Patents by Inventor William B. Dragan

William B. Dragan 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: 20160199272
    Abstract: A fluoride composition applied to teeth. The fluoride composition comprises microcrystalline wax, mineral oil, vitamin E, amorphous calcium phosphate or ACP, guar gum, and sodium fluoride. The amorphous calcium phosphate and sodium fluoride are released gradually and when dissolved in saliva form ionic fluoride and ionic calcium that aid in re-mineralization of the tooth enamel. Enhanced fluoride treatment is obtained relative to a conventional fluoride rinse. A similar composition may be used as a protective coating material to protect whitened or bleached teeth.
    Type: Application
    Filed: March 23, 2016
    Publication date: July 14, 2016
    Inventors: William B. DRAGAN, Pengguang YU
  • Patent number: 9301915
    Abstract: A protective coating material applied to whitened or bleached teeth. The protective coating material comprises microcrystalline wax, mineral oil, vitamin E, and amorphous calcium phosphate or ACP. The protective coating material covers the whitened or bleached tooth surface protecting it from staining thereby prolonging the whiteness of the teeth. The whitened or bleached damaged tooth enamel may also be strengthened or repaired.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: April 5, 2016
    Assignee: Centrix, Inc.
    Inventor: William B. Dragan
  • Publication number: 20150079010
    Abstract: A protective coating material applied to whitened or bleached teeth. The protective coating material comprises microcrystalline wax, mineral oil, vitamin E, and amorphous calcium phosphate or ACP. The protective coating material covers the whitened or bleached tooth surface protecting it from staining thereby prolonging the whiteness of the teeth. The whitened or bleached damaged tooth enamel may also be strengthened or repaired.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 19, 2015
    Inventor: William B. DRAGAN
  • Patent number: 8753613
    Abstract: A retraction material promoting both retraction and drying of the gingival sulcus around a tooth. The retraction material comprises an astringent and an absorbing or drying agent. The retraction material is placed with a syringe and capsule around the gingival sulcus prior to the taking of an impression in a dental procedure.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: June 17, 2014
    Assignee: Centrix, Inc.
    Inventor: William B. Dragan
  • Publication number: 20140087330
    Abstract: A retraction cord for use in a dental procedure for widening the gingival sulcus containing kaolin. The kaolin acts as a hemostatic agent and an absorber or hydrophilic agent to reduce bleeding and dry the gingival sulcus. A binder may be used to aid in retention of the kaolin on the fibers of the retraction cord. A lubricant or release agent may be used preventing blood clots from sticking to the retraction cord upon removal. Kaolin is affected and has no adverse side effects.
    Type: Application
    Filed: September 24, 2013
    Publication date: March 27, 2014
    Inventors: John J. DISCKO, William B. Dragan
  • Publication number: 20130273495
    Abstract: A method and a device for effecting the cordless retraction of the gingival sulcus tissue that includes a cap or dam to be fitted onto a tooth. The well of the cap is pre-filled with a predetermined amount of a flowable non-setting kaolin based retraction material having a heavy viscosity or putty consistency. The preloaded cap is fitted to a prepared tooth so that when pressure is applied onto the cap, the retraction material is displaced under pressure and forced to flow into the sulcus, causing the gingival tissue to retract away from the tooth to enlarge the gingival sulcus. An internal ridge aids in retaining the retraction material within the cap.
    Type: Application
    Filed: June 8, 2013
    Publication date: October 17, 2013
    Inventors: William B. Dragan, John J. Discko
  • Patent number: 8535056
    Abstract: A sheet of material having a central body portion with attached wings capable of folding towards each other on either side. The wings of the bite block fold toward each other along fold lines adjacent the central body portion and provide a structure for biting down upon for propping the mouth of a patient open during a dental procedure. A mirrored surface may be placed on the central body portion for improving visibility in the mouth. In a unilateral bite block embodiment, the unilateral bite block is placed in only one side of the mouth. In another quadrant embodiment a bite extension extends out of an opposing side of the patent's mouth and facilitates holding the patient's mouth open. The bite block may be made inexpensively and is disposable.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: September 17, 2013
    Assignee: Centrix, Inc.
