Cement Or Filling Composition Patents (Class 523/116)
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Publication number: 20120302657Abstract: Composition which contains polymerizable binder and an initiator according to the following Formula I: R1—X—O—O—[Y—O—O—-]nR2??(Formula I) and having a large through-curing depth and a sufficiently long processing time and which cures without the development of high temperatures.Type: ApplicationFiled: November 14, 2011Publication date: November 29, 2012Applicant: IVOCLAR VIVADENT AGInventors: Norbert MOSZNER, Ulrich SALZ, Peter BURTSCHER, Robert LISKA, Astrid GUGG, Christian GORSCHE
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Publication number: 20120302662Abstract: A dental restorative composition is provided that includes a polymerizable resin, a substantially translucent structural filler, a nanofiller having a mean particle size less than 100 nm, and at least one rheology-modifying additive. In one embodiment, the structural filler has a refractive index substantially similar to that of the polymerizable resin, a coarse particle fraction, and a fine particle fraction having a mean particle size greater than 0.1 ?m and smaller than the mean particle size of the coarse particle fraction. The relative ratio of the coarse particle fraction to the fine particle fraction is in the range from about 12:1 to about 2:1 by volume, the particle size distribution of each fraction is essentially monomodal, and the D(90) of the fine particle fraction is less than or equal to the D(10) of the coarse particle fraction.Type: ApplicationFiled: May 23, 2012Publication date: November 29, 2012Applicant: KERR CORPORATIONInventor: Ulf Drechsler
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Publication number: 20120296005Abstract: A medical resin composition, particularly a dental resin composition is produced by mixing a polymer (A) containing 70% by weight or more of methyl methacrylate units and a liquid of a monomer (B) containing 70% by weight or more of a compound (b1) represented by formula (1): wherein R denotes a methyl group or a hydrogen atom and n is an integer of 2 to 4, in the presence of a polymerization initiator (C) to increase a viscosity. The resin composition can be suitably used in producing a denture base, a mouthpiece or a bone cement. A shaped article formed using such a resin composition exhibits excellent mechanical properties, particularly toughness. Furthermore, such a resin composition can be prepared with ease.Type: ApplicationFiled: January 19, 2011Publication date: November 22, 2012Applicant: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITYInventor: Jiro Tanaka
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Publication number: 20120295227Abstract: Dental compositions and disulfide monomers described. The disulfide monomer comprises a disulfide backbone group wherein each of the sulfur atoms are bonded to a group terminating with an ethylenically unsaturated norbornyl group; and at least one other monomer comprising at least two ethylenically unsaturated groups.Type: ApplicationFiled: May 18, 2011Publication date: November 22, 2012Inventors: Christopher N. Bowman, Hee Young Park, Christopher J. Kloxin, Ahmed S. Abuelyaman, Joel D. Oxman, Yizhong Wang
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Publication number: 20120295214Abstract: A method of dispensing a hardenable dental composition comprising 1) providing a two-part hardenable dental composition, and 2) extruding the composition through a static mixer in fluid communication with a first reservoir containing the first part and a second reservoir containing the second part, wherein a plunger is positioned in each reservoir for simultaneously forcing both parts into the static mixer, extruding the composition through the static mixer, and dispensing the composition, and wherein an extrusion force is applied to the plunger for extruding the composition through the static mixer without the aid of a mechanical advantage provided by an attached or external device. Also disclosed is a method of bonding a prosthetic device to a dental structure using the dispensing method, a device for dispensing the composition using the dispensing method, a kit comprising the device, and the composition used in the dispensing method.Type: ApplicationFiled: December 16, 2010Publication date: November 22, 2012Inventors: Yizhong Wang, Afshin Falsafi, Joel D. Oxman, Tiffany T. Ton
