Endodontic Patents (Class 433/224)
  • Patent number: 11964031
    Abstract: A root canal filling composition for placement in a tooth root canal, a kit for providing the required materials, and a method for applying the materials. The root canal filling composition comprises a glass-fibre post and a dentine-adhesive filling material.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: April 23, 2024
    Inventor: Markus Lietzau
  • Patent number: 11641798
    Abstract: An electric working machine includes an attachment portion, a motor, and a controller. Multiple types of tip tools are alternatively attached to the attachment portion. The motor drives the tip tool attached to the attachment portion. The controller has first start control and second start control. The controller is configured to execute the first start control so as to determine the type of the tip tool when not having tool type information, and configured to execute the second start control when having the tool type information.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: May 9, 2023
    Assignee: MAKITA CORPORATION
    Inventor: Yoshitaka Ichikawa
  • Patent number: 11533841
    Abstract: One aspect of the present disclosure provides an electric working machine. The electric working machine includes a driver, a motor, and a control circuit. Attached to the driver is a selected tool. The motor drives the selected tool attached to the driver. The control circuit sets a target rotational frequency based on the selected tool. The control circuit controls the motor to rotate at the target rotational frequency.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: December 27, 2022
    Assignee: MAKITA CORPORATION
    Inventors: Tatsuya Hata, Hiroshi Nojiri, Yoshitaka Ichikawa
  • Patent number: 11484476
    Abstract: A gutta-percha-silver composite with determined weight percentage and particle size, is provided. The composite exhibits electro-conductivity greater than the standard gutta-percha composites. The new material simplifies root canal treatments, shortens the times both for clinician and patients, and reduces the exposure to patients from X-rays. The material is not only electro-conductive; it is anti-bacterial, which improves the outcomes of the procedures. Also, it has improved thermal conductivity, and mechanical properties.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: November 1, 2022
    Assignee: THE UNIVERSITY OF HONG KONG
    Inventors: Fabio Savoldi, Jukka Pekka Matinlinna, Kit Hon James Tsoi, Corrado Paganelli, Luca Visconti, Giovanni Rasia Dal Polo
  • Patent number: 11364320
    Abstract: A radiopaque composition with low viscosity and increased photopolymerizability for application or filling of hollow structures is disclosed. Moreover, a method to apply and monitor the application and/or the photopolymerization of the composition are presented.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: June 21, 2022
    Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)
    Inventor: Andreas Schmocker
  • Patent number: 11179154
    Abstract: An instrument includes a body, a shaft extending from the body, and an end effector in communication with the shaft. The end effector defines a longitudinal axis. The end effector includes first and second opposing jaws, a staple cartridge, and a placement tip. At least one of the first and second jaws is movable relative to the other of the first and second jaws between an open configuration and a closed configuration. The staple cartridge is coupled with the second jaw. The placement tip extends from a distal end of the first jaw or a distal end of the second jaw. The placement tip extends along a curvilinear path and terminates at a tip end. Successive perimeters of the placement tip taken perpendicular to the curvilinear path decrease moving toward the tip end. The tip end extends at an angle relative to the longitudinal axis of the end effector.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: November 23, 2021
    Assignee: Cilag GmbH International
    Inventors: Jason L. Harris, Gregory J. Bakos, Frederick E. Shelton, IV
  • Patent number: 11179297
    Abstract: Metal-containing methacrylates incorporated into polymeric materials with antimicrobial capacity for biomedical applications, and more particularly for dental purposes, are provided. The incorporation of metal-containing methacrylates such as calcium methacrylate, tin methacrylate, copper methacrylate, silver methacrylate, in combination or alone, for potentializing antimicrobial effect of cements, in particular, to biomaterial compositions including metal containing methacrylates, such as calcium, tin, copper, silver, nickel, titanium and iron methacrylates, in the formulation of biomaterials for applications in human health provides advantages, particularly in dentistry, and allows for expressive antimicrobial activity to dental compositions, so as to be useful in dental prosthesis, operative dentistry, orthodontics, pediatric dentistry, implantodontics, and endodontics.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: November 23, 2021
    Assignee: UNIVERSIDADE FEDERAL DE PELOTAS
    Inventors: Giana da Silveira Lima, Rafael Guerra Lund, Evandro Piva, Adriana Fernandes da Silva, Wellington Luiz de Oliveira da Rosa, Raissa Coi de Araújo, Andressa Goicochea Moreira, Julia Adornes Gallas, Tharsis Christini de Almeida Rossato, Juliana Silva Ribeiro, Alexandra Rubin Cocco, Sonia Luque Peralta
  • Patent number: 11173019
    Abstract: Various embodiments for cleaning carious regions of a tooth are disclosed herein. For example, a dental apparatus can include a fluid platform having a chamber sized and shaped to retain fluid. The chamber can be configured to be coupled to the tooth over the carious region. A pressure wave generator having a distal end may be configured to be positioned in the chamber. The pressure wave generator may be configured to generate pressure waves in the retained fluid sufficient to clean the carious region.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 16, 2021
    Assignee: SONENDO, INC.
