Radio- Or X-ray Opaque Patents (Class 523/117)
  • Patent number: 10792228
    Abstract: The invention relates to a kit of parts for preparing a glass ionomer composition for dental use, the kit of parts comprising a Powder Part P and a Liquid Part L, Powder Part P comprising: acid-reactive inorganic filler, Liquid Part L comprising: water, complexing agent, polyacid, either the Powder Part P or the Liquid Part L or the Powder Part P and the Liquid Part L comprising non-aggregated nano-sized particles based on silica or alumina, the composition obtained by combining the components of Powder Part P and Liquid Part L before hardening comprising the components in the following amounts: non-aggregated nano-sized particles: from 0.1 to 15 wt.-%, acid-reactive filler in an amount from 50 to 75 wt.-%, polyacid: 7 to 20 wt.-%, complexing agent: 0.5 to 3 wt.-%, water: 5 to 18 wt.-%, wt.-% with respect to the weight of the whole composition.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: October 6, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Michael Jahns, Markus Mikulla, Robert F. Peez, Adrian S. Eckert, Rainer A. Guggenberger, Simone Raynoschek, Afshin Falsafi, Bradley D. Craig, Jimmie R. Baran, Jr., Joel D. Oxman
  • Patent number: 10287710
    Abstract: A radio opaque fiber, filament, and yarn is disclosed herein. The radio opaque fiber, filament, or yarn comprises a matrix (102) comprising a plurality of radio opaque material (104) and a first polymer (106), where the radio opaque material (104) is at least one of a radio opaque element, an alloy of the radio opaque element, and a compound of the radio opaque element, or a combination thereof, wherein the radio opaque element if of an atomic number greater than or equal to 29, and wherein the matrix (102) forms a unified flexible structure. The radio opaque fiber, filament, or yarn further comprises a carrier polymer (108) which binds the plurality of the matrix (102) and imparts spinnability to form the fiber, filament, and yarn.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: May 14, 2019
    Assignee: CARENOW MEDICAL PRIVATE LIMITED
    Inventors: Michael Bastiao Rodrigues, Vivekananda Siddamalaigounder Krishnaswamy, Vasanth Kumar Sundaravadivelu, Anand Venkatachalam
  • Patent number: 10272174
    Abstract: A bone cement comprising an acrylic polymer mixture which is formulated to have a relatively high viscosity for a relatively long window, due to distributions of molecular weights and/or sizes of acrylic beads.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: April 30, 2019
    Assignee: DePuy Synthes Products, Inc.
    Inventors: Mordechay Beyar, Oren Globerman
  • Patent number: 10149919
    Abstract: The invention relates to a hardenable multi-part liquid acrylic composition. The composition comprises a storage stable liquid first part, a storage stable liquid second part and optionally, a third or further liquid parts. The parts are operable to form a cement which hardens to a solid upon mixing of the parts together. The composition comprises an acrylic monomer component, an initiator component, acrylic polymer particles and a radiopacifying filler. The initiator component is present in an amount of effective to polymerize the acrylic monomer component upon being mixed and/or activated therewith. At least some of the radiopacifying filler is encapsulated within and/or adsorbed on the acrylic polymer particles in a liquid part.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: December 11, 2018
    Assignee: LUCITE INTERNATIONAL SPECIALTY POLYMERS & RESINS LIMITED
    Inventors: Michael Stephen Chisholm, Sera Saheb Abed-Ali
  • Patent number: 10124124
    Abstract: A method for assisting subchondral injection comprising creating a model of bone and soft tissue of a patient. At least one void is modeled in the bone from the model of bone and soft tissue. An injection site is identified from the model of bone and soft tissue and modeling of the at least one void. Data is output for guiding at least in the locating of the injection site and drilling of the bone to reach the void. A patient-specific jig for subchondral injection may be created based on the injection site location.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: November 13, 2018
    Assignee: ZIMMER, INC.