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Patent number: 8314162Abstract: The invention relates to an initiator system comprising a diarylalkylamine compound and a sensitizing agent. The invention also relates to a hardenable composition comprising the initiator system. The invention further relates to the use of the initiator system for initiating the hardening process of a hardenable composition being selected from cationically curing composition(s) and/or radically curing composition(s) or a mixture thereof. The initiator system and the hardening composition can be used in various fields, including the dental and orthodontic area.Type: GrantFiled: May 28, 2009Date of Patent: November 20, 2012Assignee: 3M Innovative Properties CompanyInventors: Bettina Hailand, Adrian S. Eckert, Karsten Dede
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Publication number: 20120289608Abstract: The invention relates to a bone cement composed of a hydrophilic component and a hydrophobic component, wherein biodegradable material is deposited in pores of the bone cement via the hydrophilic component.Type: ApplicationFiled: September 30, 2010Publication date: November 15, 2012Applicant: AAP BIOMATERIALS GMBHInventors: Christoph Sattig, Elvira Dingeldein
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Patent number: 8309632Abstract: The invention provides an epoxy nanocomposite material for dental therapy, which can be applied to direct or indirect clinical restoration, dental core-post system, and dental brace etc. The epoxy nanocomposite filling material provided by the invention can be polymerized with various curing agents to form the polymer with low shrinkage.Type: GrantFiled: February 5, 2010Date of Patent: November 13, 2012Assignee: National Taiwan UniversityInventors: Wei-Fang Su, Sheng-Hao Hsu, Yun-Yuan Tai, Min-Huey Chen
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Publication number: 20120277343Abstract: The present application provides dental fillers, and methods of making and using dental fillers that include a treated surface that includes a caseinate. Dental compositions including such dental fillers can be useful for delivering ions to the oral environment. Dental compositions, and methods of using dental compositions that include a caseinate and a hardenable resin or a water-dispersible, polymeric film former are also provided.Type: ApplicationFiled: July 11, 2012Publication date: November 1, 2012Inventors: Richard P. Rusin, Sumita B. Mitra, Kevin M. Cummings, Paul A. Burgio, Afshin Falsafi
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Publication number: 20120277882Abstract: A biocompatible implant composite particle and the method of making the same are provided. The implant composite particle includes a bone filler particle and a plurality of fibers, in which each fiber is partially embedded in the bone filler particle, and has a free portion extending from a surface of the bone filler particle. Both bone filler particle and fibers are biocompatible. The biocompatible implant composite can be used in a bone filler material for bone defects.Type: ApplicationFiled: April 27, 2012Publication date: November 1, 2012Inventors: Jo-Wei HUANG, Po-Yang Chen, Ken-Yuan Chang
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Patent number: 8297975Abstract: A reaction-curable adhesive composition exhibiting acidity is formed form a weakly acidic to alkaline composition (I) comprising (a) a polymerizable monomer and (b) a compound represented by the following formula (I) and a strongly acidic composition (II) comprising (a) a polymerizable monomer. R1—C6H4—NR2CH2COOR3??(1) wherein R1 and R2 are each independently a hydrogen atom or an alkyl group which may have a functional group, and R3 is a hydrogen atom or a metal atom. The composition containing the polymerizable monomer can be stably stored for a long period of time.Type: GrantFiled: May 14, 2008Date of Patent: October 30, 2012Assignee: Sun Medical Co., Ltd.Inventors: Takashi Yamamoto, Toshiki Ono, Masami Arata, Tatsuya Ori
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Patent number: 8292625Abstract: A radically curable polyurethane composite for dental restorations, including provisional restorations, includes polyurethane dimethacrylate prepolymers that have at least one flexible unit within a polyurethane dimethacrylate backbone, and one or more dimethacrylate monomers. Composite materials made with polyurethane dimethacrylate prepolymers of the invention exhibit superior and optimal properties of flexural strength and deflection-at-break relative to conventional dental resin composites. Composite materials of the invention also provide improved melt-resistance in response to the heat of grinding or finishing, thereby improving the fit of restorations made from the composite and preserving the finishing instruments. Methods of treating a tooth using the radically curable polyurethane composite and methods of making the polyurethane dimethacrylate prepolymers with flexible units is also provided. A kit including the radically curable polyurethane composite is also described.Type: GrantFiled: July 23, 2010Date of Patent: October 23, 2012Assignee: Pulpdent CorporationInventors: Sunny Skaria, Kenneth Berk