    Inventors: Bjarne Bergheim, Mehrzad Khakpour
  • Patent number: 11141353
    Abstract: A dental composition comprising a pre-reacted particulate mineral trioxide aggregate (MTA) dispersed in a polymer matrix 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 4, 2018
    Date of Patent: October 12, 2021
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Todd Patrick Berger, Adam Zachary Baratz, Sheridan Lynn Rose
  • Patent number: 11033357
    Abstract: Methods for atraumatic tooth extraction are provided. The methods include inserting an instrument into a pulp canal of a tooth, wherein the instrument comprises a body electrically connected to a heat providing source; and a tip arranged at one end of the body configured for insertion into a pulp canal; heating the tip to provide a temperature sufficient to degenerate periodontal ligament; withdrawing the instrument from the pulp canal; and extracting the tooth.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: June 15, 2021
    Assignee: King Abdulaziz University
    Inventors: Yasser AlKhiary, Lulwa AlTurki, Nuha AlRayes
  • Patent number: 10835355
    Abstract: Apparatus and methods for endodontic treatment of teeth provide effective cleaning of organic material (such as pulp and diseased tissue) from the root canal system. In an embodiment, a compressor system generates high pressure liquid (e.g., water) that flows through an orifice to produce a high-velocity collimated jet of liquid. The high-velocity jet is directed toward a surface of a tooth, for example, an exposed dentinal surface, and impingement of the jet onto the surface generates an acoustic wave that propagates throughout the tooth. The acoustic wave effectively detaches organic material from dentinal surfaces and tubules. The detached organic material is flushed from the root canal system by the liquid jet and/or by additional irrigation.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: November 17, 2020
    Assignee: SONENDO, INC.
    Inventors: Morteza Gharib, Joshua Adams, Erik Hars, Bjarne Bergheim, Karl Stocks, Lance Doherty
  • Patent number: 10806544
    Abstract: In some embodiments, a method for removing a foreign object from a root canal of a tooth is disclosed. The method can include positioning a fluid generator to be in fluid communication with the root canal of the tooth. Fluid can be supplied to the root canal. The method can include generating fluid motion and/or pressure waves in the fluid in the root canal with the fluid motion generator. The foreign object can be removed from the root canal with the pressure waves and/or the fluid motion.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: October 20, 2020
    Assignee: SONENDO, INC.
    Inventors: Mehrzad Khakpour, Bjarne Bergheim
  • Patent number: 10696590
    Abstract: An activator composition for a non-OPC hydraulically-active material comprises CaO or lime and a polycarboxylate-ether-based (PCE) superplasticiser, and is mixable with a hydraulically active material comprising ground granulated blast furnace slag (GGBS) and/or pulverized fuel ash (PFA) to form a cementitious binder. The cementitious binder does not comprise any Portland cement and is, therefore, more environmentally friendly.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: June 30, 2020
    Assignee: DB GROUP (HOLDINGS) LTD
    Inventors: David Martin James Ball, Martin Liska, Peter Hewlett
  • Patent number: 10617498
    Abstract: Apparatus and methods for endodontic treatment of teeth provide effective cleaning of organic material (such as pulp and diseased tissue) from the root canal system. In an embodiment, a compressor system generates high pressure liquid (e.g., water) that flows through an orifice to produce a high-velocity collimated jet of liquid. The high-velocity jet is directed toward a surface of a tooth, for example, an exposed dentinal surface, and impingement of the jet onto the surface generates an acoustic wave that propagates throughout the tooth. The acoustic wave effectively detaches organic material from dentinal surfaces and tubules. The detached organic material is flushed from the root canal system by the liquid jet and/or by additional irrigation.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: April 14, 2020
    Assignee: SONENDO, INC.
