By Named Composition Patents (Class 433/228.1)
  • Patent number: 10524887
    Abstract: The invention concerns a preform for a CAD/CAM machining apparatus having an upper face and a lower face a11d in which at least one of the cells is filled with a composite material to be machined by CAD/CAM, said material comprising long unidirectional fibers embedded in a cross-linked polymer matrix.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: January 7, 2020
    Assignee: SOCIETE DE RECHERCHES TECHNIQUES DENTAIRES—RTD
    Inventors: Pierre-Luc Reynaud, Manh-Quynh Chu, Mélissa Gonzalez, Cyril Rajon
  • Patent number: 10470980
    Abstract: The present invention provides polymerizable monomers represented by the following general formula (1) that are useful as dental materials. In the general formula (1), Ra is a divalent C6-9 aromatic hydrocarbon group or a divalent C6-9 optionally bridged cyclic hydrocarbon group, R1 and R2 are each a hydrogen atom or a C1-3 alkyl group, R3, R4, R5 and R6 are each a hydrogen atom or a hydrocarbon group, R7 and R8 are each a hydrogen atom or a methyl group, m and n are each independently 0 to 4, and Rb and Rc are each independently a C2-6 linear alkylene or C2-6 linear oxyalkylene group optionally substituted with a C1-3 alkyl group or a (meth)acryloyloxymethylene group in place of a hydrogen atom.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: November 12, 2019
    Assignees: MITSUI CHEMICALS, INC., SUN MEDICAL CO., LTD.
    Inventors: Kazuhiko Yoshinaga, Yoshimitsu Tanabe, Shinsuke Kinoshita, Takenori Mitamura, Hiroki Murai, Takeshi Yokoyama, Yoshihisa Kamimoto, Tatsuya Ori, Hirohisa Shimizu, Masami Arata, Masuji Tsuchikawa, Sayaka Miyamori, Yoshiaki Katsura
  • Patent number: 10449125
    Abstract: A process for producing a water-soluble, hydrolysis-stable, polymerizable polymer, comprising a) a step of copolymerizing a mixture comprising (i) a first copolymerizable monomer comprising at least one optionally protected carboxylic acid group and a first polymerizable organic moiety, and (ii) a second copolymerizable monomer comprising one or more optionally protected primary and/or secondary amino groups and a second polymerizable organic moiety, for obtaining an amino group containing copolymer; b) a step of coupling to the amino group containing copolymer a compound having a polymerizable moiety and a functional group reactive with an amino group of repeating units derived from the second copolymerizable monomer in the amino group containing copolymer obtained in the first step wherein the optionally protected amino group is deprotected, so that polymerizable pendant groups are linked to the backbone by hydrolysis-stable linking groups, and, optionally, a step of deprotecting the protected carboxylic ac
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: October 22, 2019
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Joachim E. Klee, Helmut Ritter, Maximilliam Maier, Julia Gansel, Andreas Facher, Oliver Elsner, Sven Pohle
  • Patent number: 10328103
    Abstract: A medical implant comprising in components from a tooth and stem cells harvested from at least one tooth. Pluripotent stem cells, other cells, and biologic constituents of the dental pulp may be harvested from the dental pulp of mammalian teeth, such as unerupted third molars in humans. After the stem cells are removed and isolated from the other teeth tissue, the hard tooth may be ground into a base material for the manufacture of a porous matrix into which the pluripotent stem cells, other cells, and biologic constituents of the dental pulp can be added. Additionally, soft tissue from the harvested tooth may be used as a carrier scaffold for soft tissue applications such as meniscal or cartilage repair.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 25, 2019
    Inventor: Ray C. Wasielewski
  • Patent number: 10299897
    Abstract: The dental plate liner includes: a paste (i) containing (A) a (meth)acrylic acid-based polymer, and a fluorine-containing (meth)acrylic acid-based polymerizable monomer in which (A) the (meth)acrylic acid-based polymer has a solubility of less than 20 mass %; and a paste (ii) containing a (meth)acrylic acid-based polymerizable monomer in which (A) the (meth)acrylic acid-based polymer has a solubility of 20 mass % or more, and a filler, in which at least one paste selected from the group consisting of the paste (i) and the paste (ii) contains a polymerization initiator, and in which the dental plate liner is used through mixing of the paste (i) and the paste (ii) immediately before use.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: May 28, 2019
    Assignee: TOKUYAMA DENTAL CORPORATION
    Inventors: Ayumu Gyakushi, Kouji Matsushige
  • Patent number: 10285914
    Abstract: To enable firm bonding to a member including a polyaryl ether ketone resin. A bonding method including: a bonding material applying step for applying, to the surface of a member including a polyaryl ether ketone resin, a bonding material including (A) a polymerizable monomer and (B) at least a portion of components for configuring a polymerization initiator, the content ratio of polymerizable monomers at least having two or more polymerizable functional groups in a (p2) molecule among all polymerizable monomers being 50% by mass or greater, and the content ratio of polymerizable monomers at least having one or more polymerizable functional groups and one or more functional groups capable of hydrogen bonding in a (p1h1) molecule being 5% by mass or greater; and a curing step for curing the bonding material. A bonding material and bonding kit using the bonding method.