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Publication number: 20120258424Abstract: The abstract has been amended as follows: A method of dispensing a hardenable dental composition, which can form a temporary bond, comprising 1) providing multi-part hardenable dental composition comprising part (A) in the form of a paste comprising acid-reactive glass particles and a liquid selected from the group consisting of water, a monomer having at least one ethylenically 10 unsaturated group per monomer molecule, and a combination thereof; and part (B) comprising a water soluble polyacid and a liquid selected from the group consisting of water, a monomer having at least one ethylenically unsaturated group per monomer molecule, and a combination thereof; and 2) extruding the composition through a static mixer in fluid communication with a first reservoir containing the part (A) and a second reservoir 20 containing the part (B); wherein a plunger is positioned in each reservoir for simultaneously forcing part (A) and part (B) into the static mixer.Type: ApplicationFiled: December 16, 2010Publication date: October 11, 2012Inventors: Afshin Falsafi, Joel D. Oxman, Hoa T. Bui, Anupa N. Patel
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Publication number: 20120259034Abstract: A process for the preparation of a composition comprising hyperbranched polymeric compounds, which comprises a step of reacting a mixture comprising one or more compounds of the following formula (I): AR(B)n wherein A and B are functional groups, R is an (n+1)-valent organic group containing one or more thioether groups and n is an integer of at least 2 characterized in that A is an amino group or a hydroxyl group, and B is a carboxylic acid group or an ester or anhydride thereof, under reaction conditions wherein A reacts with B and forms a linking amide group, while A does not react with A and B does not react with B.Type: ApplicationFiled: July 6, 2010Publication date: October 11, 2012Inventors: Joachim E. Klee, Oliver Elsner, Helmet Ritter, Sven Pohle, Ella Bezdushna
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Publication number: 20120259032Abstract: The invention relates to a two-component or multicomponent system for producing a dental material, to the use of the system for producing a dental material.Type: ApplicationFiled: December 16, 2010Publication date: October 11, 2012Inventors: Stephan Neffgen, Karsten Hauser
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Patent number: 8278368Abstract: The present application provides dental fillers, and methods of making and using dental fillers that include a treated surface that includes a caseinate. Dental compositions including such dental fillers can be useful for delivering ions to the oral environment. Dental compositions, and methods of using dental compositions that include a caseinate and a hardenable resin or a water-dispersible, polymeric film former are also provided.Type: GrantFiled: November 7, 2005Date of Patent: October 2, 2012Assignee: 3M Innnovatve Properties CompanyInventors: Richard P. Rusin, Sumita B. Mitra, Kevin M. Cummings, Paul A. Burgio, Afshin Falsafi
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Patent number: 8273803Abstract: Compositions and methods of their use to adhere a variety of materials together are disclosed herein. The compositions include at least tetra calcium phosphate, an effective amount of a compound that is structurally similar to phosphoserine, and can be mixed with an aqueous solution. The compositions provide adhesive and cohesive strength in both wet and dry environments and exhibit significant bond strength upon curing.Type: GrantFiled: December 8, 2011Date of Patent: September 25, 2012Assignee: Howmedica Osteonics Corp.Inventors: Venkat R. Garigapati, Brian J. Hess, Jon Ahola
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Publication number: 20120238662Abstract: Dental cement composition comprising a polymerizable polyacidic polymer having repeating units in the polymer backbone, which are represented by the following formula (I)1 (II), and/or (III): wherein X represents O, S, or NR?, whereby R? represents a hydrogen atom or a straight or branched C1-C6 alkyl group, C3-C6 cycloalkyl group, or C4-C8 cycloalkylalkyl group, Y a group of the following formula (IV), wherein each of L1, L2, L3 and L4, which are independent from each other represents a single bond, a straight or branched C1-C6 alkylene group, a straight or branched C1-C6 alkenylene, or a straight or branched C1-C20 alkylene group which includes 1 to 8 atoms selected from oxygen and sulfur atoms, X? represents O, S, or NR?, whereby R? represents a hydrogen atom or a straight or branched C1-C6 alkyl group, C3-C6 cycloalkyl group, or C4-C8 cycloalkylalkyl group, m is 0 to 3, and n is 1 to 3.Type: ApplicationFiled: December 7, 2010Publication date: September 20, 2012Applicant: DENTSPLY DE TREY GMBHInventors: Joachim E. Klee, Helmut Ritter, Sven Pohle, Oliver Elsner, Mareike Bardts