    Inventors: Morteza Gharib, Joshua Adams, Erik Hars, Bjarne Bergheim, Karl Stocks, Lance Doherty
  • Patent number: 10596078
    Abstract: Dental composition comprising (a) at least two di- or polyepoxides having 2 to 5 epoxide groups and having a molecular weight of from 200 to 700 Da, or a macromonomeric reaction product obtainable by reacting the diepoxide with a dicarboxylic acid in a molar ratio [diepoxide]/[dicarboxylic acid] of at least 2; (b) one or more primary monoamines and/or disecondary diamines; (c) optionally one or more aliphatic polyamines; (d) a particulate filler, wherein the molar ratio of epoxide groups in component (a) to the N—H bonds in component (b) and (c) [epoxide(a)]/[N—H(b),(c)] is in the range of from 0.9 to 1.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: March 24, 2020
    Assignee: DENTSPLY SIRONA Inc.
    Inventor: Joachim Klee
  • Patent number: 10478383
    Abstract: A root canal filling cone made of a material having a composition that can maintain its physical and chemical characteristics and shelf life after sterilization, and a process of sterilizing the point/cone prior to shipment to a user. In one aspect, the cone is made of a composition that includes a plurality of base polymers of substantially equal amounts, and nanoparticles, which can withstand sterilization by gamma irradiation. In one embodiment, the compound includes Gutta Percha based polymers. In another aspect, the Gutta Percha based cone is packaged and sterilized by irradiation prior to shipment to a user. In one embodiment of the present invention, the irradiation is gamma irradiation.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: November 19, 2019
    Assignee: DENTSPLY SIRONA Inc.
    Inventor: Nathan Y. Li
  • Patent number: 10314671
    Abstract: An apparatus for endodontic treatment, used for cleaning and/or abrading a root canal using at least one angled fluid jet. In some embodiments, the apparatus comprises a nozzle that is shaped to create one or more angled fluid jets, for example including an internal cone and an external cone. In some embodiments, the flow of fluid advances along a root canal wall for removal of soft tissue such as nerve tissue, pulp tissue, and/or debris.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: June 11, 2019
    Assignee: Fluidfile Ltd.
    Inventors: Amnon Lifshitz, Yehuda Darshan
  • Patent number: 10299885
    Abstract: A method for creating a tooth bud ablation system including a custom surgical stent and an ablation probe tip for use in a tooth bud ablation procedure that results in the agenesis of a tooth in a patient.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: May 28, 2019
    Assignee: TRIAGENICS, INC.
    Inventor: Leigh E. Colby
  • Patent number: 10278901
    Abstract: Dental composition comprising (a) at least two di- or polyepoxides having 2 to 5 epoxide groups and having a molecular weight of from 200 to 700 Da, or a macromonomeric reaction product obtainable by reacting the diepoxide with a dicarboxylic acid in a molar ratio [diepoxide]/[dicarboxylic acid] of at least 2; (b) one or more primary monoamines and/or disecondary diamines; (c) optionally one or more aliphatic polyamines; (d) a particulate filler, wherein the molar ratio of epoxide groups in component (a) to the N—H bonds in component (b) and (c) [epoxide(a)]/[N—H(b),(c)] is in the range of from 0.9 to 1.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: May 7, 2019
    Assignee: DENTSPLY SIRONA INC
    Inventor: Joachim Klee
  • Patent number: 10136963
    Abstract: A bactericidal insert for introduction into a canal in a tooth during a root canal procedure is provided, along with a method of producing the insert and a method of using the insert in a root canal procedure. The insert is in the form of a carrier having a plurality of pores or interstices. The carrier had been impregnated with a liquid photosensitive dye so that the dye entered the pores or interstices and then the carrier with the liquid photosensitive dye forms a dye-impregnated carrier. The dye-impregnated carrier is configured and adapted for insertion within the canal of the tooth. The carrier, if dried, is adapted to receive a wetting agent to dissolve the dye therein to produce a liquefied dye, which is activatable to produce singlet oxygen within the canal when it is irradiated by light from outside of the tooth.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: November 27, 2018
    Inventors: Richard Titlebaum, Som Tyagi
  • Patent number: 10123851
