Dental Patents (Class 106/35)
  • Patent number: 11117829
    Abstract: The invention relates to a lithium silicate glass ceramic, which contains at least lithium disilicate as a crystal phase, and lithium aluminum silicate as further crystal phase. The lithium silicate glass ceramic in its initial composition contains Al2O3 at 1.5 to 3.5 percent by weight, and K2O at 0.6 to 1.8 percent by weight.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: September 14, 2021
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Markus Vollmann, Irmgard Wissel, Marcel Meegdes, Carsten Wiesner
  • Patent number: 11111151
    Abstract: The invention has for its object to use an evaporation-spray drying process thereby providing layered silicate powder granules, each one containing a flat particle having an opening or recess in its surface center. Each of the layered silicate powder granule contains a flat particle including a layered silicate formed by evaporation-spray drying and a rheology modifier for modifying the crystal edge face of the layered silicate and having an opening or recess in its surface center.
    Type: Grant
    Filed: September 4, 2017
    Date of Patent: September 7, 2021
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiroshi Sakuma, Kenji Tamura
  • Patent number: 11109949
    Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: September 7, 2021
    Assignee: Ivoclar Vivadent AG
    Inventors: Marcel Schweiger, Volker Rheinberger, Harald Bürke, Wolfram Höland, Elke Signer-Apel, Christian Ritzberger, Dmitri Brodkin
  • Patent number: 11071693
    Abstract: The present invention relates to an aqueous dental glass ionomer composition for use in the treatment of cavitated carious lesions, which composition comprises a water-soluble, polymerizable polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the polymerizable polymer has a polymer backbone and pendant groups having one or more polymerizable carbon-carbon double bonds. The dental glass ionomer composition is used as a permanent direct restoration.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: July 27, 2021
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Szillat Florian, Caroline Renn, Christoph Weber, Uwe Walz, Joachim Klee
  • Patent number: 11033468
    Abstract: The present invention provides a liquid dispersion capable of stably maintaining the dispersed state for a long time and suitably applicable to both O/W type cosmetic products and W/O type cosmetic products. The present invention also provides a cosmetic raw material containing the liquid dispersion and a cosmetic product containing the liquid dispersion. The present invention provides a liquid dispersion containing a polyol (A); a nonionic surfactant (B); and a hydrophobized inorganic powder (C), wherein the water content in 100% by mass of the liquid dispersion is 1% by mass or less.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: June 15, 2021
    Assignee: SAKAI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Takuro Ashida, Koichiro Magara, Akifumi Sano, Ayana Shike
  • Patent number: 11013836
    Abstract: Disclosed are biodegradable glass substrates that are useful as functional elements of solid-state devices. In particular, biodegradable glass substrates having a rapidly degradable glass and a slowly degradable glass provide a structural platform that completely dissolves following a desired operational lifetime of devices such as implanted electronic devices, implanted sensor devices, and optical fibers.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: May 25, 2021
    Assignee: The Curators of the University of Missouri
    Inventors: Chang-Soo Kim, Richard K. Brow, Delbert E. Day
  • Patent number: 11013669
    Abstract: The invention relates to a radically polymerizable dental material having photochromic properties, which contains at least one compound of formula (I) and optionally radically polymerizable monomers, an initiator for radical polymerization and other components.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: May 25, 2021
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, Thorsten Bock, Martina Hauner-Westphal, Alexandros Gianasmidis, Iris Lamparth, Bernd Strehmel, Thomas Brömme
  • Patent number: 11008262
    Abstract: Provided herein is a composition for use as a hardening regulator, e.g. hardening accelerator or hardening retarder, for building materials, as well as methods for producing thereof. The composition is characterized by a biphasic nature in which solid calcium silicate nanoparticles are dispersed in an aqueous solution comprising inorganic water soluble iron, and possibly zinc, silicate and calcium, species. Additional components such as inorganic ions and silica nanoparticles can be present. Depending on the relative ratio of each component, the composition can be used either for retarding or for accelerating the hardening process of a building material such as cement or concretes. The so-obtained building material further shows an enhanced strength upon compressive forces applied thereon.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: May 18, 2021
    Assignee: ECOLE POLYTECHNIQUE FÉDÉRALE DE LAUSANNE (EPFL)
    Inventors: Abhishek Kumar, Paul Bowen
  • Patent number: 10988399
    Abstract: Methods for making articles comprising crystalline material. Exemplary articles made by a method described herein include electronics enclosure (e.g., a watch case, cellular phone case, or a tablet case).
