US5722832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and material for taking dental impressions
Assignee: Individual
•
Filing: 1996-12-02
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Granted: 1998-03-03
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Expires: 2016-12-02
Abstract
Abstract A dental impression technique is disclosed which actually includes the presents of air pockets within the dental impression material. The technique describes including small sponges into the tray impression material while mixing base and catalyst. Air pockets are thus created evenly within the impression material. Air pockets may also exist by mixing air into material, small premanufactured spheres, or by chemical reaction.
Inventors
- 👤 Dennis J. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:03
CPC Classifications
A; A61; A61C; A61C9/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
36 words
A method of forming dental impression material comprising the steps of, mixing base ingredients needed to form the impression material, and adding a substance that will create air pockets within the impression material when in use.
Claim 2
Independent Claim
36 words
A method of forming dental impression material comprising the steps of, mixing base ingredients needed to form the impression material, and adding a substance that will create air pockets within the impression material when in use.
Claim 3
Dependent Claim
15 words
A method as claimed in claim 1 and further including; the added substance is sponge.
Claim 4
Dependent Claim
17 words
A method as claimed in claim 1 and further including; the added substance is expanded dental floss.
Claim 5
Dependent Claim
18 words
A method as claimed in claim 1 and further including; the added substance has the shape of spheres.
Claim 6
Independent Claim
118 words
A method of taking an impression of teeth comprising the steps of; preparing a tooth for an impression, syringing substantially porosity free impression material against the tooth, placing impression material containing air pockets in a dental impression tray, and placing the tray with the porous impression material over the tooth and the porosity free impression material, whereby, an impression of the tooth is made that has substantially porosity free impression material in the area next to the tooth, where it is desirable to obtain as smooth an impression as possible, and has an outer layer of impression material containing a significant amount of air pockets, so as to allow the impression material to flex without distorting during use.
Claim 7
Independent Claim
118 words
A method of taking an impression of teeth comprising the steps of; preparing a tooth for an impression, syringing substantially porosity free impression material against the tooth, placing impression material containing air pockets in a dental impression tray, and placing the tray with the porous impression material over the tooth and the porosity free impression material, whereby, an impression of the tooth is made that has substantially porosity free impression material in the area next to the tooth, where it is desirable to obtain as smooth an impression as possible, and has an outer layer of impression material containing a significant amount of air pockets, so as to allow the impression material to flex without distorting during use.
Claim 8
Dependent Claim
108 words
A dental impression material comprising; a layer of substantially porosity free material which will contact the dental surface that an impression is being taken of in use, and a layer of material having a significant amount of air pockets formed over said substantially porosity free material, whereby, an impression of the tooth is made, it will have substantially porosity free impression material in the area next to the tooth, where it is desirable to obtain as smooth an impression as possible, and an outer layer of impression material containing a significant amount of air pockets, so as to allow the impression material to flex without distorting during use.
Claim 9
Dependent Claim
108 words
A dental impression material comprising; a layer of substantially porosity free material which will contact the dental surface that an impression is being taken of in use, and a layer of material having a significant amount of air pockets formed over said substantially porosity free material, whereby, an impression of the tooth is made, it will have substantially porosity free impression material in the area next to the tooth, where it is desirable to obtain as smooth an impression as possible, and an outer layer of impression material containing a significant amount of air pockets, so as to allow the impression material to flex without distorting during use.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-02 | 2001-09-01 | 2002-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-02 | 2005-09-01 | 2006-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-02 | 2009-09-01 | 2010-03-03 | $7700.00 | Window Closed / Lapsed |