    Inventors: Pierre Couture, Louis-Philippe Amiot, Laurence Mercier
  • Patent number: 10105116
    Abstract: A fracture mobility testing system is provided for use in surgical procedures for augmenting vertebral bodies having collapsed due to compression fractures. The testing system is utilized to determine if the cortical shell of the vertebral body has begun to heal over the fracture lines to the point at which height restoration is not possible. Depending on the feedback provided by the testing system, the surgeon may elect to proceed with any of a variety of known height restoration techniques if the fractured portions of the vertebral body are still mobile, or may elect for a simple vertebroplasty procedure without height restoration if the feedback from the testing system determines that the cortical outer portions of the fractured vertebral body have fused to one another to the point at which height restoration is no longer an option.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: October 23, 2018
    Assignee: DePuy Synthes Products, Inc.
    Inventors: Gregor Feigenwinter, Jacques Teisen
  • Patent number: 9028254
    Abstract: Disclosed herein are acrylic and methacrylic acid ester-based polymeric materials containing as flexibilizing and brittleness reducing agents 1-60% of C4-C8 polyalkylene or polyalkyldiene compounds, preferably having a molecular weight of 300-2100, and the use of such materials in dentistry and medicine.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: May 12, 2015
    Assignee: Scientific Pharmaceuticals, Inc.
    Inventors: Jan A Orlowski, David V Butler, Alice Chin
  • Patent number: 9023917
    Abstract: A carrier composition for filling a tooth root canal, comprising a cross-linkable material.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: May 5, 2015
    Assignee: DENTSPLY International Inc.
    Inventor: Todd Berger
  • Patent number: 8993652
    Abstract: A dual-cure curable material kit comprising: (A) a radical-polymerizable monomer component; (B) a photopolymerization initiator component comprising (b1) an ?-diketone compound, (b2) an aliphatic tertiary amine compound having a tertiary amino group in which three saturated aliphatic groups are bonded to a nitrogen atom and one of the saturated aliphatic groups has an electron-withdrawing group as a substituent, and (b3) an s-triazine compound having a trihalomethyl group as a substituent, or a diaryliodonium salt compound; and a chemical polymerization initiator component (C) comprising (c1) an organic peroxide, and (c2) an N,N-di(hydroxyalkyl)-p-toluidine compound; which is packed separately at least in two packages so that the component (b2) and the component (b3) of the photopolymerization initiator component (B) are not packed together in a single package and the component (c1) and the component (c2) of the chemical polymerization initiator component (C) are not packed together in a single package.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: March 31, 2015
    Assignee: Tokuyama Dental Corporation
    Inventors: Kyoichi Fujinami, Kazuhiko Okishio
  • Patent number: 8915736
    Abstract: A curable dental composition comprising a monomer with a polyalicyclic structure element that can be used for filling and/or sealing of a root canal is described. Also described is a composition useful as a dental material and a method for preparing such a composition. New polymerizable monomers comprising at least one polyalicyclic structure element and certain ethylenic structure elements, which are particularly suitable for use in a dental composition, and the use of the new monomers in a dental composition are also described.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: December 23, 2014
    Assignee: Voco GmbH
    Inventors: Tobias Blömker, Manfred Stepputtis, Reinhard Maletz, Manfred Thomas Plaumann, Nils Fontein
  • Patent number: 8877830
    Abstract: The invention provides methods for inducing reversible chain cleavage of polymer chains in a crosslinked polymeric material or during polymerization of a polymeric material. Reversible cleavage of the polymer backbone is capable of relieving stress in the polymeric material as the bonds reform in a less stressed state. The invention also provides mixtures for making crosslinked polymeric materials, methods for making polymeric materials capable of reversible chain cleavage, materials made by the methods of the invention, and linear monomers containing reversible chain cleavage groups which are useful in the materials and methods of the invention. The mixtures of the invention may be dental restorative compositions used for forming dental restorative materials.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: November 4, 2014
    Assignee: The Regents of the University of Colorado, A Body Corporate
    Inventors: Christopher N. Bowman, Christopher Kloxin, Hee Young Park, Diana Leung
  • Patent number: 8871829
    Abstract: A radio-opaque marker for medical implants comprising between 10 and 90 weight percent of a biodegradable base component, between 10 and 90 weight percent of one or more radio-opaque elements selected from the consisting of I, Au, Ta, Y, Nb, Mo, Ru, Rh, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir and Bi as a marker component and 10 weight percent of residual components, the aforementioned components amounting to 100 weight percent.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: October 28, 2014
    Assignee: BIOTRONIK VI Patent AG
    Inventors: Bodo Gerold, Claus Harder, Heinz Müller, Eva Heublein, Nora Heublein, Christoph Heublein
  • Patent number: 8865790
    Abstract: Dental compositions and dental products having a resin derived from a cyclic diol such as 2,2,4,4-tetramethyl-1,3-cyclobutanediol.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: October 21, 2014
    Assignee: DENTSPLY International Inc.
