Search Patents
  • Method for adapting a crown to an existing partial denture
    Patent number: 5785526
    Abstract: A method for adapting a crown to a clasp and rest of an existing partial denture without depriving a patient of the partial denture during the time the crown is being fabricated in a dental laboratory. The method comprises the steps of fabricating an accurate pick-up impression of the clasp and rest in a dentist's office, fabricating an accurate model of the clasp and rest in a dental laboratory, and incorporating the clasp and rest model in a model at the dental laboratory which is used for fabricating a crown. The fabrication of the accurate clasp and rest model by a dentist includes the important step of supporting the pick-up impression of the clasp and rest on a dimensionally stable coping over a tooth which has been prepared for the crown.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: July 28, 1998
    Assignee: Coaching For Service, Inc.
    Inventor: Alan D. Barnes
  • Dental crown and a method of fabricating and installing such a dental crown in one patient visit
    Publication number: 20120156650
    Abstract: A process to make/seat a permanent crown in only one patient visit, without the need for a temporary crown, after a digital scan or other impression has been taken prior during a dental cleaning appointment or status check up. The dental information is filed and can be used whenever the patient needs a dental restoration to be made. The impression information will have previously been forwarded to a dental laboratory where a shell-crown can be made that is a perfect match to the outer contour of the existing tooth. Needed improvements/corrections can be made with the use of digital software. Also the margins can be determined and corrected, even in the inter-proximal spaces. Now the laboratory is able to manufacture and provide a finished shell-crown in time for the following doctor appointment of this patient.
    Type: Application
    Filed: December 8, 2011
    Publication date: June 21, 2012
    Inventors: James R. Glidewell, Robin A. Carden, Wolfgang Friebauer
  • Working model for prosthodontic preparation of a crown for installation on an implant fixture
    Patent number: 5658147
    Abstract: A method of producing a working model for preparation of a clinical crown for attachment to an implant fixture in the mouth of a patient is described in which a laboratory analog, on which the crown is mounted during preparation, is formed as an assembly including a fixed sleeve and a detachable pin and wherein the crown-receiving portion of the pin element of the assembly replicates the crown-receiving portion of the implant fixture. The analog sleeve is fixedly mounted in a base segment of the model so that the analog pin bearing a crown to be prepared threadedly connected thereto can be removed from and returned to mounted installation in the model by simple sliding movement between the pin and sleeve. Also described is the resultant working model construction and the particular analog elements which also form parts of the invention.
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: August 19, 1997
    Assignee: Shopvest, Inc.
    Inventor: Anopet Phimmasone
  • Working model for prosthodontic preparation of a crown for installation on an implant fixture
    Patent number: 5788494
    Abstract: A method of producing a working model for preparation of a clinical crown for attachment to an implant fixture in the mouth of a patient is described in which a laboratory analog, on which the crown is mounted during preparation, is formed as an assembly including a fixed sleeve and a detachable pin and wherein the crown-receiving portion of the pin element of the assembly replicates the crown-receiving portion of the implant fixture. The analog sleeve is fixedly mounted in a base segment of the model so that the analog pin bearing a crown to be -prepared threadedly connected thereto can be removed from and returned to mounted installation in the model by simple sliding movement between the pin and sleeve. Also described is the resultant working model construction and the particular analog elements which also form parts of the invention.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: August 4, 1998
    Assignee: Shopvest, Inc.
    Inventor: Anopet Phimmasone
  • UNIVERSAL DENTAL CROWN AND SYSTEM AND METHOD OF RESTORING A TOOTH USING A UNIVERSAL DENTAL CROWN
    Publication number: 20110117524
    Abstract: The present invention relates to dental crowns for use in restoring a prepared tooth wherein the dental crown comprises a universally sized crown shell and crown matrix to enable the sizing and fitting of the dental crown to the patient in a single sitting and without an impression or laboratory procedure.
    Type: Application
    Filed: July 30, 2010
    Publication date: May 19, 2011
    Applicant: Tri-Dent Innovations Limited
    Inventors: Simon Paul McDonald, Adam Doudney
  • Process for making ceramic dental crowns
    Patent number: 5346397
    Abstract: A process for making artificial porcelain teeth or laboratory fabricated dental crowns includes casting or molding a plurality of tooth-shaped unfired shells from ceramic powder and a resin, acrylic, wax or starch in liquid form and molded and hardened into shapes of predetermined tooth contours. These dried powder like, thin and highly characterized outside shells of a general tooth shape are then merged into a full porcelain powder buildup of the tooth shape by using conventional porcelain powders mixed into a paste, conventionally, as a filling medium completing the buildup of tooth or crown form. This form is then placed into a furnace and heated to purge undesired resin, acrylic, wax or starch and other extraneous material, and then it is baked conventionally to further purge same and obtain an artificial tooth or crown in the most desirable form possible for the technician who then finalizes the contour by grinding and polishing or glazing same conventionally.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: September 13, 1994
    Inventor: Kenneth S. Braiman
  • CROWN AND ROOT DENTAL RESTORATION, METHOD FOR PERFORMING ONE SUCH RESTORATION AND METHOD FOR ETCHING ONE SUCH DENTAL RESTORATION
    Publication number: 20190110864
    Abstract: A method for performing crown and root restoration on a laboratory model that includes making an impression of the pulp chamber to form the crown part of the restoration, at least one stopped root canal opening into the pulp chamber, producing a prosthesis from the impression, the prosthesis includes at least one through canal, having an end opening onto the one root canal, unstopping the root canal, filling the root canal and the through canal with a glue, fitting the prosthesis so that the one through canal opens onto the one unstopped root canal, and inserting a plurality of reinforcement pins in the one root canal through the one through canal, the one through canal and the one root canal being filled by the plurality of reinforcement pins and the glue.
