Dan Erwin Fischer
Dentist in Sandy, UT

2008021, Sep 4, 2008

Mar 27, 2008

12/056609

Paul Lewis - Midvale UT, US
Barry L. Hobson - Grantsville UT, US
Dan E. Fischer - Sandy UT, US

Ultradent Products, Inc. - South Jordan UT

A61C 5/02, B23P 13/00

433102, 298961

A method of manufacturing endodontic files involves a chemical milling process to yield endodontic files having a desired taper and/or degree of sharpness. The process involves the steps of (a) forming helical cutting edges in the cutting portion of the metallic rod; and (b) chemically milling the cutting portion of the rod so as to sharpen and/or taper the cutting portion. The rod may be formed of any desirable metallic material, for example stainless steel or a nickel-titanium alloy. The cutting edges may be formed by torsioning, cutting, grinding, machining, laser micromachining, or grit blasting.

5425641, Jun 20, 1995

Jul 27, 1993

8/097873

Dan E. Fischer - Sandy UT

Ultradent Products, Inc. - Jordan UT

A61C 504

433226

Dental compositions used in sealing pits and fissures in tooth enamel to aid in the prevention of dental caries are disclosed, along with methods for their use. The enamel is cleaned and prepared using conventional methods, etched with either aqueous phosphoric acid or citric acid, treated with a drying/priming agent containing either anhydrous ethyl alcohol or anhydrous acetone and the adduct of N(p-tolyl)glycine and glycidyl methacrylate ("NTG-GMA"), and sealed with a resinous sealing material which includes 2,2-bis(hydroxyphenyl)propane diglycidylmethacrylate. The sealing material may also include other additives such as filler materials, thinning agents, hydrophilic resins, and photoinitiators. The compositions may be adapted to be applied by means of a syringe delivery system.

5445523, Aug 29, 1995

Sep 3, 1993

8/117398

Dan E. Fischer - Sandy UT
David V. Fischer - Sandy UT

Ultradent Products, Inc. - South Jordan UT

A61C 504

433 90

Syringe assembly apparatus and associated methods are provided for use in dispensing viscous materials, such as dental compositions, in a controlled fashion. The preferred embodiment of the syringe assembly of the present invention includes a syringe body of conventional fashion, having a passageway therethrough and a discharge port communicating with the passageway. An adapter member is provided which nests within the syringe body passageway, the adapter member having a bore passing through the length thereof for receiving a viscous material to be dispensed. When the adapter is nested within the passageway of the syringe body, the bore communicates with the discharge port of the syringe body. An important feature of the invention is that the bore has a diameter substantially the same as the diameter of the discharge port at the location where the discharge port communicates with the bore. The assembly of the present invention also includes a plunger member for ejecting viscous material contained within the bore through the discharge port of the syringe body.

5269684, Dec 14, 1993

Aug 31, 1992

7/940204

Dan E. Fischer - Sandy UT

Ultradent Products, Inc. - South Jordan UT

A61C 504

433 90

An apparatus for applying coatings to various surface types. The apparatus includes a dispenser for holding a quantity of the coating material and a delivery tip having adjustable bristles at one end. The bristles are slidably secured in a spiral passageway formed by a helical ridge inside the delivery tip, thereby allowing the coating material to be continuously applied without the need to stop the procedure and rewet the applicator. The applicator permits accurate control of the amount of coating material applied to the surface. In this way, the surface receives neither an excessive nor an insufficient amount of the coating material. Moreover, the bristles may be pushed in to permit the coating material to be applied to a small, irregular surface, such as pits and fissures, or pulled out to permit the bristles to fan out for application to broad surface areas. Delivery of relatively viscous coating materials is made easier by providing the spiral passageway around the bristles so that the coating material does not have to flow through the bristles.