    Inventors: Bernard Koltisko, Xiaoming Jin
  • Patent number: 8865791
    Abstract: This invention relates to a composition resulting from the mixture of a solid phase, comprising at least one calcium derivative powder in association with at least one radioopacifier and at least one polymer and optionally at least one non-radioopaque filler, all in powder form; and aqueous phase comprising water, at least one water-reducing agent, and at least one set accelerator; the ratio of solid phase to liquid phase ranging from 1.0 to 2.5, preferably from 1.5 to 2.2, more preferably from 2 to 2.15; said composition having a compressive strength of less than 40 MPa, preferably ranging from 1 to 15 MPa, preferably ranging from about 3 to about 12 MPa; this invention also relates to a kit and a method for the manufacture of the composition, and to a method for treating or retreating a canal root.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: October 21, 2014
    Assignee: Septodont ou Septodont SAS ou Specialites Septodont
    Inventors: Gilles Richard, Olivier Marie
  • Patent number: 8829074
    Abstract: A bone cement is provided that includes a solid component and a liquid component. The solid component and liquid component are mixed together to form the bone cement. After completion of the solid and liquid component mixing, the bone cement has an initial viscosity effective for manual application or manual injection onto or into a targeted anatomical location, e.g., bone, and the cement has stable viscosity range that over both time and temperature is effective for uniformly filling the targeted anatomical location, for example an osteoporotic bone or a fractured vertebral body, with minimal to no leakage of the cement from the targeted anatomical location. Additionally, both the initial viscosity and the stable viscosity of the bone cement are within a range that renders the bone cement effective for injection with a manually operated syringe or multiple syringes.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: September 9, 2014
    Assignee: DePuy Synthes Products, LLC
    Inventors: Andreas Boger, Christoph Sattig, Stefan Deusser
  • Patent number: 8821163
    Abstract: Colorless dental compositions for restoring the enamel layer of a tooth are disclosed. The colorless enamel compositions are combined with pigmented dentin compositions to provide a true color match and natural esthetics. Methods that utilize the compositions in placement/build-up techniques in direct restorations are also disclosed.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: September 2, 2014
    Assignee: Ivoclar Vivadent, Inc.
    Inventor: Terry Lee Culp
  • Publication number: 20140224151
    Abstract: The present invention relates to a solid composition comprising: a calcium silicate powder, a set accelerator in the form of a powder, a reinforcing filler in a solid form, a radio-opacifying agent in a solid form, at least one complementary ingredient selected from solid fibers or solid porous fillers, optionally a water-reducing agent in a solid form, and optionally solid pigments. The present invention also relates to a kit of parts for the preparation of a composition suitable for use in dentistry comprising in a first container a solid phase including the solid composition according to the invention, and in a second container an aqueous phase. The present invention also relates to a kit of parts for the preparation of a composition suitable for use in dentistry comprising a container, said container comprising at least two cells, the first cell comprising a solid phase including the solid composition of the invention and the second cell comprising an aqueous phase.