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: April 27, 2021
    Assignee: 3M Innovative Properties Company
    Inventors: Anatoly Z. Rosenflanz, Jason D. Anderson, Noah O. Shanti, Fabian Stolzenburg, Jean A. Tangeman
  • Patent number: 10988403
    Abstract: To provide a glass composition which can be used for a dental porcelain or a dental ceramics coloring material, and has low temperature meltability, acid resistance and preservation stability under the humid environment which are required for a dental porcelain or a dental ceramics coloring material, and a dental porcelain and dental ceramics coloring material which contain the glass composition of the present disclosure. To provide a low melting glass composition with softening point (Ts) less than 600° C. comprising as a component; SiO2: 55.0 to 75.0 wt. %, B2O3: 6.1 to 12.0 wt. %, Al2O3: 2.0 to 8.0 wt. %, ZnO: 2.0 to 8.5 wt. % and two or more kinds of alkali metal oxide: 10.5 to 20.0 wt. %.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: April 27, 2021
    Assignee: SHOFU INC.
    Inventors: Keita Kawata, Masanori Goto, Kenji Kono
  • Patent number: 10953131
    Abstract: Provided are a method for rapidly producing a calcium phosphate molded article having high strength with high shaping precision, a calcium phosphate molded article produced by the method, and a material for transplantation. Disclosed is a method for producing a calcium phosphate molded article, the method including: step (a) of forming a layer containing a calcium phosphate powder having a ratio of the numbers of atoms of Ca/P of 1.4 to 1.8 on a substrate; and step (b) of producing a calcium phosphate molded article by jetting an organic acid solution having a pH of 3.5 or lower and including an organic acid whose calcium salt has a solubility in water of 1 g/100 mL or less, through a nozzle unit into a liquid droplet state, thereby dropping the organic acid solution onto the layer containing a calcium phosphate powder formed in step (a).
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: March 23, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Hiroshi Ota, Manabu Katsumura, Kazuya Kawasaki, Yoshio Ishii, Hideo Fushimi, Takahiro Hiratsuka, Ai Okamura, Mamoru Nishitani, Masayuki Ezumi
  • Patent number: 10940097
    Abstract: A glass based fibrous filler having bioactive particles such as hydroxyapatite deposited on a surface of glass fibers. Methods of preparing the fibrous filler are specified. A resin composite containing a polymerizable system reinforced with the fibrous filler, as well as a biomedical restoration based on the cured resin composite are also provided.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: March 9, 2021
    Assignee: Imam Abdulrahman Bin Faisal University
    Inventor: Abdul Samad Khan
  • Patent number: 10925811
    Abstract: A composite filler comprising thermally processed porous inorganic mixed particles of silica and at least one heteroparticle selected from the group consisting of zirconia, hafnia, or yttria and a polymer occupying the pores of the porous inorganic mixed particles, wherein the porous inorganic mixed particles are thermally processed at a temperature of from 650 to 900° C., as well as a dental restorative comprising a resin and a composite filler, and optionally other fillers, wherein said resin has a refractive index that increases upon curing, and wherein the opacities of the both uncured and cured restorative are less than 45.
