Dental abrading device and method
AssigneeMinnesota Mining and Manufacturing Company
InventorCharles J. Brix
Life of this patent
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Abstract
An abrading device comprising: A conformable elastomeric disc-shaped body having a thickness in the range of from about 0.15 to 0.4 millimeters and a Shore A hardness in the range of from about 50 to 75; wherein said body is adapted to be connected to a driving means; and An exposed abrasive layer supported on said elastomeric body; wherein said abrasive layer has thickness in the range of less than about 0.3 millimeters and wherein the diameter of said abrasive layer is from about 1 to 1.1 times the diameter of said elastomeric disc-shaped body.
Claims13
An abrading device comprising:
- a conformable elastomeric disc-shaped body having a thickness in the range of from about 0.15 to 0.4 millimeters and a Shore A hardness in the range of from about 50 to 75;
- wherein said body is adapted to be connected to a driving means;
- and
- an exposed abrasive layer supported on said elastomeric body;
- wherein said abrasive layer has a thickness less than about 0.3 millimeters and wherein the diameter of said abrasive layer is from about 1 to 1.1 times the diameter of said elastomeric disc-shaped body.
An abrading device comprising:
- a conformable elastomeric disc shaped body having a thickness of from about 0.3 to 0.7 millimeters and a Shore A hardness in the range of from about 70 to 90, wherein said body is adapted to be connected to a driving means;
- and
- an exposed abrasive layer supported on said elastomeric body, wherein said abrasive layer has a thickness less than about 0.3 millimeters and wherein the diameter of said abrasive layer is from about 1.1 to 1.3 times the diameter of said elastomeric disc shaped body.
A method for polishing a dental composite restorative comprising the steps of:
- providing an abrading device comprising (a) a conformable elastomeric disc-shaped body having a thickness in the range of from about 0.15 to 0.4 millimeters and a Shore A hardness in the range of from about 50 to 75;
- wherein said body is adapted to be connected to a driving means;
- and (b) an exposed abrasive layer supported on said elastomeric body;
- wherein said abrasive layer has a thickness less than about 0.3 millimeters and wherein the diameter of said abrasive layer is from about 1 to 1.1 times the diameter of said elastomeric disc-shaped body;
- and
- driving said abrading device by a driving means;
- and
- contacting said dental restorative with the exposed abrasive layer of said driven abrading device with a maximum force normal to said dental restorative of about 6 grams per square millimeter for a time sufficient to polish said restorative, wherein said abrading device limits the maximum amount of the force applied normal to said restorative to about 6 grams per square millimeter.
A method for polishing a dental composite restorative comprising the steps of:
- providing an abrading device comprising (a) a conformable elastomeric disc-shaped body having a thickness of from about 0.3 to 0.7 millimeters and a Shore A hardness in the range of from about 70 to 90, wherein said body is adapted to be connected to a driving means;
- and (b) an exposed abrasive layer supported on said elastomeric body, wherein said abrasive layer has a thickness less than about 0.3 millimeters and wherein the diameter of said abrasive layer is from about 1.1 to 1.3 times the diameter of said elastomeric disc-shaped body;
- and
- driving said abrading device by a driving means;
- and
- contacting said dental restorative with the exposed abrasive layer of said driven abrading device with a maximum force normal to said dental restorative of about 6 grams per square millimeter for a time sufficient to polish said restorative wherein said abrading device limits the maximum amount of the force applied normal to said restorative to about 6 grams per square millimeter.
Dependencies are inferred from the claim text.