safer and more comfortable for the patient. The composition is especially beneficial for use in bonding orthodontic appliances to teeth.Type: ApplicationFiled: September 8, 2009Publication date: July 14, 2011Inventors: David T. Amos, Geoffrey P. Morris
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Patent number: 7977404Abstract: 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.Type: GrantFiled: April 19, 2006Date of Patent: July 12, 2011Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Herbert Wolter, Carsten Gellermann, Werner Storch
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Patent number: 7977406Abstract: The present invention discloses an endodontic sealer which comprises a urethane-monoacrylate oligomer, a diluting monomer, at least one photo-initiator, at least one thermal-initiator, and a filler, wherein the urethane-monoacrylate oligomer is obtained by firstly reacting the acrylate with the diisocyanate to form an intermediate with only one isocyanate group, and then reacting the intermediate with the polyol to form the desired urethane-monoacrylate oligomer.Type: GrantFiled: December 19, 2008Date of Patent: July 12, 2011Assignee: National Taiwan UniversityInventors: Kuo-Huang Hsieh, Chun-Pin Lin, Ken-Hsuan Liao, Chung-Yi Lee
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Patent number: 7972137Abstract: Compositions and methods are directed to antimicrobial compositions and articles that release ?NO from the composition and/or article in an amount effective to prevent gingival and other oral mucosal diseases.Type: GrantFiled: June 25, 2004Date of Patent: July 5, 2011Inventor: Gerald M. Rosen
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Patent number: 7947759Abstract: Disclosed are cement products, methods of forming cement using the cement product, and methods of using the cement product in orthopedic and dental applications. Generally, the disclosed cement product includes a first component comprising a polymerizable resin comprising ethylenic unsaturated double bond, a second component comprising a compound comprising more than one type of amine selected from the group consisting of primary amines, secondary amines, tertiary amines and quaternary amines, and, optionally, the cement product includes a bioactive component to promote bone formation.Type: GrantFiled: August 8, 2006Date of Patent: May 24, 2011Assignee: Angstrom MedicaInventors: Juchui Ray Lin, Edward S. Ahn, Hansen Yuan, Paul J. Mraz
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Patent number: 7942961Abstract: The present invention is a bioactive endodontic material and its use for filling the tooth and bone cavities. The present invention, by using calcium salt, calcium oxide, calcium silicate, and calcium phosphate compounds as essential constituents, and mixing them with a water base solution, prepares a bioactive calcium and phosphate enriched material. The enriched material (cement) comprises high concentration of water-soluble calcium and phosphate, and immediately forms hydroxyapatite during and after setting. The cement is biocompatible, antibacterial, capable to form an effective seal against reentrance of microorganisms into the filled cavity, compatible to handle and set in an aqueous environment, and able to stimulate hard tissue healing.Type: GrantFiled: July 16, 2007Date of Patent: May 17, 2011Inventor: Saeed Asgary
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Patent number: 7943068Abstract: Blocks of material are prepared in a variety of shapes and sizes to be used in the fabrication of models for dental restorations. The material comprises a partially sintered ceramic material. The blocks are used to manufacture molds using CAD/CAM methods and equipment. The molds are useful in the manufacture of dental restorations using ceramics, metals, alloys, or powders thereof, and composite materials. The models milled from the blanks may be used to manufacture a variety of dental restorations including, but not limited to, crowns, bridges, space maintainers, tooth replacement appliances, orthodontic retainers, dentures, posts, jackets, inlays, onlays, facings, veneers, facets, implants, abutments, splints, partial crowns, teeth, cylinders, pins, and connectors.Type: GrantFiled: November 13, 2006Date of Patent: May 17, 2011Assignee: Ivoclar Vivadent, Inc.Inventor: Carlino Panzera