    Type: Grant
    Filed: March 18, 2017
    Date of Patent: February 23, 2021
    Assignees: Kerr Corporation, Transparent Materials, LLC
    Inventors: Joseph F Bringley, Patrick M Lambert, Weijie Huang
  • Patent number: 10920369
    Abstract: Storage stable aqueous dispersions of ?-ketocarbonyl functional organosilicon compounds are prepared using a non-ionic emulsifier having an HLB of less than 15. The compositions are suitable for treating textiles.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: February 16, 2021
    Assignee: WACKER CHEMIE AG
    Inventors: Christof Brehm, Anton Heller, Elisabeth Hoelzlwimmer
  • Patent number: 10920021
    Abstract: This disclosure relates to polymerizable silicone compositions, methods for polymerizing such compositions, and to polymerized silicone compositions formed thereby. In one embodiment, a polymerizable composition includes one or more first organosiloxanes or organosilanes, each comprising a plurality of silicon hydride functional groups, one or more second organosiloxanes or organosilanes, each comprising a plurality of reactive heterocycloalkyl functional groups; and one or more third organosiloxanes or organosilanes, each comprising at least about one silicon hydride functional group and at least about one reactive heterocycloalkyl functional group; and an effective amount of a borane catalyst, present, for example, in an amount within the range of 0.0005 wt % to about 10 wt %, wherein the ratio of reactive heterocycloalkyl functional groups to reactive silicon hydride functional groups in the composition is in the range of 1:5 to 5:1.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: February 16, 2021
    Assignee: Saint-Gobain Performance Plastics Corporation
    Inventors: Jianfeng Zhang, Michael J. Tzivanis, Xipeng Liu, Jian L. Ding
  • Patent number: 10869737
    Abstract: The invention is directed to a composition that safely removes a cured dental cement or resin from metal brackets, metal braces, and enamel surfaces of teeth. It contains eugenol, isoeugenol, methyl-eugenol or an isomer thereof. A method for removing orthodontic fixtures adhered with a dental cement or resin to the enamel surfaces of teeth from these surfaces by contacting the dental cement or resin with a composition containing eugenol.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: December 22, 2020
    Assignee: King Abdulaziz University
    Inventors: Ahmed Samir Ibrahim Bakry, Mona Aly Abbassy, Amal Linjawi, Ali Habib Hassan, Ahmed Fathy Hanafy, Gihan Salah Labib, Amal Mohammed S Abushal
  • Patent number: 10835452
    Abstract: A dental composition comprising pre-reacted particulate mineral trioxide aggregate (MTA) dispersed in a hydrogel wherein the content of MTA in the composition is in the range of 20 to 50 percent by weight based on the total weight of the composition.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: November 17, 2020
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Todd Patrick Berger, Adam Zachary Baratz, Sheridan Lynn Rose
  • Patent number: 10813847
    Abstract: Dental prosthetic restoration coatings made of dielectric materials, methods of fabricating the same, as well as methods of testing dental prosthetic restorations are provided. A prosthetic restoration coating can include dielectric materials such as Al2O3, ZrO2, SiNx, SiC, and SiO2. Application can take place using plasma enhanced chemical vapor deposition (PECVD) methods, and alternating materials can be used to achieve desired anticorrosive, structural integrity, hardness, adhesion, and color characteristics. A testing method can include immersing a test device in solutions of differing pH, with or without abrasive steps. The cycling can include an acidic solution and a basic solution, with an optional neutral solution. As the abrasive step, a chewing simulator can be utilized.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: October 27, 2020
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: Josephine F. Esquivel-Upshaw, Fan Ren, Arthur E. Clark
  • Patent number: 10758326
    Abstract: A zirconia sintered body is provided in which the strength between layers of powders is improved. A flexural strength of a test sample of the zirconia sintered body, measured pursuant to JISR1601, is not less than 1100 MPa. The test sample is formed by preparing a plurality of zirconia powders, each containing zirconia and a stabilizer that suppresses phase transition of zirconia, the zirconia powders differing in a composition, layering the zirconia powders to form a zirconia composition, and sintering the zirconia composition to form a zirconia sintered body. The flexural strength is measured such that a load point is positioned at a boundary of the zirconia powders, the boundary traversing the test sample of the sintered body along a direction of load application.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: September 1, 2020
    Assignee: KURARAY NORITAKE DENTAL INC.
    Inventors: Yoshihisa Yamada, Atsushi Matsumoto, Yoshihisa Ito
  • Patent number: 10758639
    Abstract: The present invention relates to pharmaceutical compositions and methods for the treatment of peri-implant diseases, in particular peri-implant disease characterized by the destruction of the crest of the alveolar bone supporting the implant. Specifically, the method comprising the step of applying to a peri-implant bone displaying crestal resorption a 5 pharmaceutical composition comprising biocompatible bone augmentation material coated with a matrix composition which provides local controlled and prolonged release of at least one pharmaceutically active agent at the bone loss site.
    Type: Grant
    Filed: September 27, 2015
    Date of Patent: September 1, 2020
    Assignee: Polypid Ltd.