    Type: Grant
    Filed: July 3, 2015
    Date of Patent: May 14, 2019
    Assignee: TOKUYAMA DENTAL CORPORATION
    Inventors: Tomonao Shimizu, Junichiro Yamagawa
  • Patent number: 10231906
    Abstract: A composition of matter includes one or more functionalized vinylbenzyl components of the formula wherein n is an integer equal to or greater than 1 covalently connected to one or more R functional components; the one or more R functional groups selected from a group including one or more hydroxyl methyl (—CHOH—) moieties and/or derivatives thereof, one or more ethoxy (—CH2—CH2—O—) moieties and/or derivatives thereof, and one or more benzene derivatives; and ether links that connect the functionalized vinylbenzyl components and the R functional components.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: March 19, 2019
    Assignee: ADA FOUNDATION
    Inventors: Jirun Sun, Rafael Bowen
  • Patent number: 10188587
    Abstract: Dental composite comprising (i) a polymerizable composition obtainable by reacting a mixture comprising: (a) x equivalents of one or more compounds of the following formula (I): wherein L? is an (l+1)-valent hydrocarbon group which may contain in its backbone 1 to 3 heteroatoms selected from oxygen atoms and sulfur atoms and which may be substituted by one or more hydroxyl groups or groups —COOL? wherein L? is a polymerizable moiety; l is an integer of from 1 to 3; (b) y equivalents of one or more compounds of the following formula (IIa), (IIb) and/or (IIc): wherein n is an integer of from 1 to 3, Y may be present or absent, and when present represents a carbonyl group; Y? independently may be present or absent, represents a carbonyl group; Rm which may be the same or different represent 1 to 3 substituents selected from halogen atoms, alkyl groups, and alkoxy groups, or wherein two Rm form together with the carbon atoms of the ring to which they are bonded an annelated aromatic ri
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: January 29, 2019
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Joachim E. Klee, Maximilian Maier, Christian Scheufler
  • Patent number: 10154945
    Abstract: According to one aspect of the present disclosure, there is provided a single paste type hydraulic dental filling composition. The single paste type hydraulic dental filling composition includes hydraulic cement, non-aqueous liquid having hygroscopic properties, and a radiopaque material.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: December 18, 2018
    Assignee: MARUCHI
    Inventors: Sung Wook Jang, Ho Nam Lim, Eui Seong Kim, Sei Jin Oh
  • Patent number: 10123947
    Abstract: The present invention provides a dental cement that exhibits excellent adhesiveness to dentin and has high mechanical strength. The present invention relates to a multi-part dental cement containing: an asymmetric acrylamide-methacrylic acid ester compound (a); an acid group-containing (meth)acrylic polymerizable monomer (b); a hydrophobic crosslinkable polymerizable monomer (c); a chemical polymerization initiator (d); and a filler (e). The asymmetric acrylamide-methacrylic acid ester compound (a) is represented by the following general formula (1): where X is an optionally substituted, linear or branched C1 to C6 aliphatic group or an optionally substituted aromatic group, the aliphatic group is optionally interrupted by at least one linking group selected from the group consisting of —O—, —S—, —CO—, —CO—O—, —O—CO—, —NR1—, —CO—NR1—, —NR1—CO—, —CO—O—NR1—, —O—CO—NR1—, and —NR1—CO—NR1—, and R1 is a hydrogen atom or an optionally substituted, linear or branched C1 to C6 aliphatic group.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: November 13, 2018
    Assignee: KURARAY NORITAKE DENTAL INC
    Inventors: Mitsuru Takei, Yamato Nojiri
  • Patent number: 10071028