    Type: Application
    Filed: September 21, 2012
    Publication date: August 14, 2014
    Inventors: Gilles Richard, Olivier Marie, Laurianne Bafouguissa
  • Patent number: 8785513
    Abstract: The present invention relates to fiber-reinforced composites, particularly application-oriented composites useful in dental and medical applications/appliances, such as fiber reinforced dental composites, and to a method for the manufacture thereof. Particularly the invention concerns random glass fiber-reinforced restorative composite resins with semi-interpenetrating polymer network matrix and their use in dental applications like cavity fillings, core composites, provisional and semi-permanent crown and bridge composite, cements and adhesives.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: July 22, 2014
    Assignee: Stick Tech Oy
    Inventors: Lippo V. J. Lassila, Pekka K. Vallittu, Sufyan Garoushi, Karri Airola
  • Patent number: 8765836
    Abstract: A dental appliance comprising a hard, shaped body having at least one portion comprising a polymerized blend of: From 0% to about 50% of an uncrosslinked polymer capable of dissolving in component; From about 0% to 50% of a monofunctional polymerizable monomer; From about 0% to 40% of a highly crosslinked polymer in the form of ground particles having average diameters up to about 500 microns; From about 0% to 50% of a crosslinked polymer in the form of discrete particles having average diameters up to about 500 microns and being easily swellable by said monomer; and From about 5% to about 35% of a di- or polyfunctional crosslinking agent.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: July 1, 2014
    Assignee: DENTSPLY International Inc.
    Inventor: Benjamin J. Sun
  • Publication number: 20140121280
    Abstract: A dental composition comprising: a) about 1 to about 80% by weight of particulate material including: (i) calcium silicate, calcium aluminate, tetracalcium aluminoferrite, calcium phosphate, calcium sulfate, silica, alumina, calcium oxide, calcium hydroxide, or mixtures thereof; and b) about 1 to about 50% by weight liquid carrier including: (i) water-soluble polymer, (ii) surfactant, the surfactant is selected from the group consisting of alkyl sulfates, alkyl ether sulfates, and sarcosinates, and mixtures thereof; and (iii) water; wherein the particulate and liquid carrier being mixed together to form a hydrate gel material that can harden.
    Type: Application
    Filed: January 7, 2014
    Publication date: May 1, 2014
    Applicant: DENTSPLY International Inc.
    Inventors: Carolyn M. Primus, James L. Gutmann, Miklos M. Breuer, Steven R. Jefferies
  • Publication number: 20140100297
    Abstract: A bone cement is shown that includes a monomer, and a non-reactive substance that is fully miscible with the monomer. A resulting cured bone cement exhibits desirable properties such as modification in a stiffness of the material. Modified properties such a stiffness can be tailored to match bone properties and reduce an occurrence of fractures adjacent to a region repaired with bone cement. One example includes adjacent vertebral body fractures in vertebroplasty procedures.
    Type: Application
    Filed: December 10, 2013
    Publication date: April 10, 2014
    Applicant: DePuy Synthes Products, LLC
    Inventors: Elliott Gruskin, Andreas Boger, Andrea Montali, Kurtis Wheeler
  • Patent number: 8691886
    Abstract: To provide a dental hydraulic temporary sealing material composition setting faster than conventional composition, excellent adhesiveness with cavity, and extremely good operativity of filling in an oral cavity, the dental hydraulic temporary sealing material composition includes calcium sulfate, a vinyl acetate resin, an inorganic filler, alcohols having a boiling point of 110° C. or more, and a nonionic surfactant, whereby water on a cavity can adhere, without being repelled, to a paste surface due to hydrophilic effect between an organic solvent having proper hydrophilicity and the nonionic surfactant, the water can permeate and diffuse rapidly and stably through the inside of the paste by the hydrophilic effect so as to set faster than conventional composition, and since the hydrophilic effect is effective for adhesiveness with cavity, filling property in an oral cavity becomes extremely good.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: April 8, 2014
    Assignee: GC Corporation
    Inventors: Yutaka Shinozaki, Shouichi Fukushima, Hiroshi Kamohara
  • Patent number: 8618188
    Abstract: A bone cement is shown that includes a monomer, and a non-reactive substance that is fully miscible with the monomer. A resulting cured bone cement exhibits desirable properties such as modification in a stiffness of the material. Modified properties such a stiffness can be tailored to match bone properties and reduce an occurrence of fractures adjacent to a region repaired with bone cement. One example includes adjacent vertebral body fractures in vertebroplasty procedures.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: December 31, 2013
    Assignee: DePuy Synthes Products, LLC
    Inventors: Elliott Gruskin, Andreas Boger, Andrea Montali, Kurtis Wheeler
  • Patent number: 8609746
    Abstract: A bone cement composition which contains large-diameter (meth)acrylate polymer particles having an average particle diameter of 10 to 60 ?m, small-diameter (meth)acrylate polymer particles having an average particle diameter of 0.1 to 2.0 ?m, a (meth)acrylate monomer and a polymerization initiator, wherein the content of the small-diameter (meth)acrylate polymer particles is 5 to 30% by mass based on the total mass of the small-diameter (meth)acrylate polymer particles and the large-diameter (meth)acrylate polymer particles, and a part or a whole of the small-diameter (meth)acrylate polymer particles are contained in the form of aggregates having an average particle diameter of 30 to 50 ?m.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: December 17, 2013
    Assignees: Kyoto University, Ishihara Sangyo Kaisha, Ltd.