    Abstract: A device for irrigating a canal during a root canal treatment or retreatment provides a fluid reservoir in fluid communication with at least one pump for delivering an irrigant under pressure. A hand-held wand has a proximal end for receiving the irrigant under pressure, permitted to flow through the wand head by an actuator. An irrigant delivery needle which affixed to the working end of the wand delivers irrigant through at least one irrigant dispersion orifice at a selected delivery angle and pressure. Aspirating means and/or shielding may optionally be provided.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: November 13, 2018
    Inventors: Ghassan Yared, Gustavo De-Deus
  • Patent number: 10052173
    Abstract: An endodontic file, or a series of endodontic files, and an endodontic obturator or series of obturators, and methods of manufacturing same. Regarding the endodontic files, they may include a file body extending from a tip region to a shank region, at least one helical flute extending from the tip region towards the shank region. Each helical flute may have an up-sharp cutting edge without a land. For one such set of endodontic files, there is included at least a first and a second file, each one of the files having a tip and a shank, the first file having a tip size that is substantially the same as a tip size of the second file, wherein the first file has a different taper configuration relative to the taper configuration of the second file.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: August 21, 2018
    Assignee: GUIDANCE ENDODONTICS, LLC
    Inventor: Charles J. Goodis
  • Patent number: 10039615
    Abstract: A method for planning a root canal treatment of a tooth which includes a cavity of a patient. The method includes measuring a surface of the cavity with an optical three-dimensional method to generate three-dimensional measurement data of the cavity. A 3D-model of a guide template is planned based on the generated three-dimensional measurement data. The 3-D model is designed in its dimensions as a counterpart to the cavity. Three-dimensional volume data of the tooth is displayed. A position and an orientation of a root canal of the tooth is determined based on the three-dimensional volume data of the tooth. A guide opening for a tool is planned to expose the root canal. The guide opening is arranged within the guide template so that the guide opening points at an entry point of the root canal and in an entry direction of the root canal.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: August 7, 2018
    Assignee: SICAT GMBH & CO. KG
    Inventors: Joachim Hey, Jochen Kusch, Andreas Zollorsch
  • Patent number: 10039625
    Abstract: Apparatus and methods for endodontic treatment of teeth provide effective cleaning of organic material (such as pulp and diseased tissue) from the root canal system. In an embodiment, a compressor system generates high pressure liquid (e.g., water) that flows through an orifice to produce a high-velocity collimated jet of liquid. The high-velocity jet is directed toward a surface of a tooth, for example, an exposed dentinal surface, and impingement of the jet onto the surface generates an acoustic wave that propagates throughout the tooth. The acoustic wave effectively detaches organic material from dentinal surfaces and tubules. The detached organic material is flushed from the root canal system by the liquid jet and/or by additional irrigation.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: August 7, 2018
    Assignee: SONENDO, Inc.
    Inventors: Morteza Gharib, Joshua Adams, Erik Hars, Bjarne Bergheim, Karl Stocks, Lance Doherty
  • Patent number: 10016263
    Abstract: Apparatus and methods for endodontic treatment of teeth provide effective cleaning of organic material (such as pulp and diseased tissue) from the root canal system. In an embodiment, a compressor system generates high pressure liquid (e.g., water) that flows through an orifice to produce a high-velocity collimated jet of liquid. The high-velocity jet is directed toward a surface of a tooth, for example, an exposed dentinal surface, and impingement of the jet onto the surface generates an acoustic wave that propagates throughout the tooth. The acoustic wave effectively detaches organic material from dentinal surfaces and tubules. The detached organic material is flushed from the root canal system by the liquid jet and/or by additional irrigation.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: July 10, 2018
    Assignee: SONENDO, INC.