    Inventor: Noam Emanuel
  • Patent number: 10752536
    Abstract: According to one embodiment, a glass-ceramic composition may include from about 60 mol. % to about 75 mol. % SiO2; from about 5 mol. % to about 10 mol. % AI2O3; from about 2 mol. % to about 20 mol. % alkali oxide R2O, the alkali oxide R2O including Li2O and Na2O; and from 0 mol. % to about 5 mol. % alkaline earth oxide RO, the alkaline earth oxide RO including MgO. A ratio of Al2O3 (mol. %)) to the sum of (R2O (mol. %)+RO (mol. %)) may be less than 1 in the glass-ceramic composition. A major crystalline phase of the glass-ceramic composition may be Li2Si2O5. A liquidus viscosity of the glass-ceramic composition may be greater than 35 kP. The glass-ceramic composition may be used to form the glass clad layer(s) of a laminated glass article.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: August 25, 2020
    Assignee: Corning Incorporated
    Inventors: Heather Debra Boek, Natesan Venkataraman, Mark Owen Weller
  • Patent number: 10751262
    Abstract: The invention relates to a curable dental composition comprising a cationically hardenable compound (A) comprising at least two aziridine moieties, a starter (B) being suitable to cure the hardenable compound (A), polymeric particles as filler component (C), the polymeric particles having a maximum particle size of 150 ?m or below and the component(s) the polymeric particles are made of being based on fluoropolymers comprising more than 99% monomer repeating units of tetra fluoro ethylene. The invention also relates to the use of such composition for producing a dental impression material or a dental retraction material.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: August 25, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Andreas R. Maurer, Hendrik Grupp, Joachim W. Zech, Arne Thaler, Kai H. Lochhaas, Klaus Hintzer, Christoph Schulte
  • Patent number: 10751264
    Abstract: The present application is directed to a curable composition and a method for isolating a working area in a patient's mouth. The curable composition can include a borate-crosslinked polysiloxane, at least one ethylenically unsaturated monomer comprising at least two polymerizable groups, and an initiator.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: August 25, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Bradley D. Craig, Joel D. Oxman, Thomas P. Klun, Richard B. Ross
  • Patent number: 10729523
    Abstract: A dental restoration, a method for the production of a dental restoration and a kit. The dental restoration comprises an outer component, in particular a shell, and an inner component, in particular a core. The inner component and the outer component contain composite material. The outer component is mountable or mounted on the inner component. The inner component is designed for attachment onto a tooth preparation, in particular a tooth stump.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: August 4, 2020
    Assignee: COLTÈNE/WHALEDENT AG
    Inventors: Ralf Böhner, Cornelia Kopfmann, Martin Schlüter, Martin Schaufelberger
  • Patent number: 10722333
    Abstract: A medium for a dental structure includes a first portion having a first physical property arranged to connect with a first dental component of the dental structure; and a second portion having a second physical property arranged to connect with a second dental component of the dental structure, wherein the combination of the first portion and the second portion is arranged to minimize stress established between the first dental component and/or the second dental component when the first dental component combines with the second dental component.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: July 28, 2020
    Assignee: City University of Hong Kong
    Inventors: Xinrui Niu, Bing Chen, Jian Lu
  • Patent number: 10676389
    Abstract: A glass article includes an alkali-alkaline-alumino-silicate composition, wherein the glass article has a coefficient of thermal expansion (CTE) in a range from about 110×10?7/° C. to about 130×10?7/° C. over a temperature range of 0-300° C.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: June 9, 2020
    Assignee: Corning Incorporated
    Inventors: Jeffrey Todd Kohli, Ronald Leroy Stewart
  • Patent number: 10667893
    Abstract: In a tooth whitening method, a whitening composition is applied to at least one tooth. The whitening composition is maintained on the at least one tooth for a first time period. After the first time period, a light radiation is directed toward the at least one tooth for a second time period. The first time period has a duration greater than 50% of a total duration of the first and second time periods. The whitening composition is removed from the at least one tooth.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: June 2, 2020
    Assignee: THE PROCTER & GAMBLE COMPANY
    Inventor: Paul Albert Sagel
  • Patent number: 10646309