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Patent number: 8263681Abstract: The invention features a dental composition containing a polycyclic aromatic compound, such as 2-ethyl 9,10-dimethoxy anthracene (EDMOA), in an amount that provides the composition with fluorescence mimicking that of natural teeth.Type: GrantFiled: December 21, 2007Date of Patent: September 11, 2012Assignee: 3M Innovative Properties CompanyInventors: Bradley D. Craig, Gregory A. Kobussen
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Patent number: 8262391Abstract: The invention concerns dental compositions. Said composition comprises (1) a silicone crosslinkable and/or polymerizable by cationic process; (2) an efficient amount of at least an initiator such as an organometallic complex borate; and (3) a dental filler present in the composition in a proportion of at least 10 wt. % relative to the composition total weight. Said dental compositions are useful for making dental prostheses or for dental restoration.Type: GrantFiled: March 8, 2006Date of Patent: September 11, 2012Assignee: Bluestar Silicones France SASInventor: Jean-Marc Frances
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Publication number: 20120225012Abstract: The composition for hard tissue repair of the present invention is characterized by comprising 5 to 98.95 parts by weight of a monomer (A), 1 to 75 parts by weight of a (meth)acrylate polymer (B) and 0.05 to 20 parts by weight of a polymerization initiator composition (C) containing an organoboron compound (c1), with the proviso that the total amount of the components (A), (B) and (C) is 100 parts by weight. The composition undergoes small-scale heat generation during curing and can ensure a sufficient working time.Type: ApplicationFiled: November 18, 2010Publication date: September 6, 2012Applicant: MITSUI CHEMICALS, INC.Inventors: Noriaki Asada, Shinya Aoki, Hiroshi Naruse, Shoichi Miyakoshi, Masami Arata
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Publication number: 20120219497Abstract: A polymeric material comprised of (i) at least one random copolymer comprised of ethylene oxide and one or more other alkylene oxide(s) and (ii) at least one non-random polymer comprised of one or more poly(alkylene oxide)s has been discovered. Preferably, it is a polymer alloy. Alkylene oxide homo-polymers or block copolymers may be the non-random polymer. In a related discovery, an adhesive material can be made by suspending (a) particles in (b) a matrix of at least one poly(ethylene oxide) copolymer of ethylene oxide and propylene oxide, or a combination thereof. The handling characteristics may be adjusted for different utilities (e.g., from runny oil to hard wax). Applications include use as adhesive, cohesive, filler, lubricant, surfactant, or any combination thereof. In particular, the hard materials may be used for cleaning or waxing.Type: ApplicationFiled: February 27, 2012Publication date: August 30, 2012Applicant: SYNCERA, INC.Inventors: Tadeusz WELLISZ, Timothy C. Fisher, Jonathan K. Armstrong, John Cambridge
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Publication number: 20120220691Abstract: Methods for synthesizing a methacrylate-derivatized type-I collagen in which methacrylic acid is reacted with a carboxylic acid activating reagent in the presence of a carbodiimide to form a methacrylic acid with an activated carboxylic acid group, which is then reacted with free amino groups on type-I collagen to form a collagen methacrylamide. Methacrylate-derivatized collagen, cross-linked collagens formed therefrom and products containing the cross-linked collagen are also disclosed.Type: ApplicationFiled: September 29, 2011Publication date: August 30, 2012Applicant: RUTGERS, THE STATE UNIVERSITY OF NEW JERSEYInventors: David Shreiber, Ian Gaudet
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Patent number: 8252851Abstract: The invention provides composite materials prepared by i) providing a fluid formulation comprising (1) at least one compound capable of polymerization and/or cross-linking and (2) a water-consuming reactive filler; ii) optionally injecting said formulation into a site of use; iii) polymerising and/or cross-linking said compound, to form a solid polymer matrix (which may be degradable or non-degradable); iv) causing or allowing said filler to react with water absorbed by said polymer matrix, to produce a solid filler material which is dispersed throughout the composite material. The hydration and formation of the solid filler in situ provides desirable properties to the composites, which have utility for dental composites, bone fillers and adhesives and so on. The composite may also be used to release an active ingredient e.g. an antibacterial or DNA.Type: GrantFiled: September 26, 2007Date of Patent: August 28, 2012Inventors: Anne Margaret Young, Sze Man Ho
