Patents Assigned to Dentsply International Inc.
  • Patent number: 10117810
    Abstract: Dental cement composition comprising (i) a particulate filler reactive with a polyacid in a cement reaction; (ii) a water-soluble polymerizable compound of the following formula (1), AXn (1) wherein A is a linker group containing at least n nitrogen atoms and optionally one or more acidic groups, X are moieties containing a polymerizable double bond and forming an amide bond with a nitrogen atom of A, which X may be the same or different and are represented by the following formula (2) wherein R1 and R2 are independent from each other and represent a hydrogen atom, a C1-6 alkyl group or a group —(CH2)m—Z, wherein Z is COOM, OPO3M2, PO3M2, SO3M, and M is independently a hydrogen atom or a metal atom, and m is an integer of from 0 to 6, L is a bond or a C1-6 alkylene group; and n is an integer of at least 1; provided that at least one X cannot be a (meth)acryl group; and (iii) an initiator system; optionally a polyacidic polymer having polymerizable double bonds; and optionally water.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: November 6, 2018
    Assignee: Dentsply International Inc.
    Inventors: Simon Stelzig, Joachim E. Klee, Andreas Facher, Christoph Weber
  • Publication number: 20180142377
    Abstract: A medical instrument comprising a mono-crystalline shape memory alloy and a method for forming thereof.
    Type: Application
    Filed: November 21, 2016
    Publication date: May 24, 2018
    Applicant: DENTSPLY International Inc.
    Inventors: Yong Gao, Dan Ammon, Geoffrey Kamau NDUNGU
  • Publication number: 20180071175
    Abstract: Dental cement composition comprising (i) a particulate filler reactive with a polyacid in a cement reaction; (ii) a water-soluble polymerizable compound of the following formula (1), AXn (1) wherein A is a linker group containing at least n nitrogen atoms and optionally one or more acidic groups, X are moieties containing a polymerizable double bond and forming an amide bond with a nitrogen atom of A, which X may be the same or different and are represented by the following formula (2) wherein R1 and R2 are independent from each other and represent a hydrogen atom, a C1-6 alkyl group or a group —(CH2)m—Z, wherein Z is COOM, OPO3M2, PO3M2, SO3M, and M is independently a hydrogen atom or a metal atom, and m is an integer of from 0 to 6, L is a bond or a C1-6 alkylene group; and n is an integer of at least 1; provided that at least one X cannot be a (meth)acryl group; and (iii) an initiator system; optionally a polyacidic polymer having polymerizable double bonds; and optionally water.
    Type: Application
    Filed: October 18, 2011
    Publication date: March 15, 2018
    Applicant: DENTSPLY INTERNATIONAL INC.
    Inventors: Simon Stelzig, Joachim E. Klee, Andreas Facher, Christoph Weber
  • Patent number: 9902025
    Abstract: A method for manufacturing at least one nonlinear file including the steps of deforming at least a portion of a linear file away from a file axis and heat-treating the deformed file to shape-set the nonlinear file.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: February 27, 2018
    Assignee: DENTSPLY International Inc.
    Inventors: Vincent Shotton, Dan Ammon
  • Patent number: 9881193
    Abstract: Disclosed is a method for reading a two-dimensional code (17) by means of a camera (1) used for the three-dimensional optical measurement of an object using triangulation. Said method comprises the steps of placing the camera (1) above the two-dimensional code (17), having a white light source (5) of the camera (1) illuminate the code (17), having the camera (1) capture an image (18) of the code (17), and having an arithmetic unit (6) read data encrypted in the code (17) from the image (18) of the code (17).
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: January 30, 2018
    Assignee: Dentsply International Inc.
    Inventors: Bjorn Popilka, Gerrit Kocherscheidt
  • Patent number: 9878145
    Abstract: An apparatus comprising a conduit clamping device with a closing mechanism for closing and opening passage of fluid or air in a flexible conduit is disclosed. The apparatus comprises a movable arm or disk that is connected to a manipulation arm or a knob; a conduit in form of a tube, that is laid flat against an abutment or protrusion; and a guide structure that constrains the movable arm or disk between the guide structure and the tube and being designed such that movement of the arm or disk will control the compression of the tube.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: January 30, 2018
    Assignee: DENTSPLY International Inc.
    Inventors: Niels Erik Holm, Erik Andréen, Bengt Daniel Envall
  • Patent number: 9833299
    Abstract: A multi-directional handpiece that includes a motor drive extending along and configured for rotation about a body axis, the motor drive having: a motor gearing at a proximal end of the motor drive; and a file gearing in engagement with the motor gearing for transferring the rotational and axial movement to a workpiece; and a housing for the workpiece; and wherein through rotation of the motor drive, the workpiece moves in an axial oscillating motion while being rotated.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: December 5, 2017
    Assignee: DENTSPLY International Inc.
    Inventors: Vincent Shotton, Dan Ammon, Naim Karazivan
  • Patent number: 9820834
    Abstract: A tip assembly for use with a dental tool, the tip assembly comprising a housing for attaching to the dental tool, at least one aspiration needle having a passageway extending at least partially through the aspiration needle, a substantial length of the aspiration needle, or at least from one end to the other end of the aspiration needle, the passageway providing a single continuous path to aspirate the irrigant and/or debris from the root canal cavity of the tooth, and at least one irrigation needle having a passageway extending at least partially through the irrigation needle, a substantial length of the irrigation needle, or at least from one end to the other end of the irrigation needle, the passageway provides a continuous flow path for delivering fluid/irrigant from a reservoir in communication with a proximal end of the irrigation needle to the distal end of the irrigation needle and into a root canal/coronal opening of a tooth.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: November 21, 2017
    Assignee: DENTSPLY INTERNATIONAL INC.