    Abstract: The invention discloses a process for producing dental shaped parts which consists entirely of porous glass without crystalline portions. The density of the blank is between 50% and 95% of its theoretical density. It has a discoidal shape with a diameter of at least 20 mm. The blank is produced by a process in which glass powder is first pressed at a pressure of between 10 MPa and 300 MPa and this green body is (pre-)sintered at a temperature of between 580° C. and 750° C. to form a blank of porous glass without crystalline portions. From the obtained blank, monolithic dental shaped parts can be obtained by mechanical processing followed by sintering, wherein a process according to the invention for stabilizing the shape of the shaped parts is used.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: May 12, 2020
    Assignee: Ivoclar Vivadent AG
    Inventors: Jörg Reinshagen, Sascha Cramer Von Clausbruch, Michael Winterling
  • Patent number: 10631961
    Abstract: A zirconia ceramic body for use with dental prosthetics has an L* value between 10 and 20 for a sample thickness 011 to 1.3 mm in accordance with CIE L*a*b* colorimetric system. The zirconia ceramic body can have between 6-20 wt % or 7.20 wt % of yttria based on total weight percent of the zirconia ceramic body. The zirconia ceramic body is subsequently finally sinterable to produce a translucent zirconia sintered body. In one aspect, the sintered body has a total light transmittance of at least 36% and less than 50% to light with a wavelength of 400 nm, and less than 55% to light with a wavelength of 600 nm, at a thickness of 0.6 mm, measured using a LAMBDA 35 UV/VIS Spectrophotometer manufactured by Perkin Elmer.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: April 28, 2020
    Assignee: B & D Dental Corporation
    Inventors: Yunoh Jung, Daniel Yonil Jung
  • Patent number: 10626045
    Abstract: The invention relates to a lithium silicate glass ceramic which contains lithium silicate as main crystal phase and scheelite and/or powellite as further crystal phases. The invention also relates to a corresponding starting glass, a starting glass with nuclei, a process for producing the glass ceramic and the starting glasses as well as the use thereof.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: April 21, 2020
    Assignee: Ivoclar Vivadent AG
    Inventors: Marc Dittmer, Christian Ritzberger, Markus Rampf
  • Patent number: 10610459
    Abstract: Process for the preparation of a particulate dental filler composition, comprising the following steps: (a) introducing a mixture containing (a1) a silica precursor component, and (a2) a solution or dispersion of one or more compounds selected from compounds of aluminum, zinc, titanium, zirconium, tungsten, ytterbium, hafnium, bismuth, barium, strontium, silver, tantalum, lanthanum, tin, boron, and cerium, into a pulsed reactor; (b) converting the silica precursor component and the compounds into a particulate mixed oxide with a pulsed gas flow resulting from flameless combustion; (c) isolating the particulate mixed oxide from the pulsed reactor; (d) optionally subjecting the particulate mixed oxide to a heat treatment step; and (e) treating the optionally heat-treated particulate mixed oxide with a silane treatment agent for obtaining a particulate dental filler composition.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: April 7, 2020
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Walz Uwe, Christoph Weber, Maier Maximillian
  • Patent number: 10610462
    Abstract: The present disclosure relates to an aqueous dental glass ionomer composition comprising a reactive particulate glass, a water-soluble, polymerizable polymer which is reactive with the particulate glass in a cement reaction, a hydrolysis-stable, water-soluble monomer having a single polymerizable double bond and optionally a carboxylic acid group or hydroxyl group; and a polymerization initiator system, wherein the polymerizable polymer is obtainable by a process comprising a step of polymerizing a mixture comprising a first polymerizable monomer comprising at least one optionally protected carboxylic acid group and a first polymerizable organic moiety, and optionally a second copolymerizable monomer comprising one or more optionally protected primary and/or secondary hydroxyl and/or amino group(s) and a second polymerizable organic moiety, for obtaining an water-soluble polymer; a step of coupling to the water-soluble polymer a compound having a polymerizable moiety and a functional group reactive with an op
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: April 7, 2020
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Caroline Renn, Oliver Elsner, Maximilian Maier, Florian Szillat, Joachim Klee, Christoph Weber, Uwe Walz, Christian Scheufler, Helmut Ritter, Andrew Lichkus, Xiaoming Jin
  • Patent number: 10603250
    Abstract: The present invention provides a dentinal tubule occlusion material excellent in terms of initial degree of dentinal tubule occlusion, resistance of dentinal tubule occlusion to acids, handling properties, and storage stability. The present invention relates to an one-pack type dentinal tubule occlusion material comprising fluorapatite particles (A) having an average particle diameter of 0.6 to 10 ?m, inorganic particles (B) having an average particle diameter of 0.6 to 10 ?m and reactive with water to form apatite, and a non-aqueous dispersant (C).
