Patents by Inventor Naim Karazivan

Naim Karazivan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20180206955
    Abstract: A light curing dental system comprising a light emitting tray that precisely distributes an optimal amount of curing light energy to internal, external and extra oral portions of the dental arch to cure a dental material. The light curing dental system generally includes a light source, a light emitting dental tray, an activation module and a photocurable dental material.
    Type: Application
    Filed: January 25, 2018
    Publication date: July 26, 2018
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Naim Karazivan, Paul Pierson, Christos Angeletakis
  • Publication number: 20180049843
    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: Application
    Filed: November 2, 2017
    Publication date: February 22, 2018
    Applicant: Dentsply Sirona Inc.
    Inventors: Vincent SHOTTON, Dan AMMON, Naim KARAZIVAN
  • Publication number: 20180000561
    Abstract: Described herein is a dental material applicator system comprising a segmented capsule and handpiece. The capsule separately holds a powder and a liquid such that upon activation in the handpiece by an operator, the powder and liquid are mixed into a paste. The operator then triggers the handpiece so that the mixed paste is extruded.
    Type: Application
    Filed: March 7, 2016
    Publication date: January 4, 2018
    Applicant: Dentsply Sirona Inc.
    Inventors: Paul R. PIERSON, CHRISTOPH WEBER, PETER MAX COVELESKI, KENNETH R. GUARAGNO, NAIM KARAZIVAN, JAMES SIRKIS
  • 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
  • Publication number: 20170231724
    Abstract: A method of attaching a dental article to the surface of a tooth includes providing the dental article and applying a coating including upconversion phosphors to a surface of the dental article. The method also includes applying a dental cement composition to the surface of the tooth and placing the dental article on the surface of the tooth such that the coating is adjacent the dental cement composition. The dental cement composition includes a polymerizable resin and a photoinitiator and is substantially free of upconversion phosphors. The method further includes irradiating the coating with a radiation source that emits radiation at a pre-determined fixed wavelength that causes the upconversion phosphors to emit radiation at an activation wavelength of the dental cement composition photoinitiator such that the dental cement composition cures in a region adjacent the coating and removing remaining uncured dental cement composition outside the dental article from the tooth.
    Type: Application
    Filed: May 2, 2017
    Publication date: August 17, 2017
    Inventors: Naim KARAZIVAN, Hui LU, Thomas ERTL
  • Patent number: 9675435
    Abstract: A luminescent coating is disclosed that is used to dimensionally control the curing of a photocurable agent placed in close contact with the coating. The coating is applied at the interface of structures, such as brackets and prosthetics, or may be applied directly on a curable material for use in 3D printing, at the location where bonding material is needed to be cured. The luminescent coating irradiates from its structure the curing radiations necessary to photopolymerize the resin in response to a first radiation irradiated on its structure of a different wavelength.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: June 13, 2017
    Assignee: Dentsply Sirona Inc.
    Inventors: Naim Karazivan, Hui Lu, Thomas Ertl
  • Publication number: 20170079757
    Abstract: A method of diagnosing optical inhomogeneity of a volume scattering object is provided. The method includes the steps of providing a substance coated with phosphorous materials, adapting the substrate to a surface of a volume scattering object to be diagnosed, and trans-illuminating the volume scattering object with radiation. A dental tool including a substrate is also provided. The substrate includes a transparent flexible film or metallic foil with an applied coating of upconversion phosphors, afterglow particles or both.
    Type: Application
    Filed: November 15, 2016
    Publication date: March 23, 2017
    Inventors: Naim KARAZIVAN, Hui LU, Thomas ERTL
  • Publication number: 20170071712
    Abstract: A three-dimensional printing system including a feed source of uncured filled resin material, a print head configured to apply discrete layers of a composition including upconversion phosphors, and a radiation source configured to irradiate layers of uncured filled resin material and deposited layers of the composition is provided. A method of three dimensionally printing a dental article is also provided.
