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Method for finishing and fitting dental restorations and an abrasive material for doing same

a dental restoration and abrasive material technology, applied in dental tools, dental surgery, manufacturing tools, etc., can solve problems such as initial irregular surfaces, and achieve the effect of rapid removal of dental restoration materials and difficult finishing and smoothing

Inactive Publication Date: 2011-04-07
POLLASKY ANTHONY DAVID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]The abrasive material useful in the invention may be subjected to high and / or low temperature treatment. Optional performance enhancing surface treatments may be applied to the protrusions and the base surface to improve abrasive performance, increase abrasive endurance, aid in non-loading characteristics due to the lubricity of certain coatings, and reduce surface porosity.
[0011]The method of the present invention is particularly effective in finishing and fitting dental restorations. A strip or disk useful in the method of the present invention can provide both rapid removal of dental restoration material as well as providing the necessary finishing and smoothing whether the dental restoration material is metal such as gold, gold alloy, titanium, a cobalt-chromium alloy or nickel-chrome alloy; porcelain or porcelain fused to metal; or a composite resin.
[0012]The method of the present invention is also especially useful with dental composite resins such as, for example, a resin-based matrix of a bisphenol A-glycidyl methacrylate (BISMA), resin-like urethane dimethacrylate (UDMA), and an inorganic filler such as silicon dioxide silica with chemical initiators and catalysts. Engineered filler glasses and glass ceramics are used to provide such composites with wear resistance and translucency, the presence of which can make finishing and smoothing difficult.

Problems solved by technology

Also, when dentists use dental restorations such as fitting bridges and crowns or applying onlays or inlays, or fillings, irregular surfaces initially result.

Method used

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  • Method for finishing and fitting dental restorations and an abrasive material for doing same
  • Method for finishing and fitting dental restorations and an abrasive material for doing same
  • Method for finishing and fitting dental restorations and an abrasive material for doing same

Examples

Experimental program
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Effect test

example 1

[0069]A sheet of 420 spring tempered stainless steel having a thickness of about 0.032 inch was cleaned and passivated. A photoresist solution was coated onto the passivated stainless steel and dried. A mask having pattern as shown in FIG. 9B was applied over the photoresist.

[0070]The stainless steel / photoresist / mask composite was exposed to 60 millijoules of light to effect imaging of the photoresist. The unexposed, uncrosslinked photoresist was then removed by rinsing with a developer solution. The stainless steel having the photoresist pattern thereon was re-exposed to 100 millijoules light to ensure adherence of the photo resist to the stainless steel during etching.

[0071]The stainless steel was etched to a depth of about 0.012 inch using 36 Baume ferric chloride solution at a temperature of 145° F. The resulting etched sheet was rinsed with water and the remaining photoresist was removed using an aqueous potassium hydroxide stripping solution.

[0072]The etched stainless steel wa...

example 2

[0075]A sheet of spring tempered stainless steel having a thickness of about 0.032 inch was cleaned and passivated. A photoresist solution was coated onto the passivated stainless steel and dried. A mask having pattern like that of FIG. 8B was applied over the photoresist.

[0076]The stainless steel / photoresist / mask composite was exposed to 60 millijoules of light to effect imaging of the photoresist. The unexposed, uncrosslinked photoresist was then removed by rinsing with a developer solution. The stainless steel having the photoresist pattern thereon was re-exposed to 100 millijoules light to ensure adherence of the photo resist to the stainless steel during etching.

[0077]The stainless steel was etched to a depth of about 0.009 inch using 36 Baume ferric chloride solution at a temperature of 145° F. The resulting etched sheet was rinsed with water and the remaining photoresist was removed using an aqueous potassium hydroxide stripping solution.

[0078]The etched stainless steel was c...

example 3

[0081]A sheet of 420 spring tempered stainless steel having a thickness of about 0.020 inch was cleaned and passivated. A photoresist solution was coated onto the passivated stainless steel and dried. A mask having pattern like that of FIG. 10B was applied over the photoresist.

[0082]The stainless steel / photoresist / mask composite was exposed to 60 millijoules of light to effect imaging of the photoresist. The unexposed, uncrosslinked photoresist was then removed by rinsing with a developer solution. The stainless steel having the photoresist pattern thereon was re-exposed to 100 millijoules light to ensure adherence of the photo resist to the stainless steel during etching.

[0083]The stainless steel was etched to a depth of about 0.003 inch using 36 Baume ferric chloride solution at a temperature of 145° F. The resulting etched sheet was rinsed with water and the remaining photoresist was removed using an aqueous potassium hydroxide stripping solution.

[0084]The etched stainless steel ...

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Abstract

A method for finishing and fitting dental restorations is provided. The method comprises the steps of contacting the restoration surface with a stainless steel abrasive material and working the stainless steel abrasive material against the restoration surface to shape and smooth the restoration surface. The stainless steel abrasive material comprises a base having a plurality of pyramidal shapes protruding therefrom, a portion of the protrusions having a substantially polygonal base and triangular sides which meet at an apex which substantially forms a point, hereinafter pyramidal protrusions, and a portion of the protrusions having a substantially polygonal base and substantially trapezoidal sides with the portion thereof distant from the base surface forming a plateau such that the protrusions are substantially butte-like in shape, hereinafter termed butte protrusions, the protrusions providing intermixing cutting and planing edges, the ratio of the pyramidal protrusions to the butte protrusions ranging from 100:0 to 0:100. Also provided is the stainless steel abrasive material used to carry out the method.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a method for finishing and fitting dental restorations such as, for example, dentures, bridges, crowns, onlays and inlays and smoothing fillings. The present invention also relates to an abrasive dental strip for finishing and fitting dentures, bridges, crowns, onlays and inlays and smoothing fillings.BACKGROUND OF THE INVENTION[0002]Typically dental restorations such as dentures, bridges, crowns, inlays and onlays are formed in molds which may leave irregular surfaces on the restorations. Also, when dentists use dental restorations such as fitting bridges and crowns or applying onlays or inlays, or fillings, irregular surfaces initially result. It is particularly important with bridges, crowns, onlays, inlays and fillings that proper contouring of the material occur so that the margins and contouring between the bridge, crown, onlay, inlay or filling and the natural tooth material remaining be precise to prevent decay at ...

Claims

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Application Information

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IPC IPC(8): B24B1/00
CPCB24D99/00A61C3/06B24D2203/00
Inventor POLLASKY, ANTHONY DAVID
Owner POLLASKY ANTHONY DAVID
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