Patent US4990089A successfully refreshed from Google Patents.
US4990089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and material for brightening teeth
Assignee: Dunhall Pharmaceuticals Inc
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Filing: 1990-05-04
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Granted: 1991-02-05
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Expires: 2010-05-04
Abstract
Abstract There is disclosed a process and a material for brightening teeth. The process comprises the construction of a splint around the tooth or teeth to be brightened, followed by the insertion within the splint of a brightening agent selected from one of many peroxide groups. The splint is constructed so that the splint is relatively liquid tight to the gingiva. The brightening agent is periodically renewed and can be mixed with various other agents to increase the nascent oxygen release aerating factors. In one embodiment, the peroxide that is used is a 10% solution of carbamide peroxide mixed with a water free gel.
Inventors
- 👤 John R. Munro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:47
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/22; A61C; A61C19/00; A61C19/06; A61C19/063; A61C19/066; A61Q; A61Q11/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
61 words
The process of brightening teeth comprising the steps of: obtaining a substantially liquid tight splint to cover the tooth or teeth to be brightened; placing within said splint a brightener agent at the location within said splint associated with the tooth surfaces to be brightened; and placing the splint containing said brightener agent around the tooth or teeth to be brightened.
Claim 2
Dependent Claim
61 words
The process of brightening teeth comprising the steps of: obtaining a substantially liquid tight splint to cover the tooth or teeth to be brightened; placing within said splint a brightener agent at the location within said splint associated with the tooth surfaces to be brightened; and placing the splint containing said brightener agent around the tooth or teeth to be brightened.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein the brightener agent is a nonaqueous oral peroxy compound.
Claim 4
Dependent Claim
14 words
The process of claim 2 wherein said brightener agent is mixed with stannous fluoride.
Claim 5
Dependent Claim
29 words
The process of claim 2 where said oral peroxy compound is peroxyl gel mixed with peroxigel in the ratio of 3 milliliters of peroxyl to 1.2 ounces of peroxigel.
Claim 6
Dependent Claim
35 words
The process of claim 1 further comprising the steps of: periodically removing said splint: adding additional brightener agent; and replacing said splint containing said additional brightener agent around the tooth or teeth to be brightened.
Claim 7
Dependent Claim
49 words
The invention set forth in claim 5 wherein said periodically removing step includes the step of obtaining a fresh unused substantially airtight splint to cover the tooth or teeth to be brightened, and wherein said replacing step, includes the step of substituting said fresh splint for said removed splint.
Claim 8
Dependent Claim
73 words
The invention set forth in claim 1 where the splint obtaining step includes the steps of: making an impression of the tooth or teeth to be brightened, said impression including adjacent gingiva; molding said impression to create a mold of said tooth or teeth to be brightened; forming plastic tightly around said mold; and trimming said formed plastic to fit over said tooth or teeth to be brightened and over said adjacent gingiva.
Claim 9
Dependent Claim
19 words
The invention set forth in claim 7 wherein said trimmed plastic is between 0.01 inch and 0.1 inch thick.
Claim 10
Dependent Claim
13 words
The invention set forth in claim 7 wherein said trimmed plastic is transparent.
Claim 11
Dependent Claim
62 words
The use of a peroxy compound to bleach teeth, where the use consists of: bringing said peroxy compound into physical contact with each said tooth to be cleaned; creating a mechanical barrier around said peroxy compound after said physical contact is made, said mechanical barrier relying upon intimate contact with the gingiva adjacent the tooth for a substantially airtight and leakproof seal.
Claim 12
Dependent Claim
62 words
The use of a peroxy compound to bleach teeth, where the use consists of: bringing said peroxy compound into physical contact with each said tooth to be cleaned; creating a mechanical barrier around said peroxy compound after said physical contact is made, said mechanical barrier relying upon intimate contact with the gingiva adjacent the tooth for a substantially airtight and leakproof seal.
Claim 13
Dependent Claim
39 words
The use of a peroxy compound as set forth in claim 10 wherein physical contact is made with a plurality of teeth at the same time and wherein said mechanical barrier extends to all of said plurality of teeth.
Claim 14
Dependent Claim
33 words
The use of peroxy compound as set forth in claim 11 wherein said mechanical barrier contour provides means for allowing continued physical contact of different amounts of said peroxy compound for different teeth.
Claim 15
Dependent Claim
19 words
The use of a peroxy compound as set forth in claim 12 wherein said last mentioned means is adjustable.
Claim 16
Dependent Claim
81 words
The use of a peroxy compound as set forth in claim 10 wherein said mechanical barrier is a splint obtained by the steps of: making an impression of the tooth or teeth to be brightened, said impression including adjacent gingiva; molding said impression to create a mold of said tooth or teeth to be brightened; forming plastic tightly around said mold; and trimming said formed plastic to fit over said tooth or teeth to be brightened and over said adjacent gingiva.
Claim 17
Dependent Claim
18 words
The use of a peroxy compound as set forth in claim 14 wherein said trimmed plastic is transparent.
Claim 18
Dependent Claim
36 words
The use of a peroxy compound as set forth in claim 10 wherein said compound is a mixture of peroxyl gel and peroxigel in the ratio of 3 milliliters of peroxyl to 1.2 ounces of peroxigel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-04 | 1994-08-06 | 1995-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-04 | 1998-08-06 | 1999-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-04 | 2002-08-06 | 2003-02-05 | $7700.00 | Window Closed / Lapsed |