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Publication number: 20120214900Abstract: An aqueous dental glass ionomer composition comprising (a) a reactive particulate glass, (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 groups, (c) optionally dispersed nanoparticles comprising grafted linear or branched polymer chains comprising acidic groups, and having a polymer backbone characterized in that a polymer backbone of the linear or branched polymer of component (b) and/or, if present, the grafted Sinear or branched polymer chains of component (c) are obtainable a process comprising (i) cyclopolymerizing or cyclocopolymerizing one or more compounds of the following formula (I).Type: ApplicationFiled: November 2, 2010Publication date: August 23, 2012Applicant: DENTSPLY DETREY GMBHInventors: Joachim E. Klee, Oliver Elsner, Sven Pohle, Helmut Ritter, Dominika Bernert
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Publication number: 20120213832Abstract: A dental curable composition comprises (A) a polymerizable monomer and (B) an organic amine-based polymerization initiator, wherein (A?) a long-chain polymerizable monomer having a chain length of 17 or more atoms is contained in the component (A) and/or (C) a soft resin material are/is contained in the composition, and when the amount (parts by weight) based on 100 parts by weight of the component (A) of the component (A?) is represented by [a?] and the amounts (parts by weight) based on 100 parts by weight of the total of the components (A) and (B) of the components (A), (B) and (C) are represented by (a), (b) and (c), respectively, 70?(a)?99.99, 0.01?(b)?5 30, 1?[a?]/5+(c)/1, 0?[a?]?95, and 0?(c)?250.Type: ApplicationFiled: October 22, 2010Publication date: August 23, 2012Inventors: Tatsuya Ori, Haruka Nishitani, Sayuri Iwasaki, Yuya Yamamoto, Chidzuru Nishimoto
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Patent number: 8247470Abstract: To provide a polymerizable composition having more excellent preservation stability of pastes than a conventional composition using a combination of a copper compound, cumene hydroperoxide, and N-acetylthiourea, and having a polymerization curing time which does not change with time, that is, does not delay or quicken from a time set for a product even though the composition is stored, the polymerizable composition includes a first paste and a second paste, wherein the first paste includes a polymer of ?-? unsaturated monocarboxylic acid or ?-? unsaturated dicarboxylic acid, water, and a hydroperoxide as a peroxide, and the second paste includes a (meth)acrylate compound not having an acid group, fluoroaluminosilicate glass powder, a thiourea derivative as a reducing material, and a vanadium compound as a polumerization accelerator.Type: GrantFiled: March 22, 2010Date of Patent: August 21, 2012Assignee: GC CorporationInventors: Hideki Yarimizu, Hideki Tokui, Hiroto Minamisawa
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Publication number: 20120208917Abstract: The invention relates to a dental restorative material which comprises (a) at least one antimicrobially active compound of Formula (I) [AG]m-R1—Z—SP—Y—R2—[WG]p??(I), or a filler that is surface-modified with at least one compound of Formula (I), (b) at least one radically polymerizable monomer and (c) at least one initiator for the radical polymerization. The invention also relates to a use of such dental restorative material for the preparation of an adhesive, primer, cement, coating material or filling material. The invention also relates to a dental material which comprises at least one compound of Formula (I), as well as a use of a compound of Formula (I) for modifying the surface of a substrate selected from ceramic materials, noble and non-noble metals, hard tooth structure, tooth enamel, dentine, collagen, soft tissue, mucous membrane and leather.Type: ApplicationFiled: February 8, 2012Publication date: August 16, 2012Applicant: IVOCLAR VIVADENT AGInventors: Ulrich SALZ, Thorsten BOCK, Christoph Peter FIK, Jörg TILLER, Volker RHEINBERGER
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Publication number: 20120208149Abstract: A dental composite material comprises a composite resin and an adjuvant with a concentration of more than 10% by weight of the dental composite material, wherein the adjuvant comprises more than 20% 1,6-Hexanediol Diacrylate (HDDA) by weight of the adjuvant, more than 20% Tripropylene Glycol Diacrylate (TPGDA) by weight of the adjuvant and a component selected from the group consisting of Ethyl Hexyl Acrylate (EHA), Isobornyl Acrylate (IBOA), 2 Hydroxy 3 Phenoxypropyl Acrylate (DM120) and the arbitrary compositions thereof with a concentration of more than 20% by weight of the adjuvant.Type: ApplicationFiled: April 22, 2011Publication date: August 16, 2012Applicant: National Taiwan UniversityInventors: Bor-Shiunn LEE, Fa-Jen Wang, Chi-An Dai, Chien-Liang Liu, Da-Ming Wang, Yi-Chen Kuo