    Abstract: The present invention provides a dental adhesive exhibiting excellent initial bond strength and bond durability to both enamel and dentin. The present invention relates to a dental adhesive containing: an asymmetric acrylamide-methacrylic acid ester compound (a); an acid group-containing (meth)acrylic polymerizable monomer (b); and a water-soluble polymerizable monomer (c). The asymmetric acrylamide-methacrylic acid ester compound (a) is represented by the following general formula (1): where X is an optionally substituted, linear or branched C1 to C6 aliphatic group or an optionally substituted aromatic group, the aliphatic group is optionally interrupted by at least one linking group selected from the group consisting of —O—, —S—, —CO—, —CO—O—, —O—CO—, —NR1—, —CO—NR1—, —NR1—CO—, —CO—O—NR1—, —O—CO—NR1—, and —NR1—CO—NR1—, and R1 is a hydrogen atom or an optionally substituted, linear or branched C1 to C6 aliphatic group.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: September 11, 2018
    Assignee: KURARAY NORITAKE DENTAL INC.
    Inventors: Yamato Nojiri, Mitsuru Takei
  • Patent number: 10023773
    Abstract: Adhesives and pressure-sensitive adhesives comprising polymerization products of acrylates, the adhesives being meltable and comprising polymerization products of esters of (meth)acrylic acid and (meth)acrylic acid, the polymerization product having a molecular weight Mn of greater than 50 000 g/mol and Mw of greater than 500 000 g/mol.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: July 17, 2018
    Assignee: TESA SE
    Inventors: Michael Siebert, Alexander Prenzel, Inga Auktun, Jennifer Beschmann
  • Patent number: 9931280
    Abstract: A dental composite composition is disclosed that includes a polymerizable resin, filler particles, and at least one polymerizable stable radical. A variety of polymerizable stable radicals may be employed, including those that have a 2,2,6,6-tetramethylpiperidinyl-1-oxyl moiety. Compositions as described herein exhibit excellent mechanical strength, hardness, and flexural modulus, while also significantly decreasing shrinkage stress caused by polymerization.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: April 3, 2018
    Assignee: Dentsply Sirona Inc.
    Inventors: Hui Lu, Xiaoming Jin, Joachim E. Klee, Bernard Koltisko
  • Patent number: 9931180
    Abstract: A dental powder/liquid material-containing preparation accommodation bag, which suppresses entrainment of air in mixing a powder material and a liquid material for dispensing, is provided. A powder material 8 is accommodated in a powder material accommodation chamber 3 of a bag body 2, while a liquid material 9 dissolving the powder material 8 and changing into a pasty form, in cooperation with the powder material 8 is accommodated in a liquid material accommodation chamber 4 partitioned from the powder material accommodation chamber 3 by a weakened section 7. The weakened section 7 is ruptured by applying a pressing force to the bag body 2. As a result, the powder material accommodation chamber 3 and the liquid material accommodation chamber 4 communicate, to feed the liquid material accommodated in the liquid material accommodation chamber 4 into the powder material accommodation chamber 3.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: April 3, 2018
    Assignee: Tokuyama Dental Corporation
    Inventors: Masanao Hashiguchi, Nobutoshi Yamaguchi, Kei Nakashima
  • Patent number: 9844495
    Abstract: The present invention provides a self-adhesive composite resin having excellent adhesiveness to tooth structures and excellent mechanical strength. The present invention relates to a self-adhesive dental composite resin containing: an asymmetric acrylamide-methacrylic acid ester compound (a); an acid group-containing (meth)acrylic polymerizable monomer (b); a hydrophobic crosslinkable polymerizable monomer (c); a photopolymerization initiator (d); and a filler (e).
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: December 19, 2017
    Assignee: KURARAY NORITAKE DENTAL INC.