    Type: Application
    Filed: October 12, 2018
    Publication date: April 18, 2019
    Inventors: Bruno CLUNET-COSTE, Bernard MANEUF, André COLLOMBIN
  • Working model for prosthodontic preparation of a tooth for installation of an implant fixture
    Patent number: 5934906
    Abstract: A method of producing a working model for preparation of a clinical crown for attachment to an implant fixture in the mouth of a patient is described in which a laboratory analog, on which the crown is mounted during preparation, is formed as an assembly including a fixed sleeve and a detachable pin and wherein the crown-receiving portion of the pin element of the assembly replicates the crown-receiving portion of the implant fixture. The analog sleeve is fixedly mounted in a base segment of the model so that the analog pin bearing a crown to be prepared threadedly connected thereto can be removed from and returned to mounted installation in the model by simple sliding movement between the pin and sleeve. Also described is the resultant working model construction and the particular analog elements which also form parts of the invention.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: August 10, 1999
    Assignee: Shopvest, Inc.
    Inventor: Anopet Phimmasone
  • Genetically modified bacteria and methods for genetic modification of bacteria
    Patent number: 10584344
    Abstract: Microbes can be genetically modified to express biomolecules that are beneficial to mammals and/or to reduce, or eliminate, expression of harmful virulence factors. The growth and viability of such genetically modified microbes can optionally be controlled by inducible promoters that regulate the expression of proteins that are essential to their growth and survival. Compositions comprising such genetically modified microbes as well as methods of making and using the same are disclosed herein.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: March 10, 2020
    Assignee: CROWN LABORATORIES, INC.
    Inventors: Thomas Hitchcock, Mun Su Rhee
  • Skin probiotic formulation
    Patent number: 11504404
    Abstract: Microbes can be genetically modified to express biomolecules that are beneficial to mammals and/or to reduce, or eliminate, expression of harmful virulence factors. The growth and viability of such genetically modified microbes can optionally be controlled by inducible promoters that regulate the expression of proteins that are essential to their growth and survival. Compositions comprising such genetically modified microbes as well as methods of making and using the same are disclosed herein.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: November 22, 2022
    Assignee: CROWN LABORATORIES, INC.
    Inventors: Thomas Hitchcock, Mun Su Rhee
  • Dental crown and method for making same
    Patent number: 5131847
    Abstract: A method for making a jacket crown restoration is disclosed wherein the crown has a metal foil substrate of a high fusing temperature metal such as platinum as an integral component of the finished porcelain jacket crown. The present invention provides both anterior and posterior porcelain metal crown restorations and methods for making same. According to the present invention, a thin metal foil of a high fusing temperature metal is molded around a die of the tooth to be replaced. The foil has two ends which are terminated in a bondable mechanical joint to form a sealed thin metal foil substrate or skeleton for the dental preparation. The foil substrate is appropriately cleaned, coated with a retention compound to enhance the bonding of a veneer to the foil substrate and thereafter coated with a veneer to form the dental jacket crown.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: July 21, 1992
    Assignee: Ijuin Dental Laboratory Inc.
    Inventor: Toshihiko Ijuin
  • Package for a suncream
    Patent number: 6405867
    Abstract: A bottle includes a base and a continuous sidewall extending upwardly from the periphery of the base to a neck. The neck defines an opening which is selectively blocked by a lid. Base and sidewall define a cavity for containing a suncream or the like which a person selectively applies to their skin to reduce the harmful effects of the sun's rays. The package also contains display means for providing a person with the indication of the intensity of UV radiation, or another ambient condition, incident upon the package.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: June 18, 2002
    Assignee: Crown Laboratories, Inc.