    Type: Application
    Filed: November 15, 2016
    Publication date: March 16, 2017
    Inventors: Naim KARAZIVAN, Hiu LU, Thomas ERTL
  • Publication number: 20150182321
    Abstract: A luminescent coating is disclosed that is used to dimensionally control the curing of a photocurable agent placed in close contact with the coating. The coating is applied at the interface of structures, such as brackets and prosthetics, or may be applied directly on a curable material for use in 3D printing, at the location where bonding material is needed to be cured. The luminescent coating irradiates from its structure the curing radiations necessary to photopolymerize the resin in response to a first radiation irradiated on its structure of a different wavelength.
    Type: Application
    Filed: December 31, 2014
    Publication date: July 2, 2015
    Inventors: Naim KARAZIVAN, Hui LU, Thomas ERTL
  • Publication number: 20150164614
    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: Application
    Filed: December 10, 2014
    Publication date: June 18, 2015
    Inventors: Vincent SHOTTON, Dan AMMON, Naim KARAZIVAN
  • Patent number: 8992216
    Abstract: There is provided a method for detecting interproximal tooth defects such as caries by injecting light at one or more wavelengths into a tooth and detecting reflected/diffracted light or emitted fluorescence. The detected light intensity is characteristic of a healthy or diseased tooth in the interproximal area.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: March 31, 2015
    Assignee: Dentsply Canada Ltd.
    Inventor: Naim Karazivan
  • Patent number: 8814571
    Abstract: The present invention relates to a tooth coating applicator (10), typically in the form of a strip (11), and a method for applying a dental sealant to a surface of a tooth (T), and specifically to the interproximal surface (S) thereof. The applicator (10) is elongated and is adapted to be typically inserted into an interproximal space (I) defined between a pair of adjacent teeth (T, T?) and to be gradually slid against a dental surface of one of the teeth.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: August 26, 2014
    Assignee: Dentsply Canada Ltd.
    Inventor: Naim Karazivan
  • Patent number: 8721327
    Abstract: A dental tartar detection and removal device (10) comprises a powered tartar removal instrument (12) adapted to be displaced along a tooth (T), illumination means (14) for illuminating with an incident light a region on the examined or periodontal site, detection means (16) for collecting the light reflected there at, and an analysing system for providing a signal to an operator (OP) of the tartar removal instrument (12) or to the tartar removal instrument when measurements on the reflected light in one or more predetermined ranges of wavelengths fall within any first predetermined range of values that are characteristic of tartar, or when said measurements do not fall within any second predetermined range of values that are characteristic of artefacts other than tartar.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: May 13, 2014
    Assignee: Dentsply Canada Ltd.
    Inventors: Naim Karazivan, Emmanuel Montini, François Ayotte
  • Patent number: 8297971
    Abstract: A dental tartar detection system (10), especially for detection of subgingival tartar (S), comprises a probe (12) adapted to be displaced along a tooth (T) an illumination system (14) for illuminating with an incident light a region on the tooth (T), a detection system (16) for collecting the light reflected thereat, and an analysis system (34) for providing a signal to an operator of the probe (12) when measurements on the reflected light in one or more predetermined range of wavelengths fall within any predetermined range of values that are characteristic of tartar (S). Typically, the detection of tartar (S) is achieved on the basis of the possible colors that tartar (S) can have such that the aforementioned one or more predetermined range of values cover wavelengths associated with colors of tartar (S).
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: October 30, 2012
    Assignee: Dentsply Canada Ltd.
    Inventors: Yves Berube-Lauziere, Naim Karazivan, Emmanuel Montini, Sophie Bernier, Marc Levesque, Yvan Mimeault, Michel Doucet
  • Publication number: 20120040305
    Abstract: The present application relates to an apparatus and method in the field of dentistry and in particular to optical tools for diagnosis and imaging. It is a problem of the prior art that the use of fibre optic components yield a bulky dental camera with poor resolution. It is an object of the present invention to provide an imaging device (55) for dental instruments comprising a chamber adapted to be secured to the head of a dental instrument and for receiving and removing an imaging device (1), the chamber also adapted for isolating said imaging device from said dental instrument without compromising sterility of the dental instrument, comprising an optical window (53). The imaging device is easily removable from the dental instrument and electronic image detection occurs at the instrument head.
    Type: Application
    Filed: September 24, 2009
    Publication date: February 16, 2012
    Applicant: DENSTPLY INTERNATIONAL INC.