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: March 31, 2020
    Assignee: KURARAY NORITAKE DENTAL INC.
    Inventors: Kenji Hatanaka, Shumei Ishihara
  • Patent number: 10561583
    Abstract: The present invention relates to dental cement composition that is more biocompatible and stimulates quicker healing of the damaged dental tissues. Specifically, the invention relates to dental cement composition comprising a combination of dental repair compounds consisting of nanoparticles of Tri-calcium Silicate (Ca3SiO5), Di-calcium Silicate (Ca2SiO4), Calcium Titanate (CaTiO3) and Hydroxyapatite (Ca10(PO4)6(OH)2).
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: February 18, 2020
    Assignee: SHILPA MEDICARE LIMITED
    Inventors: Gunneswara Subramanya Vara Prasad Rangabhatla, Shrisha Belaldavara, Ratna Phani Ayalasomayajula
  • Patent number: 10548818
    Abstract: The application relates to a kit of parts for preparing a glass ionomer composition for dental use, the kit comprising a Paste A and a Paste B, Paste A comprising water, acid-reactive inorganic filler C, non acid-reactive filler A, Paste B comprising water, polyacid, complexing agent, non acid-reactive filler B, the mean particle size of non acid-reactive filler B being larger than the mean particle size of non acid-reactive filler A, the water content of the composition obtained when mixing Paste A and Paste B being below 20 wt.-%. The application also relates to a device for storing such a kit of parts and the use of the kit of parts and/or the device for preparing a dental cement, dental filling material, dental core build up material or dental root channel filling material.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: February 4, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Michael Jahns, Peter Braun, Robert Peez, Markus Mikulla, Rainer A. Guggenberger
  • Patent number: 10545214
    Abstract: An electron paramagnetic resonance device includes a crystalline, emission-sensitive mass and a housing containing the device. The mass includes structurally incorporated carbonate content in a range of about 3% by weight to about 10% by weight of the mass, one or more structurally incorporated non-calcium metallic cations, and one or more structurally incorporated phosphate anions. When irradiated with a known source, the EPR device may function as a reference. When unirradiated, the EPR may function as a dosimeter. As a dosimeter, the EPR device may be used as a personal dosimeter or as a monitor for inanimate objects being subjected to radiation sources. The EPR dosimeter may be used for both gamma radiation and neutron radiation measurements.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: January 28, 2020
    Assignee: ADA FOUNDATION
    Inventors: Laurence C. Chow, Shozo Takagi, Marc Frederic Desrosiers
  • Patent number: 10537411
    Abstract: The invention relates to a method for producing a monolithic form body, in particular a dental restoration, comprising the steps of: providing of a blank, producing of the form body through pressing and/or machining of the blank, and softening of the form body exclusively in its surface region by irradiation with infrared radiation.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: January 21, 2020
    Assignee: DENTSPLY SIRONA Inc.