    Inventors: Yasutaka Kudo, Yamato Nojiri, Mitsuru Takei
  • Patent number: 9833387
    Abstract: The present invention relates to a kit for indirect production of composite inlays, comprising a polymerizable material for production of a dental model, a polymerizable material for production of an inlay, a polymerizable material for luting of a crosslinked and non-sand-blasted, non-silanized, non-etched, non-primed and non-roughened composite inlay, the surfaces of which have been fully polymerized, in the cavity. Also disclosed is a polymerizable material for increasing the bond strength between the polymerizable material for luting of a crosslinked non-sand-blasted, non-silanized, non-etched, non-primed and non-roughened composite inlay, the surfaces of which have been fully polymerized, in the cavity, and the hard substance of the tooth, and an acid solution for surface etching of the hard substance of the tooth. The invention further relates to methods for producing a composite inlay.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: December 5, 2017
    Assignee: VOCO GmbH
    Inventors: Manfred Thomas Plaumann, Klaus-Peter Hoffmann, Tobias Bloemker, Alexander Willner
  • Patent number: 9833388
    Abstract: The present invention relates to a curable dental material, to a cured dental material producible therefrom by polymerization, to a method for producing the curable or cured dental material and to the use of the curable or cured dental material.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: December 5, 2017
    Assignee: VOCO GMBH
    Inventors: Alexander Willner, Manfred Thomas Plaumann
  • Patent number: 9728420
    Abstract: An organic film composition including a compound represented by the following general formula (1), wherein n1 and n2 each independently represent 0 or 1; “W” represents a single bond or any of structures represented by the following formula (2); R1 represents any of structures represented by the following general formula (3); m1 and m2 each independently represent an integer of 0 to 7, with the proviso that m1+m2 is 1 to 14. There can be provided an organic film composition for forming an organic film having dry etching resistance as well as advanced filling/planarizing characteristics.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: August 8, 2017
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Daisuke Kori, Kazumi Noda, Kazunori Maeda, Rie Kikuchi, Tsutomu Ogihara
  • Patent number: 9682018
    Abstract: The present invention relates to a dental polymer composition, in particular to a polymerizable resin composition combining comonomers capable of intermolecular hydrogen bonding with one or more hydrophobic comonomers. Polymers employing the present resin system exhibit high mechanical strength properties that are retained in the presence of water.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: June 20, 2017
    Inventors: Steven Sadowsky, Jeffrey W. Stansbury
  • Patent number: 9675528
    Abstract: A carrier composition for filling a tooth root canal, comprising a cross-linkable material.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: June 13, 2017
    Assignee: DENTSPLY SIRONA INC.
    Inventor: Todd Berger
  • Patent number: 9572753
    Abstract: A composition of matter includes one or more functionalized vinylbenzyl components of the formula covalently connected to one or more R functional components; the one or more R functional groups selected from a group including one or more hydroxyl methyl (—CHOH—) moieties and/or derivatives thereof, one or more ethoxy (—CH2—CH2—O—) moieties and/or derivatives thereof, and one or more benzene (C6H6) and/or derivatives thereof; and ether links that connect the functionalized vinylbenzyl components and the R functional components.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: February 21, 2017
    Assignee: ADA Foundation
    Inventors: Jirun Sun, Rafael Lee Bowen
  • Patent number: 9271901
    Abstract: The present invention provides a one-part dental adhesive composition that exhibits excellent adhesive property and bond durability to a tooth structure (particularly dentin) and has high stability to ambient light, in which respective components have been mixed uniformly. The present invention is a one-part dental adhesive composition including a polymerizable monomer (A) having an acidic group, a polymerizable monomer (B) having a fluorocarbon group represented by the general formula (1), water (C), and a polymerization initiator (D). A content of the polymerizable monomer (A) having an acidic group is 5.5 to 35 parts by weight in 100 parts by weight of the total amount of polymerizable monomers. (In the formula, R1 denotes a hydrogen atom or a methyl group, and Rf denotes a fluoroalkyl group having 1 to 20 carbon atoms.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: March 1, 2016
    Assignee: KURARAY NORITAKE DENTAL INC.