    Inventors: William B. Dragan, Cotsworth P. Fishburne, Jr.
  • Patent number: 8470905
    Abstract: A method and a device for effecting the cordless retraction of the gingival sulcus tissue that includes a dam shaped to be fitted onto a tooth. In one embodiment, the well of the dam is pre-filled with a predetermined amount of a flowable retraction material having a heavy viscosity or putty consistency. In another embodiment a hydrophilic material is added. The preloaded tooth dam is fitted to a prepared tooth so that when pressure is applied onto the tooth dam, the retraction material is displaced under pressure and forced into the sulcus, causing the gingival tissue to retract away from the tooth to enlarge the gingival sulcus. In another embodiment the cap is filled with a dilatant material. In another embodiment, the cap is filled with an impregnated compressible porous material. In yet another embodiment, the cap is pre-dosed with an astringent or hemostatic agent.
    Type: Grant
    Filed: May 15, 2011
    Date of Patent: June 25, 2013
    Assignee: Centrix, Inc.
    Inventors: William B. Dragan, John J. Discko
  • Publication number: 20130149665
    Abstract: A non-porous dental wedge having a surface coating of a material for aiding a dental procedure. A thin coating of an adhesive and particles having a particle size less than 200 microns is placed on the surface of the non-porous dental wedge. The material is preferable an astringent. The non-porous dental wedge is resistant to compression and the thin surface coating with small material particle size facilitates rapidly disperses the material during a dental procedure.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 13, 2013
    Inventor: William B. DRAGAN
  • Patent number: 8182264
    Abstract: A sheet of material having a central body portion with attached wings capable of folding towards each other on either side. The wings of the bite block fold toward each other along fold lines adjacent the central body portion and provide a structure for biting down upon for propping the mouth of a patient open during a dental procedure. A mirrored surface may be placed on the central body portion for improving visibility in the mouth. In a unilateral bite block embodiment, the unilateral bite block is placed in only one side of the mouth. The bite block may be made inexpensively and is disposable.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: May 22, 2012
    Assignee: Centrix, Inc.
    Inventors: William B. Dragan, Cotsworth P. Fishburne, Jr.
  • Publication number: 20120088205
    Abstract: A sheet of material having a central body portion with attached wings capable of folding towards each other on either side. The wings of the bite block fold toward each other along fold lines adjacent the central body portion and provide a structure for biting down upon for propping the mouth of a patient open during a dental procedure. A mirrored surface may be placed on the central body portion for improving visibility in the mouth. In a unilateral bite block embodiment, the unilateral bite block is placed in only one side of the mouth. In another quadrant embodiment a bite extension extends out of an opposing side of the patent's mouth and facilitates holding the patient's mouth open. The bite block may be made inexpensively and is disposable.
    Type: Application
    Filed: October 17, 2011
    Publication date: April 12, 2012
    Inventors: William B. DRAGAN, Cotsworth P. FISHBURNE, JR.
  • Patent number: 8118595
    Abstract: A rolled compression cap having a central bore. The rolled compression cap has adjacent layers that slide or telescope to conform to the prepared tooth and to apply more direct mechanical pressure to the interface between the prepared tooth and the gingiva. The gingiva or gum retracts from the tooth forming or widening a gingival sulcus. This improves the preparation of the tooth for taking an impression and fitting a crown or cap. In one embodiment, a rolled compression cap is pre-dosed or soaked with an astringent material or retraction agent. In another embodiment, the central bore of the rolled compression cap is filled with a paste-like or gel material containing an astringent or hemostatic agent.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: February 21, 2012
    Assignee: Centrix, Inc.
    Inventors: John J. Discko, Jr., William B. Dragan
  • Publication number: 20110275028
    Abstract: A method and a device for effecting the cordless retraction of the gingival sulcus tissue that includes a dam shaped to be fitted onto a tooth. In one embodiment, the well of the dam is pre-filled with a predetermined amount of a flowable retraction material having a heavy viscosity or putty consistency. In another embodiment a hydrophilic material is added. The preloaded tooth dam is fitted to a prepared tooth so that when pressure is applied onto the tooth dam, the retraction material is displaced under pressure and forced into the sulcus, causing the gingival tissue to retract away from the tooth to enlarge the gingival sulcus. In another embodiment the cap is filled with a dilatant material. In another embodiment, the cap is filled with an impregnated compressible porous material. In yet another embodiment, the cap is pre-dosed with an astringent or hemostatic agent.