    Inventors: Morteza Gharib, Joshua Adams, Erik Hars, Bjarne Bergheim, Karl Stocks, Lance Doherty
  • Patent number: 9962237
    Abstract: A root canal filling material for a tooth extraction or tooth non-extraction process can be used clinically because of its easy availability and can efficiently enhance dental tissue regeneration; a method for regenerating dental tissue using the filling material is also provided. A root canal filling material 200 including mesenchymal stem cells 220 excluding dental pulp stem cells, which are inserted into the apical side of a root canal subjected to pulp extirpation or to root canal enlargement and cleaning of an infected root canal and including an extracellular matrix 210 is provided, and a method for regenerating dental tissue, through a tooth extracting or tooth non-extracting process, including a step of injecting the root canal filling material into the apical side of a root canal of a non-extracted tooth subjected to pulp extirpation or to root canal enlargement and cleaning of an infected root canal is provided.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: May 8, 2018
    Assignee: National Center for Geriatrics and Gerontology
    Inventors: Misako Nakashima, Koichiro Iohara
  • Patent number: 9839493
    Abstract: A structured reinforcement for a coronal-radicular dental reconstitution comprising: a plurality of pins having diameters ranging from 0.1 mm to 0.5 mm, an assembly part configured to group the plurality of pins so as to form a bundle of pins, said assembly part partially covering the length of the pins so that each pin presents a free end mobile in flexion with respect to the other pins of the bundle of pins.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: December 12, 2017
    Inventors: Bernard Maneuf, André Collombin, Bruno Clunet-Coste
  • Patent number: 9827070
    Abstract: An application tip for dispensing a dental material has a tubular dispensing end made of a plastic material. The dispensing end being formed of a circumferential wall having a thickness T1 and which forms a dispensing opening of a diameter Di1 and having a diameter-to-thickness-ratio Di1:T1 at the opening which is 13 or greater. The wall thickness increases in a direction away from the opening. The application tip preferably facilitates appropriately depositing the dental material.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: November 28, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Marc Peuker, Andreas J. Boehm
  • Patent number: 9526594
    Abstract: A dental post consisting of fiber-reinforced material with substantially uniformly directed fibers and mountable in a tooth root canal for fixing a dental prosthetic structure on a tooth stump and a method for its fabrication. For improving the light conduction properties within the post, at least a fraction of said fibers are adapted for light conduction within said post and said post comprises a tapered portion extending towards its second end, wherein at least a fraction of said light conducting fibers extend from the first end of said post to the circumferential surface of said tapered portion. An advantageous fabrication method of the dental post comprises forming of a composite structure of uniform cross-section with substantially uniformly directed light conducting fibers in a pultrusion process and shaping of at least a portion of the circumferential surface of said composite structure in order to provide a tapered portion extending towards the second end of said composite structure.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: December 27, 2016
    Inventors: Harald Nordin, Peter Nordin
  • Patent number: 9517117
    Abstract: A fiber-reinforced composite post having an inner core section or rod fabricated of fibers impregnated in a resin matrix and an outer sheath of fibers arranged in the form of a mesh. The outer sheath comprises an interior and an exterior surface, the exterior surface is dry and unembedded fibers, and the outer sheath is attached to the inner core. In an embodiment of the dental post, the interior surface of the mesh is embedded in the resin matrix of the inner core with the inner core fibers.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: December 13, 2016
    Assignee: Pentron Clinical Technologies, LLC
    Inventor: Ajit Karmaker
  • Patent number: 9492360
    Abstract: An obturator in which a filling material includes a biodegradable thermoplastic polymer. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: November 15, 2016
    Assignee: PENTRON CLINICAL TECHNOLOGIES, LLC
    Inventors: Weitao Jia, Bruce Alpert
  • Patent number: 9486393
    Abstract: Example embodiments of the present invention include compositions, materials, and methods that provide a single component tooth root sealer. The single component tooth root sealer can be designed to moisture cure at temperatures found within the human mouth. Examples of the single component tooth root sealer can include silicone compositions, such as condensation silicones of the alkoxy, acetoxy, and oxime type. Further examples of the single component tooth root sealer can include UV/visible light-initiators, antimicrobial agents, and radio-opaque compounds.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: November 8, 2016
    Assignee: CAO Group, Inc.