    Inventors: Ai Hinamoto, Naoki Nishigaki, Naofumi Murata
  • Patent number: 9248005
    Abstract: Dental obturator point having an obturation body containing a composite material comprising (a) a polymer and b) a particulate filler, whereby the obturation body has a radio opacity of at least 3 mm/mm Al, characterized in that the composite material has (i) a tensile strength of from 5 to 70 MPA1 (ii) a flexural strength of from 5 to 90 MPA, (iii) a flexural module of from 0.1 to 2.5 GPa, and which has (iv) a 300 rpm drilling coefficient at 37° C. in the range of from ?1 to 7.00.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: February 2, 2016
    Assignee: Dentsply DeTrey GmbH
    Inventors: Joachim E. Klee, Christoph Weber, Frank Pfefferkorn, Tim Hornung, Anja Glaner
  • Patent number: 9220663
    Abstract: There is provided a dental composition comprising at least one kind of filler and resin matrix, wherein the at least one kind of filler comprises a population of particles, wherein the population of particles has an average particle size from 110 to 500 ?m, the maximum particle size of the population of particles is less than 1.4 times the average particle size, and the D30 of particle size distribution of the population of particles is no less than 0.9 times the average particle size.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: December 29, 2015
    Assignee: KABUSHIKI KAISHA SHOFU
    Inventors: Yusei Kadobayashi, Masako Shigezawa, Keiji Takahashi
  • 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: 9012530
    Abstract: The invention is directed to an adhesive strip, particularly an adhesive strip or bandage for use in periodontal treatments. The biocompatible adhesive strip comprises a flexible barrier with a biocompatible adhesive for use in an oral environment, wherein the adhesive is in a non-tacky state when dry and becomes adherent upon contact with liquids.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: April 21, 2015
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Kelly Brook Emerton, Susan J. Drapeau, Daniel Andrew Shimko
  • Patent number: 8974586
    Abstract: One subject of the invention is a composition comprising from 5 to 65%, by weight relative to the total weight of the composition, of calcium silicate crystals; from 1 to 20%, by weight relative to the total weight of the composition, of calcium carbonate crystals; in addition from 0 to 50%, preferably from 1 to 40%, by weight relative to the total weight of the composition, of a compound of general formula mCaO.nSiO2.pH2O in which m and n, each independently, vary from 1 to 3 and p varies from 3 to 6; the ratio between the particle size d50 of the calcium silicate crystals and the particle size d50 of the calcium carbonate crystals being less than 10; another subject of the invention is a process for preparing said composition, and also the use of said composition in the dental field.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: March 10, 2015
    Assignee: Septodont ou Septodont SAS ou Specialties Septodont
    Inventors: Gilles Richard, Olivier Marie
  • Patent number: 8962708
    Abstract: The invention relates to a curable dental composition comprising a curable polyether group containing polymer as component (A), an initiator capable of initiating a curing reaction of component (A) as component (B) and a certain F-containing compound as component (C). The invention also relates to a method of production and use of the curable dental composition or a respective kit of parts for the preparation of or as impression material or for the preparation of crowns and bridges.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: February 24, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Andreas R. Maurer, Christoph Schulte, Peter U. Osswald, Joachim W. Zech, Hendrik Grupp, Peter Bissinger
  • Patent number: 8944820
    Abstract: A dental restorative composite and a method of curing the composite are disclosed in which the composite includes a polymerizable organic resin, a radiation activated initiator having an activation wavelength, an inert filler; and luminescent crystals, wherein the luminescent crystals emit radiation at a predetermined wavelength matching the initiator activation wavelength when the luminescent crystals are irradiated with radiation having a wavelength longer than the activation wavelength, the luminescent crystals being up-converting particles that result in those particles emitting radiation at a wavelength that initiates curing.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: February 3, 2015
    Inventors: Calvin Ostler, Hui Lu
  • Patent number: 8946318
    Abstract: The present invention discloses a kit of material for dentin restoration including a combination of a plurality of kinds of curable pastes each having a different hue, wherein each of the curable pastes exhibits L* of 55 to 75 and a fluctuation range of L* of 3 or less in a CIELab color system when the color of a cured body with a thickness of 3.0 mm obtained by curing the pastes is measured against a black background, and a method for producing the kit of material for dentin restoration.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: February 3, 2015
    Assignee: Tokuyama Dental Corporation
    Inventors: Hironobu Akizumi, Chika Toriyabe
  • Publication number: 20150011452
    Abstract: Described are compositions and methods for the removal of zinc-oxide eugenol-based temporary cements or root canal filling materials from a variety of surfaces including surfaces inside the oral cavity, such as teeth, as well as surfaces of objects located outside of the oral cavity, such as instruments and prostheses. In certain compositions, the resin-dentin bond between permanent cements and collagen-containing surfaces can be increased. The compositions are non-toxic, can be used inside the oral cavity, and do not require special disposal procedures.