    Type: Application
    Filed: May 15, 2011
    Publication date: November 10, 2011
    Inventors: William B. DRAGAN, John J. DISCKO
  • Publication number: 20110123957
    Abstract: An applicator principally for use in the dental profession, for the placement of different materials in a post hole as may be required. The applicator includes an elongated handle having an applicating end portion formed as a brush and/or a flocked applicating end portion. The flock may extend from the distal end a predetermined longitudinal distance over an extended portion. The applicator is also provided with a hinging arrangement adjacent the opposed applicating end portions whereby the applicating end portions may be angularly bent relative to the elongated handle at the option of the user.
    Type: Application
    Filed: February 3, 2011
    Publication date: May 26, 2011
    Inventors: William B. DRAGAN, John J. Discko
  • Patent number: 7942669
    Abstract: A method and a device for effecting the cordless retraction of the gingival sulcus tissue that includes a dam shaped to be fitted onto a tooth. In one embodiment, the well of the dam is pre-filled with a predetermined amount of a flowable retraction material having a heavy viscosity or putty consistency. The preloaded tooth dam is fitted to a prepared tooth so that when pressure is applied onto the tooth dam, the retraction material is displaced under pressure and forced into the sulcus, causing the gingival tissue to retract away from the tooth to enlarge the gingival sulcus. In another embodiment the cap is filled with a dilatant material. In another embodiment, the cap is filled with an impregnated compressible porous material. In yet another embodiment, the cap is pre-dosed with an astringent or hemostatic agent.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: May 17, 2011
    Assignee: Centrix, Inc.
    Inventors: William B. Dragan, John J. Discko
  • Patent number: 7882588
    Abstract: An applicator principally for use in the dental profession, for the placement of different materials as may be required. The applicator includes an elongated handle having an applicating end portion formed at the opposed ends thereof which may be either of like or unlike construction, i.e. formed as a brush and/or a flocked applicating end portion. The flock may extend from the distal end a predetermined longitudinal distance over an extended portion. Intermediate the opposed applicating end portion, the elongated handle is provided with a circumscribing groove to define a frangible area by which the user, at his or her option, can cleanly sever the applicator handle to form two separate and distinct applicators. The applicator is also provided with a hinging arrangement adjacent the opposed applicating end portions whereby the applicating end portions may be angularly bent relative to the elongated handle at the option of the user.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: February 8, 2011
    Assignee: Centrix, Inc.
    Inventors: William B. Dragan, John J. Discko
  • Publication number: 20100304324
    Abstract: A sheet of material having a central body portion with attached wings capable of folding towards each other on either side. The wings of the bite block fold toward each other along fold lines adjacent the central body portion and provide a structure for biting down upon for propping the mouth of a patient open during a dental procedure. A mirrored surface may be placed on the central body portion for improving visibility in the mouth. In a unilateral bite block embodiment, the unilateral bite block is placed in only one side of the mouth. The bite block may be made inexpensively and is disposable.
    Type: Application
    Filed: May 25, 2010
    Publication date: December 2, 2010
    Inventors: William B. Dragan, cotsworth P. Fishburne, JR.
  • Publication number: 20100255443
    Abstract: A retraction material promoting both retraction and drying of the gingival sulcus around a tooth. The retraction material comprises an astringent and an absorbing or drying agent. The retraction material is placed with a syringe and capsule around the gingival sulcus prior to the taking of an impression in a dental procedure.
    Type: Application
    Filed: April 2, 2010
    Publication date: October 7, 2010
    Inventor: William B. Dragan
  • Patent number: D642267
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: July 26, 2011
    Assignee: Centrix, Inc.
    Inventor: William B. Dragan
  • Patent number: D666722
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: September 4, 2012
    Assignee: Centrix, Inc.
    Inventor: William B. Dragan