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Publication number: 20120208895Abstract: This invention relates to a composite material for biomedical applications, in particular dental applications, which possesses self-healing capacity and is able to incorporate a system for the release of active ingredients at the stage of application and use.Type: ApplicationFiled: December 14, 2009Publication date: August 16, 2012Inventors: Vittoria Vittoria, Gianfranco Peluso, Loredana Tammaro, Liberata Guadagno, Marialuigia Raimondo, Orsolina Petillo, Sabrina Margarucci, Anna Calarco
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Patent number: 8242188Abstract: A dental self-etching primer composition and a dental self-etching primer kit comprising a mixture of (A) a polymerizable monomer, (B) a reducing inorganic compound containing sulfur, (C) a ketone-based solvent and (D) water and having a storage stability of 2 hours or longer at 65° C.Type: GrantFiled: October 26, 2007Date of Patent: August 14, 2012Assignee: Sun Medical Co., Ltd.Inventors: Masami Arata, Akari Yamamoto, Yoshiaki Katsura
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Patent number: 8236871Abstract: This invention relates to polymerizable compositions comprising a salt of a barbituric acid derivative. The compositions are typically shelf-life stable and may be polymerized through mixing of an acidic component with the salt of a barbituric acid derivative.Type: GrantFiled: May 31, 2007Date of Patent: August 7, 2012Assignee: 3M Innovative Properties CompanyInventors: Reinhold Hecht, Manfred Ludsteck, Gioacchino Raia, Joel D. Oxman
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Publication number: 20120196952Abstract: The present invention provides a polymerizable composition that is suitably used as a temporary cement for implant use and a mobile tooth-fixing material. The present invention is a polymerizable composition that includes an acrylic block copolymer (a) having at least one polymer block A that mainly contains a (meth)acrylic acid ester unit and that functions as a hard segment and at least one polymer block B that mainly contains an acrylic acid ester unit and that functions as a soft segment, a polymerizable monomer (b), and a polymerization initiator (c).Type: ApplicationFiled: October 19, 2010Publication date: August 2, 2012Applicant: Kuraray Medical Inc.Inventor: Kenji Suzuki
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Patent number: 8232327Abstract: Compositions and methods of their use to adhere a variety of materials together are disclosed herein. The compositions include at least tetra calcium phosphate, an effective amount of a compound that is structurally similar to phosphoserine, and can be mixed with an aqueous solution. The compositions provide adhesive and cohesive strength in both wet and dry environments and exhibit significant bond strength upon curing.Type: GrantFiled: November 12, 2009Date of Patent: July 31, 2012Assignee: Howmedia Osteonics CorpInventors: Venkat R. Garigapati, Brian J. Hess, Jon Ahola
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Publication number: 20120189987Abstract: The present invention generally relates to chemically bonded ceramic biomaterials, preferably a dental material or an implant material, comprising two binder systems. The main binder system forms a chemically bonded ceramic upon hydration thereof, and comprises powdered calcium aluminate and, optionally, minor amounts of calcium silicate. The second binder system is a cross-linking organic binder system which provides for initial crosslinking of the freshly mixed paste forming the biomaterial. The biomaterial also comprises inert filler particles.Type: ApplicationFiled: October 9, 2009Publication date: July 26, 2012Applicant: DOXA ABInventors: Leif Hermansson, Jesper Lööf, Adam Faris
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Publication number: 20120149801Abstract: 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.Type: ApplicationFiled: March 9, 2010Publication date: June 14, 2012Applicant: DENTSPLY DETREY GMBHInventors: Joachim E. Klee, Stefan Brugger, Helmut Ritter, Christoph Weber, Oliver Elsner, Mareike Bardts, Andreas Facher, Sven Pohle
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Patent number: 8198343Abstract: A dental, paste/paste self-adhesive cement includes a polymerizable acidic monomer or monomer mixtures; a polymerizable non-acidic monomer or monomer mixtures, a photo-initiator and/or a co-initiator, a reducing agent such as a benzoylthiourea and other substituted benzoylthiourea, an oxidizing agent, a thermal stabilizer and a glass filler.Type: GrantFiled: April 25, 2008Date of Patent: June 12, 2012Assignee: DENTSPLY International Inc.Inventor: Huaibing Liu