    Type: Application
    Filed: June 10, 2014
    Publication date: January 8, 2015
    Inventors: Jason Guzman, Jeffrey Wan
  • Publication number: 20150005392
    Abstract: Compositions of, methods of making, and methods of using alkaline earth phosphate bone cements are disclosed. A bone cement composition includes a powder comprising a basic source of calcium, magnesium, or strontium, a setting solution comprising H3PO4 and a buffer, and a biocompatible polymer that is incorporated into the setting solution. The powder is mixed with the setting solution to form a bone cement paste that either (a) sets into a hardened mass, or (b) is irradiated with electromagnetic radiation to form dry powders, the dry powders then being mixed with a second setting solution to form a radiation-assisted bone cement paste that sets into a hardened mass.
    Type: Application
    Filed: January 31, 2013
    Publication date: January 1, 2015
    Applicant: THE UNIVERSITY OF TOLEDO
    Inventors: Sarit B. Bhaduri, Huan Zhou, Anand K. Agarwal, Vijay K. Goel
  • Patent number: 8921450
    Abstract: The invention relates to a radically polymerizable monomer of formula (I) wherein W1 and W2 in each case independently represent H or X—R—Y—PG, wherein at least one of W1 and W2 represents X—R—Y—PG, X in each case independently is missing or represents an ether, ester, amide, urethane or urea group, Y in each case independently is missing or represents an ether, ester, amide, urethane or urea group, R in each case independently is missing or represents a C1-C16 alkylene radical which can be interrupted by one or more O atoms, wherein R can be missing only if X and/or Y is simultaneously also missing, and PG in each case independently represents a cyclic, ring-opening polymerizable group, a, b, c and d independently of each other can take the values 3 to 10.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: December 30, 2014
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, Jörg Angermann, Urs Karl Fischer, Volker Rheinberger
  • Patent number: 8916624
    Abstract: Improvedly storage stable dental compositions useful for the preparation of dental prostheses and for dental restoration containing a uniquely pretreated dental filler material.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: December 23, 2014
    Assignee: Bluestar Silicones France SAS
    Inventors: Jean-Marc Frances, Sophie Schneider
  • 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: 8883877
    Abstract: The present invention relates to a dental material comprising, relative to the total mass of the material: (a) 1 to 95 wt.-% of at least one polymerizable N,O-functionalized acrylic acid hydroxamide, (b) 0 to 70 wt.-% diluent monomer, (c) 0 to 70 wt.-%, cross-linker monomer, (d) 0.1 to 5.0 wt.-% polymerization initiator (e) 0 to 80 wt.-% filler, (f) 0 to 70 wt.-% solvent, and (g) 0 to 70 wt.-% adhesive monomer.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: November 11, 2014
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, Iris Lamparth, Urs Karl Fischer, Frank Zeuner, Armin de Meijere, Volker M. Rheinberger
  • Publication number: 20140329205
    Abstract: The invention relates to a one-component self-adhesive composition for dental use comprising radically polymerizable component(s) with an acidic moiety as component A, radically polymerizable component(s) without an acidic moiety as component (B), an oxidizing agent comprising persulfate(s) as component (C), transition metal component(s) as component (D), photoinitiator system(s) as component (E), optionally non acid-reactive filler(s) as component (F), and optionally additive(s) as component (G).
    Type: Application
    Filed: November 30, 2012
    Publication date: November 6, 2014
    Inventors: Reinhold Hecht, Andrea Stippschild, Vitore Hasanaj, Gioacchino Raia, Manfred Ludsteck, Rainer Guggenberger
  • Patent number: 8871235
    Abstract: The present invention is directed to implantable compositions comprising substantially spherical bioactive glass particles.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: October 28, 2014
    Assignee: Synergy Biomedical LLC
    Inventor: Mark D. Borden
  • 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: 8853321
    Abstract: One-component heat-curable sealant composition for the protection of exposed dental surfaces, comprising (a) a polymerizable monomer and/or oligomer which has at least two polymerizable double bonds per molecule, and (b) an initiator system comprising benzoylperoxide in an amount of at least 2 wt.-% based on the total composition.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: October 7, 2014
    Assignee: DENTSPLY International Inc.