    Inventor: Steven D Jensen
  • Patent number: 9434647
    Abstract: Stabilized aqueous suspensions include aluminous cement and/or calcium sulfoaluminous cement and binding compositions including the aqueous suspension in combination with organic binders, which are stable at room temperature and at high temperature as well as methods for preparing the same are described.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: September 6, 2016
    Assignee: KERNEOS
    Inventors: Pascal Taquet, Pierre-Antoine Andreani, Veronique Watt, Emilie Reveyrand
  • Patent number: 9192626
    Abstract: Microbiologically effective silver hydrosol is used to reduce the local level of microorganisms at the site of a dental procedure and to prevent or inhibit their growth during the healing that follows the procedure. Any gingival lesions created by a dental procedure are treated with silver hydrosol in an aqueous gel. Following the procedure the patient's mouth is periodically rinsed several times a day with a solution of silver hydrosol or, more preferably, with a combination of silver hydrosol and hydrogen peroxide. These steps result in a significant reduction in post operative pain and swelling. Overall healing is accelerated by this treatment.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: November 24, 2015
    Assignee: AMERICAN SILVER, LLC
    Inventors: Andrew J. M. Willoughby, William D. Moeller
  • Patent number: 9155595
    Abstract: The present invention provides a selective coating of an endodontic file, in which the distal end of the file is uncoated or alternatively leaving the outermost part of the blades of the distal end portion uncoated. The distribution of the nanoparticles is thus non uniform along the surface of the file leaving only a part of the file coated. In the present invention, the distal end of the device being subjected to the highest torque is either uncoated at all, or has a coated core and uncoated blades.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: October 13, 2015
    Assignees: YEDA RESEARCH AND DEVELOPMENT CO. LTD., HADASIT MEDICAL RESEARCH SERVICES & DEVELOPMENT LTD.
    Inventors: Reshef Tenne, Meir Redlich, Adi Ram-Adini, Yishay Feldman, Gili Naveh, Joshua Moshonov, Boaz Shay
  • Patent number: 9101693
    Abstract: This invention relates to cell-independent processes which mimic cellular bioremodelling and produce organized biomaterials which have mechanical properties and viable cell densities suitable for use as functional tissue implants. The biomaterials are produced by providing a gel comprising a matrix of scaffold fibers of and an interstitial fluid; and plastically compacting the gel to produce the biomaterial. The biomaterials may comprise 3D structures such as layering, alignment and meso-scale zonal heterogeneities of cells and matrix which mimic native tissue structure. Biomaterials with biomimetic structure as described herein may be useful in a range of therapeutic applications.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: August 11, 2015
    Assignee: UCL BUSINESS PLC
    Inventors: Robert Brown, Showan Nazhat, Vivek Mudera, Mike Wiseman
  • Publication number: 20150140516
    Abstract: A single intra-canal substance composition for tissue dissolution, disinfection, tissue degradation, tissue removal and disinfection is provided. The composition includes calcium hydroxide, sodium hydroxide, potassium thioglycolate or calcium thioglycolate, to form an effective single intra-canal substance capable of degrading a cell by disrupting its disulfide bonds. Further, the composition may incorporate mineral oil, urea, cetearyl alcohol, D&C yellow No. 8, chromium hydroxide, theobroma cocoa seed butter, iron oxides, fragrances, water fragrance, lanolin, and ceteareth-20 to enhance its functioning. Furthermore, the composition that is bactericidal against Enterococcus faecalis, Streptococcus mutans and Candida albicans, used in multiple applications in dentistry and medicine. Furthermore, the composition is a single intra-canal irrigant that eradicates microorganisms as it facilitates the chemo-mechanical debridement of the root canal system.
    Type: Application
    Filed: January 8, 2015
    Publication date: May 21, 2015
    Inventor: Amy Dukoff
  • Publication number: 20150132712
    Abstract: Apparatus and methods for endodontic treatment of teeth provide effective cleaning of organic material (such as pulp and diseased tissue) from the root canal system. In an embodiment, a compressor system generates high pressure liquid (e.g., water) that flows through an orifice to produce a high-velocity collimated jet of liquid. The high-velocity jet is directed toward a surface of a tooth, for example, an exposed dentinal surface, and impingement of the jet onto the surface generates an acoustic wave that propagates throughout the tooth. The acoustic wave effectively detaches organic material from dentinal surfaces and tubules. The detached organic material is flushed from the root canal system by the liquid jet and/or by additional irrigation.