    Inventors: Randall Maxwell, Kevin Wilkinson
  • Patent number: 9814541
    Abstract: A method for controlling a dental instrument includes a foot pedal responsive to commands from a user. An operating mode is selectable between normal and boost cycle. A conventional mode is selectable by pressing and holding the foot pedal to a first level to operate in normal mode. The foot pedal operates in a boost mode when the pedal advances to a second level. Maintained mode is selectable by tapping the foot pedal to change modes between idle, normal and boost mode. Each mode is switched by tapping the foot pedal. The pedal switches between the second process and the first process by pressing and holding the foot pedal at the desired level corresponding to normal or boost mode. The pedal switches from the first process to the second process by tapping the foot pedal at the level corresponding to normal or boost.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: November 14, 2017
    Assignee: Dentsply International Inc.
    Inventor: Kenneth R. Guaragno
  • Patent number: 9814655
    Abstract: Described herein is a dental filler material having a core made of a core material and a shell made of a shell material, where the shell material coats or covers at least a portion of the core.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: November 14, 2017
    Assignee: Dentsply International Inc.
    Inventors: Yang Cai, Xiaoming Jin, Xin Huo
  • Patent number: 9801792
    Abstract: A dental composition comprising: a) about 1 to about 80% by weight of particulate material including: (i) calcium silicate, calcium aluminate, tetracalcium aluminoferrite, calcium phosphate, calcium sulfate, silica, alumina, calcium oxide, calcium hydroxide, or mixtures thereof; and b) about 1 to about 50% by weight liquid carrier including: (i) water-soluble polymer, (ii) surfactant, the surfactant is selected from the group consisting of alkyl sulfates, alkyl ether sulfates, and sarcosinates, and mixtures thereof; and (iii) water; wherein the particulate and liquid carrier being mixed together to form a hydrate gel material that can harden.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: October 31, 2017
    Assignee: DENTSPLY International Inc.
    Inventors: Carolyn M. Primus, James L. Gutmann, Miklos M. Breuer, Steven R. Jefferies
  • Patent number: 9782239
    Abstract: The invention relates to a fixture, such as a dental fixture, for insertion into a bore hole arranged in bone tissue. The fixture has two condensation portions, which may be designed to provide the same or different tensile strain levels to the cortical and cancellous bone tissue, respectively. The invention also relates to a thread maker for making a female thread in bone tissue prior to insertion of a fixture. The invention further relates to a fixture set, having a thread maker and a fixture.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: October 10, 2017
    Assignee: DENTSPLY International Inc
    Inventors: Stig Hansson, Anders Halldin
  • Patent number: 9757216
    Abstract: The invention relates to an optical measuring system (1) and to a method for measuring an object (9) in a three-dimensional manner. The measuring system (1) has at least one lens array (5), a first convex lens (6) arranged downstream, a second convex lens (8) which is arranged further downstream and which faces an object (9) to be measured, and additionally a means (7) which absorbs incident light or deflects incident light out of the illuminating beam path and which is arranged upstream of the second convex lens (8) or on the second convex lens (8) on a second convex lens (8) face facing the first convex lens (6) in the region of the optical axis (10).
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: September 12, 2017
    Assignee: Dentsply International Inc.
    Inventors: Lukas Wewer, Mark Weber, Georg Wiora
  • Patent number: 9737465
    Abstract: The invention relates to a blank for producing a dental molded part such as an inlay, onlay, crown or bridge, and to a method for producing the blank. To be able to machine a dental molded part, in particular one having thin wall thicknesses, from the blank without difficulty, the blank is designed to consist of a glass ceramic having a density of between 30 and 60% of theoretical density, and of glass-ceramic powder particles with a particle size distribution d90?80 ?m, lithium silicate crystals being present in an amount of 10 to 90% by volume.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: August 22, 2017
    Assignee: DENTSPLY INTERNATIONAL INC.
    Inventors: Stefan Fecher, Heiner Hörhold, Udo Schusser, Markus Vollmann, Martin Kutzner
  • Patent number: D798451
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: September 26, 2017
    Assignee: DENTSPLY International Inc.
    Inventors: Vincent Shotton, Kevin Wilkinson
  • Patent number: D798456
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: September 26, 2017
    Assignee: Dentsply International Inc.
    Inventors: Paul Richard Pierson, Paul McDonough
  • Patent number: D799043
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: October 3, 2017
    Assignee: Dentsply International Inc.
    Inventor: Reinhold Storch
  • Patent number: D801546
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: October 31, 2017
    Assignee: DENTSPLY International Inc.
    Inventors: Anders Johansson, Henrik Johansson, Johan Bergelin, Ole Kristian Lund Bjerke
  • Patent number: D812753
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: March 13, 2018
    Assignee: DENTSPLY INTERNATIONAL Inc.
    Inventor: Kevin Wilkinson
  • Patent number: D818124
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: May 15, 2018
    Assignee: DENTSPLY International Inc.
    Inventors: Marcel Kiefer, Mattias Marklund