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Publication number: 20120142811Abstract: A bone cement composition contains (a) the product of a polymerisation reaction between a high molecular weight dimethacrylate monomer having a molecular weight of at least 250 and bearing at least one hydrophilic group, a monofunctional methacrylate monomer having a molecular weight of not more than 250 bearing at least one hydrophilic group, an methacrylate monomer, and a polymer having a molecular weight of at least 200,000, and (b) an inorganic filler which is present in an amount of at least about 40% by weight, based on the total weight of the cement composition.Type: ApplicationFiled: February 22, 2011Publication date: June 7, 2012Inventors: Richard Kowalski, Diane Baker
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Publication number: 20120136090Abstract: A fiber wadding for filling bone defects having a flocculent three-dimensional structure is disclosed. The fiber wadding includes a plurality of fibers that contain a biodegradable resin as a principal component and a siloxane. Outside diameter of the plurality of fibers of the wadding is from about 0.05 ?m to about 30 ?m. Bulk density of the fiber wadding is about 0.005-0.3 g/cm3.Type: ApplicationFiled: January 13, 2012Publication date: May 31, 2012Applicants: ORTHOREBIRTH CO. LTD., National University Corporation, Nagoya Institute of TechnologyInventors: Toshihiro Kasuga, Akiko Obata, Kie Fujikura, Yoshio Ota, Xianfeng Yao
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Publication number: 20120136089Abstract: Dental compositions and dental products having a resin derived from a cyclic diol such as 2,2,4,4-tetramethyl-1,3-cyclobutandiol.Type: ApplicationFiled: December 21, 2011Publication date: May 31, 2012Inventors: Bernard Koltisko, Xiaoming Jin
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Publication number: 20120129970Abstract: 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.Type: ApplicationFiled: July 14, 2011Publication date: May 24, 2012Applicant: THE CURATORS OF THE UNIVERSITY OF MISSOURIInventors: Hao Li, Qingson Yu, Liang Chen, Meng Chen
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Patent number: 8183306Abstract: The present invention provides a dental self-adhesive resin cement having clinically-acceptable adherability for various adherends without pre-treatment with primers. Specifically, there is provided the dental self-adhesive composite resin cement comprising: (a) a radical polymerizable monomer, (b) a polymerizable monomer having a phosphonic acid group and/or a phosphoric acid ester group, (c) a polymerizable monomer having a dibasic acid carboxyl group, (d) a filler, and (e) a polymerization catalyst.Type: GrantFiled: December 22, 2008Date of Patent: May 22, 2012Assignee: Kabushiki Kaisha ShofuInventors: Yoshiaki Kohro, Hisaki Tanaka, Keisuke Torii, Toshiyuki Nakatsuka, Mikito Deguchi
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Patent number: 8182860Abstract: The present invention provides dental fillers having the optical and/or mechanical characteristics required to dental materials, a method of producing the same, and a dental composite material prepared with use of the dental filler. More specifically, the present invention provides a dental filler containing a zirconium silicate compound, especially a zirconium trisilicate compound with a wadeite type crystalline structure and having an average particle diameter in the range from 2 to 50,000 nm, a method of producing the same, a dental composite material containing the dental filler and a hardenable resin selected from an acrylic resin, a methacrylic resin, an epoxy resin, a vinyl resin, a urethane resin and the like.Type: GrantFiled: March 23, 2007Date of Patent: May 22, 2012Assignee: JGC Catalysts and Chemicals Ltd.Inventors: Keisuke Ohtsuka, Yoshifumi Miyano, Hirokazu Tanaka, Eiko Tanaka, legal representative
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Publication number: 20120115109Abstract: A dental material is provided that exhibits a color change upon or after mixing or contacting components of the composition. The composition includes an acidic component in one part, and a basic component in another part that upon contact with the acidic component initiates a chemical reaction thereof that alters the pH of the composition. An acid or base sensitive color change agent is present in the composition that registers the change in pH by changing color as the pH changes.Type: ApplicationFiled: November 3, 2011Publication date: May 10, 2012Applicant: KERR CORPORATIONInventors: Xiangxu Chen, Xuejun Qian