    Inventors: Takashi Nakamura, Koji Goto, Takehiro Shibuya, Yoshimichi Ueda, Tokuo Suita, Masashi Imamura, Hiroaki Nishii
  • Patent number: 8586101
    Abstract: The invention refers to an artificial bone mineral substitute material which comprises at least one ceramic and at least one water soluble non-ionic X-ray contrast agent. The invention refers to a composition for producing the same, which further comprises an aqueous liquid, as well as the use of the composition as a X-ray contrast medium.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: November 19, 2013
    Assignee: Bone Support AB
    Inventor: Lars Lidgren
  • Patent number: 8575274
    Abstract: The present invention relates to bone cements and, more particularly, to multi-solution bone cements and methods for making the same. An embodiment of the present invention provides multi-solution bone cements which include cross-linked PMMA beads, thereby providing for a significant increase in the polymer-to-monomer (P:M) ratio. Another embodiment of the present invention provides cross-linked PMMA beads which are surface modified with unsaturated carbon double bonds. A further embodiment of the present invention provides multi-solution bone cements made with PMMA-PMMA spherical brush polymers.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: November 5, 2013
    Assignee: Syracuse University
    Inventors: Julie M. Hasenwinkel, Imad K. Merkhan, Jeremy L. Gilbert
  • Patent number: 8552088
    Abstract: A cement for dental use, containing a first agent and a second agent, wherein both of the first agent and the second agent contain a polymerizable monomer (a) and a filler (b), wherein the first agent and/or the second agent further contains a photopolymerization initiator (c), wherein further as a chemical polymerization initiator (d), either one of the first agent and the second agent contains an oxidizing agent (f) and the other contains a reducing agent (g), the oxidizing agent (f) and the reducing agent (g) constituting a redox polymerization initiator, wherein the photopolymerization initiator (c) contains an ?-diketone, and the photopolymerization initiator (c) is contained in a total amount of from 0.010 to 0.100 parts by weight, based on 100 parts by weight of the total amount of the polymerizable monomer (a), wherein the chemical polymerization initiator (d) is contained in a total amount of from 0.
    Type: Grant
    Filed: December 25, 2008
    Date of Patent: October 8, 2013
    Assignee: Kuraray Noritake Dental Inc.