2010022, Sep 9, 2010

Mar 5, 2009

12/398227

Dan E. Fischer - Sandy UT, US

ULTRADENT PRODUCTS, INC. - South Jordan UT

A61K 33/40

424616

An anti-microbial and/or anti-viral composition for use in disinfecting an oral tissue during a dental procedure includes at least one dental operative material that is allowed to contact the oral tissue for a period of time between about 2 seconds and about 1 month and an effective amount of an anti-viral and/or anti-bacterial agent included in or mixed with the dental operative material so as to impart an anti-bacterial and/or anti-viral effect at or near a site of administration in oral tissue. The anti-viral and/or anti-bacterial agent at least partially at least partially contributes to a two-log (or three-log, four-log, or five-log) reduction in viral and/or bacterial activity at or near a site of administration. The compositions protect a dental practitioner and/or other patient from being infected by a communicable disease carried by a treated patient.

5770105, Jun 23, 1998

Sep 30, 1996

8/722397

Dan E. Fischer - Sandy UT

Ultradent Products, Inc. - South Jordan UT

C01B 1500, A61K 720, A61C 500

25218625

The present invention discloses high viscosity sustained release dental compositions, such as tooth bleaching or fluoride compositions, for treating tooth surfaces. For maximum results, an improved dental tray having reservoirs for holding the dental composition adjacent the desired tooth surfaces is preferably used in combination with the sustained release dental composition. The sustained release dental compositions include a high carboxypolymethylene concentration which results in very high viscosity. The high level of carboxypolymethylene makes dilution of the dental compositions from saliva difficult and time consuming so that the compositions stay within the tray reservoirs, thereby providing sustained release. The concentrated carboxypolymethylene adds a unique tackiness to the dental composition which helps retain and seal the soft tray material against the patient's teeth.

6048202, Apr 11, 2000

Nov 9, 1998

9/189006

Steven D. Jensen - Midvale UT
Dan E. Fischer - Sandy UT

Ultradent Products, Inc. - South Jordan UT

A61C 514

433136

The polymerizable dental isolation barrier has a monomer and an initiator. The barrier composition has at least one additive including a polymer strength reducer, a wet tissue adherence accentuator, and a reflective material The polymer strength reducer is an organic compound that prevents complete polymerization. The tissue adherence accentuator enables the barrier to adhere to a dental substrate ever after polymerization. The reflective material lowers the reaction rate and lowers the production of excess heat to reduce patient discomfort and to avoid tissue damage.

6142781, Nov 7, 2000

Apr 22, 1998

9/064457

Dan E. Fischer - Sandy UT

Ultradent Products, Inc. - South Jordan UT

A61C 700

433149

Improved dental instruments have grasping ends which are particularly adapted for grasping dental wedges which have heads multiple flat surfaces or necks. The instruments can also be used with wedges having necks with multiple flat surfaces. Each instrument has a grasping end with flat grasping surfaces which are configured to be mated with the flat gripping surfaces of the head or neck of wedge. The instruments adapted for grasping dental wedges include tweezers, pliers and wedges.

5890901, Apr 6, 1999

Apr 22, 1998

/064381

Dan E. Fischer - Sandy UT
Bruce S. McLean - West Jordan UT

Ultradent Products, Inc. - South Jordan UT

A61C 700

433149

An improved dental wedge has a body coupled to a head by a neck. The neck is configured to be smaller in diameter than the proximal end of the body and the distal end of the head. The neck preferably has a plurality of flat surfaces extending about a circumference of the neck. Because of the neck, the wedge includes a groove configured to receive an instrument to (i) push against the proximal end of the body, thereby pushing the wedge into a desired location; and (ii) to pull against the distal end of the head to pull the wedge from a desired location. The neck may also have a textured surface or be coated with a tacky material.

5816804, Oct 6, 1998

Jan 19, 1996

8/589122

Dan E. Fischer - Sandy UT

Ultradent Products, Inc. - South Jordan UT

A61C 504, A46B 1102

433 90

A delivery tip for use on a delivery device for applying a dental composition to tooth surfaces includes a tubular member having a proximal end and a distal end. The proximal end of the tubular member is coupled to the delivery device. A plurality of fibrous bristles are disposed on an outer periphery at the distal end of the tubular member. The fibrous bristles can be used in an agitating action to remove entrapped air bubbles from the applied composition such as an impression material. The fibrous bristles on the delivery tip can also be used to coat and spread the composition on tooth surfaces. With the fibrous bristles attached to the outer periphery at the distal end of the delivery tip, the composition can be delivered through the passageway in the tubular member without interference from the bristles.