    Inventor: Peter John Moore
  • Package for a suncream
    Patent number: 6698590
    Abstract: A bottle (1) includes a base (2) and a continuous sidewall (3) extending upwardly from the periphery of the base (2) to a neck (4). The neck defines an opening (5) which is selectively blocked by a lid (6). Base (2) and sidewall (3) define a cavity for containing a suncream or the like which a person selectively applies to their skin to reduce the harmful effects of the sun's rays. The package also contains display means for providing a person with the indication of the intensity of UV radiation, or another ambient condition, incident upon the package.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: March 2, 2004
    Assignee: Crown Laboratories, Inc.
    Inventor: Peter John Moore
  • Unique system for constructing dental implant crowns and bridgework utilizing pre-fabricated parts
    Publication number: 20080171307
    Abstract: This is a system of prefabricated components of various materials that are physically, chemically and structurally compatible with one another and with various esthetic veneering materials used in the fabrication of fixed dental restorative and prosthetic devices. Due to the considerable expense and time generated by using external laboratories, there exists a need to provide a system for the production of non-metallic crown and bridge understructures utilizing, to the greatest extent possible, pre-fabricated components from on-site inventory.
    Type: Application
    Filed: January 8, 2008
    Publication date: July 17, 2008
    Inventor: William Gary Wilcox
  • Dental assembly and process for preparing a tooth prosthesis
    Patent number: 5681167
    Abstract: A dental assembly includes an implant having a tubular body portion which can be positively secured within a bore in a jawbone by an expander mechanism, and a two-piece abutment secured to the implant and having a collar which is incapable of rotation with respect thereto. In a related process for preparing a tooth prosthesis, a transfer sleeve is utilized in a process to replicate conditions in the mouth, including the configuration of the abutment assembly, in manufacturing a custom analog. A custom analog is cast into a stone mold to provide an exact duplicate of the mouth. From this stone mold a crown can be manufactured in a laboratory to precisely fit in the user's mouth over a customized abutment. A treatment crown sleeve may be utilized in connection with a provisional tooth.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: October 28, 1997
    Inventor: Sargon Lazarof
  • Process for preparing a tooth prosthesis for attachment to an abutment within a mouth of a patient
    Patent number: 5762500
    Abstract: A dental assembly includes an implant having a tubular body portion which can be positively secured within a bore in a jawbone by an expander mechanism, and a two-piece abutment secured to the implant and having a collar which is incapable of rotation with respect thereto. In a related process for preparing a tooth prosthesis, a transfer sleeve is utilized in a process to replicate conditions in the mouth, including the configuration of the abutment assembly, in manufacturing a custom analog. A custom analog is cast into a stone mold to provide an exact duplicate of the mouth. From this stone mold a crown can be manufactured in a laboratory to precisely fit in the user's mouth over a customized abutment. A treatment crown sleeve may be utilized in connection with a provisional tooth.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: June 9, 1998
    Inventor: Sargon Lazarof
  • Methods for making provisional and long-term dental crowns and bridges
    Publication number: 20080085493
    Abstract: The invention provides methods of making provisional and long-term dental restorations, particularly dental veneers, crowns and bridges. In one embodiment, the restoration can be fabricated indirectly by a dental laboratory. In another version, a dental practitioner can make the restoration chairside for a patient in a dental office. A polymerizable dental composite material, which is dimensionally shape-stable in its uncured state, is used to make the restoration. The material includes a polymerizable acrylic compound, polymerization initiator system capable of being activated by light or heat, and a filler material. The resulting dental restoration has good aesthetics, mechanical strength, and margins and contacts.
    Type: Application
    Filed: May 24, 2007
    Publication date: April 10, 2008
    Inventors: Benjamin Sun, Andrew Young, Andrew Lichkus
  • Orbital dental polishing device
    Publication number: 20030027511
    Abstract: Currently dental laboratories use a lathe for the polishing of the dental crown. Such lathes use a polishing disc brush mounted on a rotating shaft and which generally cannot polish the deeper parts of the surface of the appliance without wearing down the surrounding anatomy. The present device provides a brush which uses an orbital motoin to thereby better preserve the anatomy of the crown.
    Type: Application
    Filed: August 1, 2001
    Publication date: February 6, 2003
    Inventor: Timothy Tamio Nemoto
  • Prefabricated modular crown system
    Patent number: 4332564
    Abstract: Two preformed modules are manipulated and joined onto a natural tooth stump to constitute a crown which provides the combination of full facial esthetics with the utility and durability of a metal crown. Splinting of adjacent teeth and addition of pontic teeth is also accomplished at chairside in conjunction with a routine office-laboratory procedure.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: June 1, 1982
    Inventor: Raymond E. Lord
  • Orbital dental polishing device
    Patent number: 6679768
    Abstract: Currently dental laboratories use a lathe for the polishing of the dental crown. Such lathes use a polishing disc brush mounted on a rotating shaft and which generally cannot polish the deeper parts of the surface of the appliance without wearing down the surrounding anatomy. The present device provides a brush which uses an orbital motoin to thereby better preserve the anatomy of the crown.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: January 20, 2004
    Inventor: Timothy Tamio Nemoto
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