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Publication number: 20110094415Abstract: A denture adhesive article, comprising a denture adhesive component and a viscosity index improver, wherein the denture adhesive article is preformed.Type: ApplicationFiled: November 4, 2010Publication date: April 28, 2011Inventors: Jayanth Rajaiah, Franco Silva Medeiros, Luisa Navarro Cerda, Robert Scott Leonard, Steven Daryl Smith, Mark William Hamersky, Rafael Edmundo Bras
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Patent number: 7932303Abstract: A material contains at least a polymerizable N,O-functionalized acrylic acid hydroxyamide of the Formula (I) in which A is an n+m-valent linear or branched aliphatic C1 to C50 radical, in which the carbon chain can be interrupted by O, S, —CO—O—, CO—NH, O—CO—NH or NH—CO—NH, an n+m-valent aromatic C6 to C18 radical or an n+m-valent cycloaliphatic or heterocyclic C3 to C18 radical, wherein the radicals can carry one or more substituents, Y is not present, or is O, S, an ester, amide or urethane group, R1 is hydrogen, an aliphatic C1 to C20 alkyl or C3 to C8 cycloalkyl radical which can carry one or more substituents, R2 is H or a C1 to C10 alkyl radical, R3 is not present or is a C1 to C16 alkylene radical which can be interrupted by O, HG is not present, is —COOH, —P?O(OH)2; —P?O(OH)(OR4); —O—P?O(OH)2, —SO2OH or —O—P?O(OH)(OR4), R4 is a C1 to C15 alkyl radical, phenyl or benzyl radical and n is a number from 1 to 5 and m a number from 0 to 3.Type: GrantFiled: September 11, 2007Date of Patent: April 26, 2011Assignee: Ivoclar Vivadent AGInventors: Norbert Moszner, Iris Lamparth, Urs Karl Fischer, Frank Zeuner, Armin de Meijere, Volker M. Rheinberger
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Patent number: 7923485Abstract: The invention relates to preparations based on aziridino polymers and comprising monofunctional aziridines and to the use thereof in producing dental materials, especially impression materials.Type: GrantFiled: August 4, 2003Date of Patent: April 12, 2011Assignee: 3M ESPE AGInventors: Thomas Klettke, Cornelia Führer, Adrian Eckert, Gunther Eckhardt, Erich Wanek
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Patent number: 7918929Abstract: A non-toxic water erodible denture adhesive incorporating a starch portion and a polysaccharide portion whereby a elastomeric paste of excellent bioadhesiveness and adhesion to smooth surfaces is obtained; and which is found to have excellent thin film forming properties and is water erodible facilitating easy removal from denture recesses as well as the intraoral cavity.Type: GrantFiled: February 19, 2008Date of Patent: April 5, 2011Inventor: John Christopher Sunnucks
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Publication number: 20110073006Abstract: Rapid setting high strength calcium phosphate cements and methods of using the same are provided. Aspects of the cements include fine and coarse calcium phosphate particulate reactants and a cyclodextrin which, upon combination with a setting fluid, produce a flowable composition that rapidly sets into a high strength product. The flowable compositions find use in a variety of different applications, including the repair of hard tissue defects, e.g., bone defects such as fractures.Type: ApplicationFiled: September 28, 2009Publication date: March 31, 2011Inventors: Sahil Jalota, David C. Delaney, Duran N. Yetkinler
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Publication number: 20110041727Abstract: The present invention relates to a self-neutralising type of calcium hydroxide (Ca(OH)2) preparation for use in dentistry. More specifically, it relates to a self-neutralising type of calcium hydroxide preparation which is formulated in such a way that it can be used in dentistry by being mixed, in a cement clinker, with an active siliceous substance, bismuth oxide (Bi2O5), silica, sulphur trioxide and aluminium oxide/ferric oxide and the like. One aspect of the present invention provides a self-neutralising type of calcium hydroxide preparation comprising an active siliceous substance and bismuth oxide, and this self-neutralising type of calcium hydroxide preparation is characterised in that it comprises silica, sulphur trioxide and aluminium oxide/ferric oxide.Type: ApplicationFiled: April 24, 2009Publication date: February 24, 2011Inventor: Sung Wook Jang