    Inventors: Hiroki Shinoda, Mitsuru Takei, Hidemi Nakayama
  • Patent number: 8546462
    Abstract: A bone cement is provided that includes a solid component and a liquid component. The solid component and liquid component are mixed together to form the bone cement. After completion of the solid and liquid component mixing, the bone cement has an initial viscosity effective for manual application or manual injection onto or into a targeted anatomical location, e.g., bone, and the cement has stable viscosity range that over both time and temperature is effective for uniformly filling the targeted anatomical location, for example an osteoporotic bone or a fractured vertebral body, with minimal to no leakage of the cement from the targeted anatomical location. Additionally, both the initial viscosity and the stable viscosity of the bone cement are within a range that renders the bone cement effective for injection with a manually operated syringe or multiple syringes.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: October 1, 2013
    Assignee: DePuy Synthes Products, LLC
    Inventors: Andreas Boger, Christoph Sattig, Stefan Deusser
  • Patent number: 8536243
    Abstract: The invention relates to a system for preparing a polymerized bone cement, including two components reacting with each other when they are mixed to form a solid polymer material. The first component may include a biocompatible acrylic polymer and an initiator capable of initiating a polymerization reaction. The second component may include a monomer capable of dissolving an acrylic polymer, a polymerization activator and a polymerization inhibitor, system in which the second component also includes a biocompatible acrylic polymer dissolved in said monomer, identical or different from the polymer of the first component with an average molar mass greater than 1,000,000 g/mol and a residual initiator content of less than 0.1% to form a gel with determined viscosity. Another object of the invention is a composition designed to constitute the second component of as system used to prepare such cement.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: September 17, 2013
    Assignee: Teknimed SAS
    Inventors: Alain Leonard, Cyril Sender, Claudine Lavergne, Benoît Donazzon
  • Patent number: 8455566
    Abstract: Provided herein are uncured dental composites suitable for, among other things, filling cavities in teeth.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: June 4, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Douglas Robert Anton, Gary Delmar Jaycox, Yongqing Huang
  • Patent number: 8436071
    Abstract: The invention is directed to an improved dental composition useful in the repair of cavities, apex repairs, root perforations and root canals. Disclosed is a dental composition and dental composition additive which have improved handling characteristics, for example improved viscosity and setting time. The addition of effective amounts of a modified cellulose and calcium chloride to available dental repair compounds, such as mineral trioxide compound, results in the improved dental composition without affecting the other characteristics of the dental repair compound.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: May 7, 2013
    Assignee: Saint Louis University
    Inventors: John F. Hatton, Benjamin S. Ber, Gregory P. Stewart
  • Patent number: 8426490
    Abstract: The invention relates to a dental composition comprising a monomer or mixture of monomers represented by the following structure (1) with 1,2R independently selected from H, alkyl (e.g. CH3C2H5), and Phenyl, 3,4R independently selected from H, alkyl (e.g. CH3), and halogen (Cl, Br, F), 5R independently selected from H, alkyl (e.g. CH3), m, n=1, 2 and x+y=2 to 10, with the proviso that if m=n=2, than x+y=2 and if m=n=1, than x+y=4 to 10. The invention also relates to a process for producing the monomer or mixture of monomers and the use thereof especially as dental composition.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: April 23, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Peter Bissinger, Karsten Dede, Adrian S. Eckert, Marion Kestel, Christoph Thalacker
  • Patent number: 8426488
    Abstract: An easily removable dental curable composition which prevents the fall or leakage of a temporary prosthetic appliance or a root canal filling material which is easily removed by bonding and adhering it to tooth, shows such high flowability that its operation is easy, has a long working time and excellent X-ray contrast properties and sealability and can be easily removed as required, and a filling kit. The dental curable composition comprises (A) a polymerizable monomer mixture containing a polymerizable monomer having an acid group in the molecule and (B) a polymerization initiator, wherein the component (A) contains (A?) a long-chain polymerizable monomer having a structure with a chain length of 17 or more atoms and/or the composition further comprises (D1) a soft resin material.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: April 23, 2013
    Assignee: Sun Medical Co., Ltd.
    Inventors: Tatsuya Ori, Akari Yamamoto, Masami Arata, Maho Yoshikawa
  • Patent number: 8420113
    Abstract: The present invention is directed to a medical device, specifically a prosthesis which utilizes a novel class of blends between biodegradable polymers and bioceramics for medical device applications allowing one to capitalize on the biodegradable nature of these two distinct materials while enhancing the strength of these devices through the addition of various amounts of bioactive ceramic and glasses to biodegradable polymers. The blend may be fabricated into a medical device such as a stent or a distal protection device, and may incorporate various agents to enhance radioapacity and/or pharmacological function. In addition, the blend may be used as a coating to a medical device.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: April 16, 2013
    Inventor: Jonathon Z. Zhao
  • Patent number: 8415407
    Abstract: A bone cement comprising a first component and a second component, wherein contacting the first component and the second component produces a mixture which attains a high viscosity an initial period and the viscosity of the mixture remains relatively stable for a working time of at least 5 minutes after the initial setting period, and the mixture is suitable for in-vivo use.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: April 9, 2013
    Assignee: DePuy Spine, Inc.