    Type: Application
    Filed: June 13, 2014
    Publication date: May 14, 2015
    Inventors: Morteza Gharib, Joshua Adams, Erik Hars, Bjarne Bergheim, Karl Stocks, Lance Doherty
  • Publication number: 20150125811
    Abstract: An apparatus for endodontic treatment, used for cleaning and/or abrading a root canal using at least one angled fluid jet. In some embodiments, the apparatus comprises a nozzle that is shaped to create one or more angled fluid jets, for example including an internal cone and an external cone. In some embodiments, the flow of fluid advances along a root canal wall for removal of soft tissue such as nerve tissue, pulp tissue, and/or debris.
    Type: Application
    Filed: April 15, 2013
    Publication date: May 7, 2015
    Inventors: Amnon Lifshitz, Yehuda Darshan
  • Patent number: 9017076
    Abstract: A method, and handpiece for performing the method, for controlling a drive device for moving a root canal instrument having a drive shaft and at least one cutting edge for preparing a root canal, and at least one drive motor being operated by a control unit. The root canal instrument is moved in at least one reciprocal movement in a first direction of rotation over a predetermined first angle of rotation and subsequently in a second direction of rotation opposite to the first direction of rotation over a predetermined second angle of rotation. After the at least one reciprocal movement, the root canal instrument is rotated over at least one third angle of rotation.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: April 28, 2015
    Assignee: Gebr. Brasseler GmbH & Co. KG
    Inventor: Karl-Heinz Danger
  • Publication number: 20150099244
    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. A method for use in general dentistry and in endodontics to replace natural tooth material.
    Type: Application
    Filed: March 20, 2013
    Publication date: April 9, 2015
    Applicant: LOMA LINDA UNIVERSITY
    Inventors: Mahmoud Torabinejad, Homayoun Moaddel
  • Patent number: 9000332
    Abstract: An apparatus and method for heating an endodontic instrument by infrared radiation includes a housing defining a chamber. An infrared heating element is positioned within the chamber. The housing includes an aperture and an adjacent holder for holding the endodontic instrument, such as an obturator. The endodontic instrument held by the holder extends through the aperture and into the chamber. The infrared heating element directs infrared radiation toward the endodontic instrument, which heats the endodontic instrument.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: April 7, 2015
    Assignee: Ormco Corporation
    Inventor: Erik Brown
  • Publication number: 20150086937
    Abstract: A dental treating apparatus according to the present invention includes: a hand piece; a head unit; a driving unit; a control unit; a load specifying unit; and a load comparing unit. The hand piece drivably holds a cutting tool on the head unit. The driving unit drives the cutting tool in a normal rotation direction or in a reverse rotation direction. The load comparing unit compares a load detected and a reference load. During a normal rotation period until driving for rotating the cutting tool in the normal rotation direction by the driving unit satisfies a predetermined first condition, the control unit maintains a rotation direction of the cutting tool in the normal rotation direction, and when a result of comparison by the load comparing unit attains a predetermined result during the normal rotation period, the control unit controls the rotation direction to the reverse rotation direction.
    Type: Application
    Filed: September 18, 2014
    Publication date: March 26, 2015
    Inventors: Naoki Katsuda, Seiichiro Yamashita, Tomoaki Ueda, Hideo Hijikata
  • Publication number: 20150086631
    Abstract: Chitosan nanoparticles are provided for use in the in vivo treatment of connective tissues in root canal therapies. The nanoparticles are optionally linked with one or more photoactivatable compounds for providing antibactenal/antibiofilm properties, neutralizing bacterial byproducts and/or chemical/photodynamic crosslinking to achieve enhanced mechanical properties, chemical stability in connective tissues and/or to improve surface/interfacial integrity between filling material and connective tissue.