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Patent number: 7892347Abstract: The invention is related to a premixed putty calcium phosphate composition comprising at least two calcium phosphate minerals, at least one reaction retarding agent, at least one binding agent, at least one sodium phosphate, and at least one nonaqueous extender, wherein one of said at least two calcium phosphate minerals contains a stabilizing agent.Type: GrantFiled: December 17, 2009Date of Patent: February 22, 2011Assignee: Howmedica Osteonics Corp.Inventors: Gerard M. Insley, Adrian Sun Wai, Donal O'Mahony, Paul Higham, Joseph P. Zitelli, Sandra M. Murray, Brian Hess
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Patent number: 7892342Abstract: A white, substantially non-iron containing dental material formed from Portland cement. The material may be a dental cement, dental restorative or the like.Type: GrantFiled: August 27, 2009Date of Patent: February 22, 2011Assignee: DENTSPLY International, Inc.Inventor: Carolyn M. Primus
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Patent number: 7893129Abstract: Stable, highly filled cationic dental compositions useful for the production of dental prostheses and dental restoration materials contain: (1) at least one compound which is reactive cationically when activated, advantageously at least one UV- and cationically reactive oxirane-functionalized silicone; (2) at least one dental filler, advantageously SiO2; (3) at least one organic polymer or copolymer dispersant having an amine index less than or equal to 100 mg of potassium hydroxide per gram of dispersant, advantageously a polyurethane/acrylate copolymer or alkylammonium salt thereof; (4) at least one cationic photoinitiator, advantageously iodonium borate; and (5) optionally, at least one photosensitizer.Type: GrantFiled: March 9, 2009Date of Patent: February 22, 2011Assignee: Bluestar Silicones France SASInventor: Jean-Marc Frances
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Patent number: 7893130Abstract: Dental compositions are described which are photocurable by radiation with a wavelength greater than 390 nm. The compositions include a cationically active compound, a dental filler, optionally a dispersant, a cationic photoinitiator and a photosensitizer which is a thioxanthone salt substituted by at least one group containing an ammonium function. The composition has the advantage of remedying the color stability problems of finished dental products after crosslinking.Type: GrantFiled: May 10, 2005Date of Patent: February 22, 2011Assignee: Bluestar Silicones France SASInventor: Jean-Marc Frances
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Patent number: 7892995Abstract: The present invention relates to preparing an improved lithium silicate glass ceramic for the manufacture of blocks for dental appliance fabrication using a CAD/CAM process. The lithium silicate material has a chemical composition that is different from those reported in the prior art including 8 to 10% of germanium dioxide in the final composition. The softening points are close to the crystallization final temperature of 830° C. indicating that the samples will support the temperature process without shape deformation. The resulting material has improved castability and higher density.Type: GrantFiled: September 12, 2008Date of Patent: February 22, 2011Inventor: Rodolfo Castillo
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Patent number: 7892346Abstract: The invention is related to a premixed putty calcium phosphate composition comprising at least two calcium phosphate minerals, at least one reaction retarding agent, at least one binding agent, at least one sodium phosphate, and at least one nonaqueous extender, wherein one of said at least two calcium phosphate minerals contains a stabilizing agent.Type: GrantFiled: October 28, 2008Date of Patent: February 22, 2011Assignee: Howmedica Osteonics Corp.Inventors: Gerard M. Insley, Adrian Sun Wai, Donal O'Mahony, Paul Higham