    Inventors: Joachim E. Klee, Andreas Facher, Chritoph Weber, Rolf Mulhaupt, Martin Schmider
  • Publication number: 20140249016
    Abstract: The invention relates to glass-ceramics based on the lithium silicate system which can be mechanically machined easily in an intermediate step of crystallisation and, after complete crystallisation, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.
    Type: Application
    Filed: May 9, 2014
    Publication date: September 4, 2014
    Applicants: 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, Joachim Bibus, Markus Vollmann, Udo Schusser
  • Publication number: 20140220512
    Abstract: Hardenable compositions are described comprising at least one multifunctional ethylenically unsaturated isocyanurate monomer and at least one multifunctional ethylenically unsaturated tricyclodecane monomer. In favored embodiments, the compositions further comprise filler and are suitable dental restorations.
    Type: Application
    Filed: February 6, 2012
    Publication date: August 7, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Ahmed S. Abuelyaman, Adrian S. Eckert, Sumita B. Mitra, Timothy D. Dunbar, Bradley D. Craig, Chuntao Cao
  • Patent number: 8785518
    Abstract: The present application relates to a polymerizable dental adhesive system formulated for effective and durable bonding of zirconia based materials and restorations to dental resins and dental surfaces. According to one embodiment, a polymerizable dental adhesive system comprises a first acidic monomer comprising an ethylenically unsaturated polymerizable group or moiety of the general formula CH2?CX—C(O)— wherein X is hydrogen, methyl or a lower alkyl group, and the first polymerizable monomer further comprises a phosphoric or phosphonic acid group of general formula —OP(O)(OH)2, —OP(O)(OH), —C—P(O)(OH)2 and —C—P(O)(OH), and a second polymerizable acidic monomer comprises an ethylenically unsaturated polymerizable group or moiety of the general formula CH2?CX—C(O)— wherein X is hydrogen, methyl or a lower alkyl group, and wherein the second polymerizable acidic monomer further comprises a carboxylic acid group of the general formula —C(O)OH.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: July 22, 2014
    Inventors: Byoung I. Suh, Liang Chen
  • 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: 8778377
    Abstract: The present invention relates to ceramic precursor material exhibiting injectability and properties that make the material suitable as a carrier material used in drug delivery. According to the invention this is accomplished by selecting a microstructure based on pre-reacted phases and after injection established phases, which contain anti-infective and/or anti-inflammatory drugs. The present invention also relates to a cured ceramic material and a method of manufacturing said cured material. The precursor and the cured ceramic material according to the present invention can suitably be used for filling orthopaedic cavities and other bone voids.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: July 15, 2014
    Assignee: Doxa AB
    Inventors: Leif Hermansson, Håkan Engqvist
  • Publication number: 20140193777
    Abstract: The present application provides dental fillers, and methods of making and using dental fillers that include a treated surface that includes phosphorus and a divalent cation. Dental compositions including such dental fillers can be useful for delivering ions to the oral environment.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 10, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Richard P. Rusin, Sumita B. Mitra, Kevin M. Cummings
  • 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: 20140162217
    Abstract: A substance that sets in a relatively short time for use in general dentistry and in endodontics to replace natural tooth material, the substance comprising untreated mineral trioxide aggregate and milled mineral trioxide aggregate, or comprising untreated mineral trioxide aggregate, milled mineral trioxide aggregate and water. A method of making a substance that sets in a relatively short time for use in general dentistry and in endodontics to replace natural tooth material, the method comprising milling by high shear and impact impingement of particles using high pressure homogenization.
    Type: Application
    Filed: February 14, 2014
    Publication date: June 12, 2014
    Applicant: Loma Linda University
    Inventors: Mahmoud Torabinejad, Homayoun Moaddel
  • Publication number: 20140154646
    Abstract: The invention provides a light-curable dental material comprising a polymerizable compound having at least one ethylenically unsaturated bond and a hexaaryl bisimidazole as a photopolymerization initiator.
    Type: Application
    Filed: February 11, 2014
    Publication date: June 5, 2014
    Applicant: DENTSPLY International Inc.
    Inventors: Gordon BLACKWELL, Christoph WEBER