    Inventors: Mordechay Beyar, Oren Globerman, Ronen Shavit, Hila Wachsler-Avrahami
  • Patent number: 8404760
    Abstract: Polymerizable dental material which contains (a) at least one radically polymerizable compound according to the general formula I (b) initiators for radical polymerization; and (c) filler.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: March 26, 2013
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, Jörg Angermann, Urs Karl Fisher, Volker Rheinberger
  • Patent number: 8394869
    Abstract: Disclosed are photopolymerizable compositions suitable for uses such as dental composite resins, and that comprise (A) a radical-polymerizable monomer, (B) a photopolymerization initiator that comprises (B1) an ?-diketone compound, (B2) a photoacid generating agent, (B3) an aromatic amine compound, and (C) an organic filler containing a phthalate ester fluorescent agent.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: March 12, 2013
    Assignee: Tokuyama Dental Corporation
    Inventors: Hironobu Akizumi, Junichiro Yamagawa
  • Patent number: 8383734
    Abstract: The present invention relates to bone cements and, more particularly, to acrylic-based orthopedic bone cements, their use in spinal applications, and methods for making the same. An embodiment of the present invention provides a method of grafting PMMA brushes on cross-linked PMMA nanospheres comprising at least one of the following steps: performing a hydrolysis reaction of surface methyl ester groups of said cross-linked PMMA nanospheres to form surface carboxylic acid groups of said cross-linked PMMA nanospheres; forming a 2-aminoethyl acrylate compound; coupling said surface carboxylic acid groups of said cross-linked PMMA nanospheres with said 2-aminoethyl acrylate compound to form a coupled compound with an initiating site; and grafting said PMMA brushes onto said initiating site.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: February 26, 2013
    Assignee: Syracuse University
    Inventors: Julie M. Hasenwinkel, Jeremy L. Gilbert, Danieli C. Rodrigues, Rebecca Bader
  • Patent number: 8367748
    Abstract: A filler which is surface-modified with a compound of the formula [(PG)-R1—Z]n—SP—[Y—R2-(AG)]m is particularly suitable for use in dental materials, for the preparation of adhesives, coatings and composites.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: February 5, 2013
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, Simone Klapdohr, Ulrich Salz, Jorg Zimmermann, Volker M. Rheinberger
  • Publication number: 20130023879
    Abstract: A method for augmenting a tissue including introducing into the tissue a first thermoplastic material at a first condition; treating the first thermoplastic material to achieve a second condition that includes an at least partially crystalline skin; and introducing a second material into the tissue whereby the first thermoplastic material and the second material are contained by the at least partially crystalline skin. Also a method of fracture reduction in a tissue including exposing to gamma radiation a mass of polycaprolactone characterized by a first shape; heating the mass of irradiated polycaprolactone above its melting temperature; introducing the heated mass of polycaprolactone into the tissue annulus to deform it from the first shape; allowing the material to return to the first shape.
    Type: Application
    Filed: September 13, 2012
    Publication date: January 24, 2013
    Inventors: Sean H. Kerr, Ali Cem Recber
  • Patent number: 8314162
    Abstract: 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: Grant
    Filed: May 28, 2009
    Date of Patent: November 20, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Bettina Hailand, Adrian S. Eckert, Karsten Dede
  • Publication number: 20120270184
    Abstract: This invention relates to a composition resulting from the mixture of a solid phase, comprising at least one calcium derivative powder in association with at least one radioopacifier and at least one polymer and optionally at least one non-radioopaque filler, all in powder form; and aqueous phase comprising water, at least one water-reducing agent, and at least one set accelerator; the ratio of solid phase to liquid phase ranging from 1.0 to 2.5, preferably from 1.5 to 2.2, more preferably from 2 to 2.15; said composition having a compressive strength of less than 40 MPa, preferably ranging from 1 to 15 MPa, preferably ranging from about 3 to about 12 MPa; this invention also relates to a kit and a method for the manufacture of the composition, and to a method for treating or retreating a canal root.