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Patent number: 7879924Abstract: The present invention provides a dental resin cement which is excellent in a mechanical strength, workability and storage stability, and a dental primer which significantly improves adhesiveness of the dental resin cement both to enamel and dentin of a tooth. According to the present invention, a salt of barbituric acid is used as a polymerization initiator in the dual-cure two-paste type dental resin cement being excellent in workability and storage stability to improve the storage stability, and a primer containing barbituric acid and amine is applied to a surface of a tooth to significantly improve adhesiveness of the dental resin cement both to enamel and dentin of teeth.Type: GrantFiled: February 3, 2006Date of Patent: February 1, 2011Assignee: Kabushiki Kaisha ShofuInventors: Keisuke Torii, Hisaki Tanaka, Toshihide Fujii, Yoshiaki Kohro, Mikito Deguti
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Patent number: 7871948Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.Type: GrantFiled: October 17, 2008Date of Patent: January 18, 2011Assignee: Ivoclar Vivadent AGInventors: Elke Apel, Wolfram Holand, Marcel Schweiger, Christian Ritzberger, Harald Burke, Volker M. Rheinberger
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Patent number: 7867329Abstract: A dental cement system, including an aqueous hydration liquid and a powdered material that essentially consists of an inorganic cement system, which powdered material has the capacity to form a complex, chemically bonded material with inorganic as well as organic phases with properties suitable for cementation of implant to another implant and/or to tooth or bone tissue.Type: GrantFiled: August 23, 2007Date of Patent: January 11, 2011Assignee: DOXA ABInventors: Leif Hermansson, Jesper Lööf, Håkan Engqvist
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Patent number: 7867930Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.Type: GrantFiled: October 17, 2008Date of Patent: January 11, 2011Assignee: Ivoclar Vivadent AGInventors: Elke Apel, Wolfram Holand, Marcel Schweiger, Christian Ritzberger, Harald Burke, Volker M. Rheinberger
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Patent number: 7867931Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.Type: GrantFiled: October 17, 2008Date of Patent: January 11, 2011Assignee: Ivoclar Vivadent AGInventors: Elke Apel, Wolfram Holand, Marcel Schweiger, Christian Ritzberger, Harald Burke, Volker M. Rheinberger
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Publication number: 20100330522Abstract: The invention relates to orthodontic or dental appliances with a substrate, at least certain regions of which are provided with a coating containing titanium dioxide and/or titanium nitride, as well as a coating formulation and a method of applying the coating formulation to the orthodontic or dental appliances.Type: ApplicationFiled: January 30, 2009Publication date: December 30, 2010Applicant: PBD, Patent & Business Development AGInventor: Markus Johannes Hirsch
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Patent number: 7855242Abstract: A curable restorative composition is disclosed, comprising a polymerizable mono(meth)acrylate resin having a vapor pressure of 1 mm Hg or less at 20° C., a plasticizer; and a curing system for the mono(meth)acrylate resin. The composition is particularly useful for making temporary restorations. Methods of used and kits comprising the composition are also disclosed.Type: GrantFiled: September 1, 2006Date of Patent: December 21, 2010Assignee: Pentron Clinical Technologies LLCInventors: Weitao Jia, Shuhua Jin
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Patent number: 7851515Abstract: Dental composition containing (i) at least one acid (meth)acrylamide monomer which has two or more polymerizable groups, (ii) at least one acid monomer which has only one polymerizable group and (iii) at least one polymerization initiator.Type: GrantFiled: August 25, 2005Date of Patent: December 14, 2010Assignee: Ivoclar Vivadent AGInventors: Ulrich Salz, Angela Mucke, Jorg Zimmermann, Norbert Moszner, Frank Zeuner, Volker Rheinberger
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Publication number: 20100307378Abstract: The present invention relates, generally, to monomers containing carbamate-methacrylates or derivatives of carbamate-methacrylates, processes for making the monomers, and compositions comprising the monomers. The present invention also relates to methods of using the monomers, such as in dental applications, and in particular, dental restorative resins.Type: ApplicationFiled: April 8, 2010Publication date: December 9, 2010Applicant: SEPTODONT CONFI-DENTAL DIVISIONInventors: Marianela Trujillo-Lemon, Kristin Lindsay Wall, Kristina Esquibel, Jordan Boulden, Amy J. Docktor, Zachary R. Shelton, Cora Bracho-Troconis