    Inventors: Naim Karazivan, Thomas Ertl, Kenneth R. Guaragno, Eugene J. Novak
  • Publication number: 20110294089
    Abstract: A dental tartar detection and removal device (10) comprises a powered tartar removal instrument (12) adapted to be displaced along a tooth (T), illumination means (14) for illuminating with an incident light a region on the examined or periodontal site, detection means (16) for collecting the light reflected there at, and an analysing system for providing a signal to an operator (OP) of the tartar removal instrument (12) or to the tartar removal instrument when measurements on the reflected light in one or more predetermined ranges of wavelengths fall within any first predetermined range of values that are characteristic of tartar, or when said measurements do not fall within any second predetermined range of values that are characteristic of artefacts other than tartar.
    Type: Application
    Filed: April 20, 2011
    Publication date: December 1, 2011
    Applicant: Dentsply Canada Ltd.
    Inventors: Naim KARAZIVAN, Emmanuel MONTINI, François AYOTTE
  • Publication number: 20110177467
    Abstract: There is disclosed a tartar removal tip having a ceramic distal portion and a metal proximal portion. An optical dental pathology detection system has a housing that mates with a handle of a tartar removal instrument. A replacement tip for a tartar removal device has integrated optical components and a coupler for coupling to a dental pathology detection system without interacting or changing a handle of an instrument to which the replacement tip connects.
    Type: Application
    Filed: January 19, 2011
    Publication date: July 21, 2011
    Applicant: DENTSPLY CANADA LTD.
    Inventor: Naim KARAZIVAN
  • Publication number: 20110165534
    Abstract: A dental tartar detection system (10), especially for detection of subgingival tartar (S), comprises a probe (12) adapted to be displaced along a tooth (T) an illumination system (14) for illuminating with an incident light a region on the tooth (T), a detection system (16) for collecting the light reflected thereat, and an analysis system (34) for providing a signal to an operator of the probe (12) when measurements on the reflected light in one or more predetermined range of wavelengths fall within any predetermined range of values that are characteristic of tartar (S). Typically, the detection of tartar (S) is achieved on the basis of the possible colours that tartar (S) can have such that the aforementioned one or more predetermined range of values cover wavelengths associated with colours of tartar (S).
    Type: Application
    Filed: December 29, 2010
    Publication date: July 7, 2011
    Applicant: DENTSPLY CANADA LTD
    Inventors: Yves BERUBE-LAUZIERE, Naim KARAZIVAN, Emmanuel MONTINI, Sophie BERNIER, Marc LEVESQUE, Yvan MIMEAULT, Michel DOUCET
  • Patent number: 7862335
    Abstract: A dental tartar detection system (10), especially for detection of subgingival tartar (S), comprises a probe (12) adapted to be displaced along a tooth (T), an illumination system (14) for illuminating with an incident light a region on the tooth (T), a detection system (16) for collecting the light reflected thereat, and an analysis system (34) for providing a signal to an operator of the probe (12) when measurements on the reflected light in one or more predetermined range of wavelengths fall within any predetermined range of values that are characteristic of tartar (S). Typically, the detection of tartar (S) is achieved on the basis of the possible colors that tartar (S) can have such that the aforementioned one or more predetermined range of values cover wavelengths associated with colors of tartar (S).
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: January 4, 2011
    Assignee: Dentsply Canada Ltd.
    Inventors: Yves Berube-Lauziere, Naim Karazivan, Emmanuel Montini, Sophie Bernier, Marc Levesque, Yvan Mimeault, Michel Doucet
  • Publication number: 20100203467
    Abstract: The present invention relates to a tooth coating applicator (10), typically in the form of a strip (11), and a method for applying a dental sealant to a surface of a tooth (T), and specifically to the interproximal surface (S) thereof. The applicator (10) is elongated and is adapted to be typically inserted into an interproximal space (I) defined between a pair of adjacent teeth (T, T?) and to be gradually slid against a dental surface of one of the teeth.
    Type: Application
    Filed: April 17, 2009
    Publication date: August 12, 2010
    Applicant: DENTSPLY CANADA LTD.
    Inventor: Naim Karazivan