    Type: Application
    Filed: November 14, 2011
    Publication date: October 25, 2012
    Applicant: SEPTODONT ou SEPTODONT SAS ou SPECIALITES SEPTODONT
    Inventors: Gilles Richard, Olivier Marie
  • Patent number: 8263681
    Abstract: 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: Grant
    Filed: December 21, 2007
    Date of Patent: September 11, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Bradley D. Craig, Gregory A. Kobussen
  • Patent number: 8236871
    Abstract: 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: Grant
    Filed: May 31, 2007
    Date of Patent: August 7, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Reinhold Hecht, Manfred Ludsteck, Gioacchino Raia, Joel D. Oxman
  • Publication number: 20120195848
    Abstract: The present invention provides bioactive bone cements that not only have sufficient radiopacity, low physiological toxicity, and requisite mechanism strength, but also promote local bone in-growth. The bone cement utilizes strontium salts as radiopacifiers, and comprises a powder component and a liquid component. In an embodiment, the powder component comprises a strontium salt, poly(methyl methacrylate) (PMMA), and a polymerization initiator; and the liquid component comprises methyl methacrylate (MMA) as reactive monomers and a polymerization accelerator.
    Type: Application
    Filed: December 15, 2011
    Publication date: August 2, 2012
    Applicant: The University of Hong Kong
    Inventors: William Weijia Lu, Raymond Wing Moon Lam, Keith Dip-Kei Luk, Zhao Yang Li
  • Patent number: 8232327
    Abstract: 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: Grant
    Filed: November 12, 2009
    Date of Patent: July 31, 2012
    Assignee: Howmedia Osteonics Corp
    Inventors: Venkat R. Garigapati, Brian J. Hess, Jon Ahola
  • Patent number: 8182860
    Abstract: 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: Grant
    Filed: March 23, 2007
    Date of Patent: May 22, 2012
    Assignee: JGC Catalysts and Chemicals Ltd.
    Inventors: Keisuke Ohtsuka, Yoshifumi Miyano, Hirokazu Tanaka, Eiko Tanaka, legal representative
  • Patent number: 8183305
    Abstract: The invention provides an infiltrant for dental application that comprises crosslinking monomers, having a penetration coefficient PC>50 cm/s. In accordance with the invention the infiltrant comprises at least one nanoscale radiopaque filler and/or radiopaque organic compound, while ensuring sufficient contrast to surrounding tooth and bone tissue in X-ray diagnostics.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: May 22, 2012
    Assignee: Ernst Muhlbauer GmbH & Co. KG
    Inventors: Stephan Neffgen, Swen Neander, Dierk Lübbers
  • Patent number: 8178595
    Abstract: Zirconium-containing BaO- and PbO-free X-ray opaque glasses having a refractive index nd of about 1.480 to about 1.517 and a high X-ray opacity with an aluminum equivalent thickness of at least about 180% are provided. Such glasses are based on a SiO2—B2O3—Cs2O—K2O—La2O3 system with additions of Al2O3, Li2O, Na2O and/or ZrO2. Such glasses may be used, in particular, as dental glasses or as optical glasses.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: May 15, 2012
    Assignee: Schott AG
    Inventors: Simone Monika Ritter, Oliver Hochrein, Sabine Pichler-Wilhelm
  • Publication number: 20120115981
    Abstract: 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: Application
    Filed: July 12, 2010
    Publication date: May 10, 2012
    Applicants: UNIVERSITA' DEGLI STUDI DI TORINO, POLITECNICO DI TORINO
    Inventors: Enrica Verne', Marta Miola, Sara Ferraris, Alessandro Masse, Alessandro Bistolfi, Maurizio Crova, Giovanni Maina