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Patent number: 7846857Abstract: The invention relates to dental glass-ceramics and a process for producing them and their use, with these comprising at least one crystal phase containing xenotime or monazite or mixtures thereof.Type: GrantFiled: May 31, 2006Date of Patent: December 7, 2010Assignee: Ivoclar Vivadent AGInventors: Wolfram Höland, Christian Ritzberger, Volker Rheinberger, Elke Apel
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Patent number: 7846858Abstract: The invention concerns a glaze for annealing surfaces, particularly of ceramic parts used in the field of medicine, comprising the components 30 to 55% SiO2, 0 to 7% Al2O3, 10 to 30% R2O, 5 to 10% R?O, 0.5 to 15% B2O3, 5 to 10% Bi2O3, 1 to 10% P2O5, 0 to 5% Sb2O3, 0 to 5% SnO2, 0 to 5% TiO2 and 5 to 10% ZrO2 by mass, wherein (R) is one or several alkali metals and (R?) is one or several bivalent metals from the group comprising alkaline earth metals and zinc, and wherein the glaze is obtained by melting or sintering the components.Type: GrantFiled: September 11, 2008Date of Patent: December 7, 2010Assignee: Denseo GmbHInventor: Ismail Yilmaz
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Patent number: 7838573Abstract: Improved compositions comprising a mixture of gutta-percha and a hydraulic material containing calcium silicate, calcium aluminate, calcium phosphate, and calcium sulfate compounds are provided. Preferably, the composition includes hydroxylapatite mineral. The composition is particularly suitable for obturating and sealing dental root canals. The composition should provide a stable barrier to bacterial and fluid leakage in the root canal system of a tooth. In addition, the composition should help promote the growth of new bone and tissue surrounding the root tip area.Type: GrantFiled: June 27, 2007Date of Patent: November 23, 2010Assignee: DENTSPLY International, Inc.Inventors: Carolyn M. Primus, James L. Gutmann
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Patent number: 7834066Abstract: The present invention relates to a denture adhesive article comprising: a) a safe and effective adhesive amount of a water soluble denture adhesive component; b) a safe and effective amount of a component selected from the group consisting of a water soluble plasticizer, a water soluble carrier, and mixtures thereof; wherein the article is bioerodible; and wherein the article has dry tack.Type: GrantFiled: October 31, 2006Date of Patent: November 16, 2010Assignee: The Procter & Gamble CompanyInventors: Jayanth Rajaiah, Elizabeth Anne Wilder, Mark William Hamersky, Steven Daryl Smith, Douglas Craig Scott
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Patent number: 7819963Abstract: To provide a dental alginate impression material composition capable of solving a problem that the permeation rate of water with respect to the whole powder of an alginate impression material is slow at the time of use so that a kneading time is long and a sufficient operational time cannot be secured, and a problem that a kneaded material drops into a throat due to aging of the material at the time of taking an impression, the dental alginate impression material composition comprises 0.001 to 1% by weight of one or more kinds selected from oils mainly consisting of a fatty acid and an ester of alcohol, waxes mainly consisting of a fatty acid and an ester of glycerin, and a fatty acid ester; 0.01 to 10% by weight of a surfactant; and 0.01 to 10% by weight of one or more kinds of specific polysaccharides.Type: GrantFiled: August 29, 2007Date of Patent: October 26, 2010Assignee: GC CorporationInventors: Hiroshi Kamohara, Hiroki Morita