    Type: Application
    Filed: March 21, 2013
    Publication date: March 26, 2015
    Applicant: THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO
    Inventors: Anil Kishen, Annie Shrestha
  • Patent number: 8974229
    Abstract: A method of virtually designing a post and core restoration for attachment in a damaged tooth of a patient, where the tooth includes a bore for receiving the post of the post and core, the method includes obtaining a first 3D scan includes at least a part of the damaged tooth; providing a digital 3D shape adapted to fit the bore of the damaged tooth; virtually matching the first 3D scan of the tooth and the digital 3D shape, where the matching includes matching a surface region in the first 3D scan of the tooth with a corresponding surface region of the digital 3D shape, such that at least part digital 3D shape is represented relative to the first 3D scan of the tooth; and virtually designing the post and core restoration based on the representation of the digital 3D shape relative to the first 3D scan of the tooth.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: March 10, 2015
    Assignee: 3Shape A/S
    Inventors: Rune Fisker, Sven Nonboe
  • 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
  • Publication number: 20150056567
    Abstract: A device and method of using a device for photon-induced endodontic and periodontic applications includes a power source, a trigger coupled to the power source and circuit elements initiated by the trigger. The circuit elements include a timing circuit and a driver. A light source is coupled to the circuitry elements wherein and driver controls the period, cycle, and pulse generation of the light source to create photon induced acoustic waves. The optical assembly includes a fiber optic cable and an output tip and is coupled to the light source. This optical assembly refracts light from the light source and photon induced acoustic waves exit the output tip in a pre-determined pattern.
    Type: Application
    Filed: November 29, 2012
    Publication date: February 26, 2015
    Applicant: AMERICAN EAGLE INSTRUMENTS, INC.
    Inventors: Gilbert Fregoso, Brad B. Heckerman
  • Publication number: 20150056568
    Abstract: Methods and devices for Live Biofilm Targeted Thermolysis (LBTT) are disclosed. The disclosed LBTT methods can be used for thermolysis and coagulation of the live periodontal Biofilm with incandescent light and a targeting agent as heat sink. A delivery assembly can be used to deliver the incandescent light generated through the secondary quantum optical and thermal emissions from a carbonized near infrared diode laser delivery fiber, otherwise known as a “hot tip,” to an application region that includes live biofilm. With this novel targeted approach of exploiting the incandescent hot tip's radiant energy (i.e. its optical and thermal emissions), the physical nature of the targeted live biofilm in the periodontal pocket is changed from a mucinous liquid-gel, to a semi-solid coagulum, which then facilitates its removal from the effected pocket, with traditional mechanical SRP periodontal techniques.
    Type: Application
    Filed: September 8, 2014
    Publication date: February 26, 2015
    Inventor: Eric BORNSTEIN
  • Publication number: 20150056571
    Abstract: An endodontic instrument adapted to be axially reciprocated within a root canal to remove material from walls of the root canal. The endodontic instrument includes an elongate shaft and a working portion. The elongate shaft includes a proximal end adjacent a handle and a distal end terminating at a tip spaced from the proximal end by the length of the instrument. The working portion includes a first helical fluted cutting surface for removing material from the walls of a root canal and a second helical fluted cutting surface for removing material from the walls of a root canal. The first helical fluted cutting surface and second helical fluted cutting surfaces are formed in opposing left-hand and right-hand directions such that material is removed form the walls of a root canal when the instrument is rotated in either a first or a second direction.
    Type: Application
    Filed: August 20, 2013
    Publication date: February 26, 2015
    Inventors: Derek Heath, Steve Treadway
  • Patent number: 8961180
    Abstract: A single intra-canal substance composition for tissue dissolution, disinfection, tissue degradation, tissue removal and disinfection is provided. The composition includes calcium hydroxide, sodium hydroxide, potassium thioglycolate or calcium thioglycolate, to form an effective single intra-canal substance capable of degrading a cell by disrupting its disulfide bonds. Further, the composition may incorporate mineral oil, urea, cetearyl alcohol, D&C yellow No. 8, chromium hydroxide, theobroma cocoa seed butter, iron oxides, fragrances, water fragrance, lanolin, and ceteareth-20 to enhance its functioning. Furthermore, the composition that is bactericidal against Enterococcus faecalis, Streptococcus mutans and Candida albicans, used in multiple applications in dentistry and medicine. Furthermore, the composition is a single intra-canal irrigant that eradicates microorganisms as it facilitates the chemo-mechanical debridement of the root canal system.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: February 24, 2015
    Inventor: Amy Dukoff