    Inventor: Markus Vollmann
  • Patent number: 10509092
    Abstract: A dosimeter for EPR dosimetry systems includes a carbonated hydroxyapatite cement formed by mixing a cement powder and a cement liquid in a ratio of a range of about 0.5 to 5.0 powder-to-liquid ratio. The cement powder includes one or more calcium phosphate compounds and one or more carbonate compounds. The cement liquid includes a sodium phosphate solution. The cement, when irradiated by a radiation source, is capable of producing a measurable signal as a spectrally clean EPR spectrum. Furthermore, the measurable signal is proportional to the received radiation dose.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: December 17, 2019
    Assignee: ADA FOUNDATION
    Inventors: Laurence C. Chow, Shozo Takagi, Marc Frederic Desrosiers
  • Patent number: 10500139
    Abstract: This invention provides fluid formulations and materials produced therefrom for repairing dental and bone defects, processes for the production of the fluid formulations and materials, and to uses of these formulations and materials. In particular, the invention provides the use cationic polymers such as polylysine in these formulations and materials, and the advantageous properties derived therefrom which include mechanical and antibacterial properties.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: December 10, 2019
    Assignee: UCL BUSINESS LTD
    Inventor: Anne Margaret Young
  • Patent number: 10495625
    Abstract: Provided are: a system for predicting the residual lifespan of a fire-damaged concrete structure and a method therefor, the system being capable of acquiring sample data by performing a chemical analysis on a sample obtained from the fire-damaged concrete structure, comparing the obtained sample data with data pre-stored in a standardization DB so as to quickly predict the residual lifespan of the fire-damaged concrete structure, and accurately and scientifically assessing the level of fire damage of the fire-damaged concrete structure so as to perform appropriate repair and reinforcement of the fire-damaged concrete structure.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: December 3, 2019
    Assignee: KOREA INSTITUTE OF CIVIL ENGINEERING AND BUILDING TECHNOLOGY
    Inventor: Young Sun Heo
  • Patent number: 10485737
    Abstract: The present invention provides a dental curable composition comprising (A) a polymerizable monomer, (B) an inorganic filler, and (C) a polymerization initiator, wherein the polymerizable monomer (A) comprises (a1) a polyfunctional (meth)acrylate monomer comprising urethane bonds, (a2) a polyfunctional (meth)acrylate monomer comprising hydroxyl groups, and (a3) a polyfunctional (meth)acrylate monomer comprising carboxyl groups, the ratio by weight of (a1):(a2)+(a3) ranges from 1:1 to 9:1, the number of hydroxyl groups is not more than 0.5 relative to the number of (meth)acryloyl groups in one molecule of the above-mentioned (a2), and the number of carboxyl groups is not more than 0.5 relative to the number of (meth)acryloyl groups in one molecule of the above-mentioned (a3).
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: November 26, 2019
    Assignee: KABUSHIKI KAISHA SHOFU
    Inventors: Shuhei Takahashi, Hidefumi Fujimura, Jun Uchida, Mitsuji Teramae
  • Patent number: 10471669
    Abstract: The invention is directed to a reusable mold for making a contact lens and the reusable mold has at least one of the mold halves is made from an oxide glass having a Knoop Hardness less than HK 350. The invention is also directed to a method for making an optical part by single point diamond turning an oxide glass having a Knoop Hardness HK less than 350.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: November 12, 2019
    Assignee: Novartis AG
    Inventors: Alice Weimin Liu, Gregory L. Herron
  • Patent number: 10468531
    Abstract: One object is to provide a semiconductor device including an oxide semiconductor, which has stable electric characteristics and high reliability. Another object is to manufacture a highly reliable semiconductor device in a high yield. In a top-gate staggered transistor including an oxide semiconductor film, as a first gate insulating film in contact with the oxide semiconductor film, a silicon oxide film is formed by a plasma CVD method with use of a deposition gas containing silicon fluoride and oxygen; and as a second gate insulating film stacked over the first gate insulating film, a silicon oxide film is formed by a plasma CVD method with use of a deposition gas containing silicon hydride and oxygen.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: November 5, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kunio Kimura, Mitsuhiro Ichijo, Toshiya Endo
  • Patent number: 10463581
    Abstract: To provide a sealer composition for root canal filling consisting of a liquid material containing a polymer (a) of an acid group-containing polymerizable monomer in which a portion or the entirety of the acidic group in a molecule forms a salt with an alkaline metal and water (b), wherein the pH of the liquid material is in the range from 3.5 to 5.5, and a powder material containing an acid reactive inorganic powder (c), wherein, a cured product of a kneaded material of the liquid material and the powder material comprises 3 to 20 part by weight of the polymer (a), 10 to 60 part by weight of the water (b), and 30 to 85 part by weight of the acid reactive inorganic powder (c).
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: November 5, 2019
    Assignee: SHOFU INC.