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Patent number: 7819663Abstract: A preparation contains an aqueous liquid part, a solid part comprising at least one silicate selected from tricalcium silicate Ca2SiO5 and dicalcium silicate Ca2SiO4; and calcium chloride CaCl2 and a water reducing agent which are both contained in at least one of the aforementioned parts. According to the invention, the solid part and the liquid part are intended to be mixed in order to obtain the material. The preparation can be used to restore a mineralized substance, particularly in the dental field.Type: GrantFiled: August 13, 2003Date of Patent: October 26, 2010Assignee: Septodont Ou Specialties Sertodont S.A.Inventors: Badreddine Bergaya, Jean-Yves Bottero, Marie-Josee Bottero, Jean-Claude Franquin, Dominique LeBlanc, Olivier Marie, Andre Nonat, Cyrille Sauvaget
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Publication number: 20100266990Abstract: An antimicrobial formulation for dental applications includes colloidal silver, from between about 0.01 to 2 percent by weight and colloidal copper, from between about 0.05 to about 10 percent by weight. The antimicrobial formulations are used to treat microorganisms on a tooth to prevent tooth decay by administering an effective amount of the antimicrobial formulation alone or in combination with a dental varnish, stannous fluoride, or sodium fluoride. The antimicrobial formulation may be part of a kit or used in a biocompatible time release chip.Type: ApplicationFiled: December 22, 2006Publication date: October 21, 2010Inventors: Marianna Cooley, Mikki Lease Fraser
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Patent number: 7815434Abstract: The invention provides a dental coating kit with high adhesiveness to teeth that contains a primer composition including an acidic group-containing polymeric monomer (a), water (b) and a water-soluble solvent (c) and a surface smoothing composition including a polyfunctional polymeric monomer (f), a volatile solvent (g) and a photopolymerization initiator (h); and a dental coating kit with high adhesiveness to teeth and minimally suffering from chipping and peeling off that contains a primer composition including an acidic group-containing polymeric monomer (a), water (b) and a water-soluble solvent (c), a coating composition including a polymeric monomer (d) and a photopolymerization initiator (e), and a surface smoothing composition including a polyfunctional polymeric monomer (f), a volatile solvent (g) and a photopolymerization initiator (h). Either dental coating kit is particularly useful as a kit for preventing stain and color return of a bleached tooth.Type: GrantFiled: October 6, 2003Date of Patent: October 19, 2010Assignee: Kuraray Medical Inc.Inventors: Mitsuru Takei, Junichi Ohtsuki
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Patent number: 7816291Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.Type: GrantFiled: July 27, 2009Date of Patent: October 19, 2010Assignee: Ivoclar Vivadent AGInventors: Marcel Schweiger, Volker M. Rheinberger, Harald Burke, Wolfram Holand
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Publication number: 20100261136Abstract: The invention relates to a dental composition comprising a hardenable powder to be used in a process for retraction of dental tissue. The invention also relates to a kit of parts comprising the dental composition comprising a hardenable powder, a hardening agent, optionally a handpiece of a powder jet device, optionally a powder jet device, and optionally retraction caps. In a further aspect, the invention relates to a method for retracting dental tissue comprising the steps of applying a dental composition comprising a hardenable powder with a powder jet device into the sulcus between soft and hard dental tissue, applying a composition comprising a hardening agent either before or after the previous step, leaving the dental composition in the sulcus for a time sufficient to effect retraction of the soft dental tissue and removing the dental composition from the sulcus.Type: ApplicationFiled: December 9, 2008Publication date: October 14, 2010Inventors: Christoph Schulte, Andreas R. Maurer, Thomas Klettke, Ruediger Hampe, Ingo R. Haeberlein
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Patent number: RE42024Abstract: Dental compositions containing adjuvants are provided that have the capability of undergoing an increase in viscosity in response to an increase in temperature. In a preferred embodiment, the compositions also have the ability to reverse their viscosity in response to a decrease in temperature.Type: GrantFiled: December 29, 2005Date of Patent: January 11, 2011Assignee: 3M Innovative Properties CompanyInventors: Matthew C. Trom, Joel D. Oxman