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Publication number: 20120115981Abstract: A bone cement comprising an acrylic polymeric component and an inorganic component comprising a bioactive glass or glass-ceramic, comprising at least one metal oxide having an anti-bacterial activity, wherein said glass or glass-ceramic component is adapted to release ions of said metal in contact with physiological fluids. The bone cement performs a sustained antibacterial action, also promoting binding with the tissues with which it is contacted, and it is advantageously employed in the fixation of orthopaedic prostheses, in the production of temporary prostheses and in spinal surgery.Type: ApplicationFiled: July 12, 2010Publication date: May 10, 2012Applicants: UNIVERSITA' DEGLI STUDI DI TORINO, POLITECNICO DI TORINOInventors: Enrica Verne', Marta Miola, Sara Ferraris, Alessandro Masse, Alessandro Bistolfi, Maurizio Crova, Giovanni Maina
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Publication number: 20120115106Abstract: A self-cure, dual-cure or tri-cure polymerizable dental composition is provided with at least one functional chemical. The dental composition is divided into a three-part composition to avoid stability issues caused by degradation and/or loss of function of one component in the extended presence of another component, and the three parts are packaged in a tri-barrel syringe or cartridge delivery system to avoid premature chemical interaction between the functional chemical, redox initiator and/or acid/base.Type: ApplicationFiled: November 3, 2011Publication date: May 10, 2012Applicant: KERR CORPORATIONInventors: Xuejun Qian, David Tobia
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Publication number: 20120115978Abstract: A self-cure or dual-cure polymerizable dental composition is provided with a redox indicator. The composition exhibits an initial first color upon mixing of the two parts and then changes to a second color that is noticeably different from the first color during the curing or polymerization of the composition initiated through the redox initiator system. Advantageously, the first color may be distinctively different from tooth structure and can be easily noticed. The second color may be essentially colorless, a neutral color, or a non-visually observable color in reference to the tooth structure.Type: ApplicationFiled: November 3, 2011Publication date: May 10, 2012Applicant: KERR CORPORATIONInventors: Xuejun Qian, David Tobia
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Patent number: 8173721Abstract: A fluid cement for medical use for bone reconstruction, in particular for filling the vertebral body, and a binary composition which is intended for the preparation of such a cement. A device for conditioning the binary composition, and a method of preparing a bone cement from a binary composition. The fluid cement according to the invention comprises: a) approximately 70% to 85% by weight of a polymer comprising a polymethylmethacrylate and a methylmethacrylate monomer, and b) approximately from 15 to 30% by weight of a radio-opaque composition. Preferably, the radio-opaque composition comprises a radio-opacifier, such as a barium sulphate and zirconium dioxide, in a mixture with a calcium phosphate, for example hydroxyapatite.Type: GrantFiled: June 21, 2004Date of Patent: May 8, 2012Assignee: TeknimedInventors: Claudine Lavergne, Alain Leonard
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Patent number: 8168692Abstract: The present invention relates to novel bone substitute compositions and methods of use. It further encompasses the use of these novel bone substitute compositions for bone augmentation and the treatment of disease conditions. The invention also contemplates a kit including bone substitute compositions and a percutaneous delivery device.Type: GrantFiled: April 27, 2005Date of Patent: May 1, 2012Assignee: Kyphon SARLInventor: Robert Wenz
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Publication number: 20120101593Abstract: A solidifying implant composition of a polymer mixed with a bioabsorbable solvent. A method of treating a patient, by implanting the solidifying implant composition into bone, and solidifying the implant composition. A method of improving bone structure in patients by applying the solidifying implant composition to bone, shoring up bone structure, and improving load bearing capacity and aiding healing of microfractures. A method of fixing an implant, by applying the solidifying implant composition to an implant, and shoring up the implant. A method of devascularizing and treating a tumor or vascular lesion. A method of treating a vascular disease. A method of treating aneurysms/pseudoaneurysms.Type: ApplicationFiled: October 20, 2011Publication date: April 26, 2012Applicant: BIOS2 Medical, Inc.Inventors: Jeffrey Alan D'Agostino, Arthur Watterson