    Inventors: Shuji Sakamoto, Katsuya Kimoto, Toshiyuki Nakatsuka
  • Patent number: 10456333
    Abstract: Provided herein is a self-etching dental adhesive that exhibits excellent adhesiveness not only to dentin untreated by phosphoric acid etching, but to dentin treated by phosphoric acid etching. The present invention relates to a dental adhesive containing a (meth)acrylamide compound (a), an asymmetric acrylamide-methacrylic acid ester compound (b), and an acid group-containing (meth)acrylic polymerizable monomer (c). The (meth)acrylamide compound (a) is at least one selected from the group consisting of compounds represented by general formula (1), and compounds represented by general formula (2). The asymmetric acrylamide-methacrylic acid ester compound (b) is a compound represented by general formula (3). (In the formulae, the meanings of the symbols are omitted.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: October 29, 2019
    Assignee: KURARAY NORITAKE DENTAL INC.
    Inventors: Yamato Nojiri, Mitsuru Takei
  • Patent number: 10455847
    Abstract: The present invention relates to confectionary products containing a synergic combination of dibasic calcium phosphate and tribasic calcium phosphate. Confectionary products are useful in the treatment of dentinal sensitivity.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: October 29, 2019
    Assignee: Perfetti Van Melle S.p.A.
    Inventors: Roberto Colle, Andrea Sarrica
  • Patent number: 10441512
    Abstract: A dental curable composition includes a polymerizable monomer, inorganic particles (A), and inorganic particles (B), wherein the inorganic particles (A) have a volume-median particle size of more than or equal to 0.1 ?m and less than or equal to 0.9 ?m and are surface-treated with a compound expressed by a general formula (1), the inorganic particles (B) have an average primary particle size of more than or equal to 5 nm and less than or equal to 50 nm, where at least one of a group expressed by a general formula (A) and a group expressed by a general formula (B) is present at surfaces of the inorganic particles (B), and the ratio of the mass of the inorganic particles (B) to the total mass of the inorganic particles (A) and the inorganic particles (B) is more than or equal to 0.02 and less than or equal to 0.05.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: October 15, 2019
    Assignee: GC Corporation
    Inventors: Hiroaki Tanaka, Naofumi Matsumoto
  • Patent number: 10442725
    Abstract: The invention relates to glass ceramics based on the lithium metasilicate system (Li2O.SiO2(Li2SiO3)), which are mechanically processible in a simple manner in an intermediate stage of the crystallization and, after complete crystallization, represent a high-strength, highly translucent and chemically stable glass ceramic.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: October 15, 2019
    Assignees: FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V., VITA Zahnfabrik H. Rauter GmbH & Co. KG, DeguDent GmbH
    Inventors: Bernhard Durschang, Jörn Probst, Norbert Thiel, Michael Gödiker, Markus Vollmann, Udo Schusser
  • Patent number: 10426576
    Abstract: The invention is directed to a composition that safely removes a cured dental cement or resin from metal brackets, metal braces, and enamel surfaces of teeth. It contains eugenol, isoeugenol, methyl-eugenol or an isomer thereof. A method for removing orthodontic fixtures adhered with a dental cement or resin to the enamel surfaces of teeth from these surfaces by contacting the dental cement or resin with a composition containing eugenol.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: October 1, 2019
    Assignee: King Abdulaziz University
    Inventors: Ahmed Samir Ibrahim Bakry, Mona Aly Abbassy, Amal Linjawi, Ali Habib Hassan
  • Patent number: 10405953
    Abstract: Provided is a method for quickly producing a dental prosthesis with a good accuracy. The method for producing a dental prosthesis including: a melting step of melting a material including no less than 60.0 mass % and no more than 80.0 mass % of SiO2, no less than 10.0 mass % and no more than 20.0 mass % of Li2O, and no less than 5.1 mass % and no more than 10.0 mass % of Al2O3; a glass blank production step of cooling to solidify the molten material to obtain a glass blank; a lithium disilicate blank production step of heating the glass blank to obtain a lithium disilicate blank whose main crystalline phase is lithium disilicate; and a processing step of processing the lithium disilicate by machining.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: September 10, 2019
    Assignee: GC CORPORATION
    Inventors: Tomohiro Hoshino, Go Mashio, Tatsuya Fujimoto, Masatoshi Yoshinaga, Hayato Yokohara, Daisuke Ohta