Patent US5409631A successfully refreshed from Google Patents.
US5409631A
Expired / Lapsed
US
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Dental bleaching compositions and methods for bleaching teeth surfaces
Assignee: Ultradent Products Inc
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Filing: 1991-11-22
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Granted: 1995-04-25
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Expires: 2011-11-22
Abstract
Abstract 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.
Inventors
- 👤 Dan E. Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:46
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8141; A61K8/8147; A61C; A61C19/00; A61C19/06; A61C19/063; A61C19/066; A61K6/00; A61K6/20; A61K8/19; A61K8/20; A61K8/21; A61K8/22; A61K8/30; A61K8/40; A61K8/42; A61K9/00; A61K9/0012; A61K9/0053; A61K9/0063; A61Q; A61Q11/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
192 words
A dental bleaching composition adapted to be loaded into a dental tray designed for placement over teeth such that the dental bleaching composition will contact tooth surfaces when the dental tray is placed over the teeth, said dental bleaching composition comprising: a quantity of dental bleaching agent that is physiologically compatible and capable of bleaching tooth surfaces in contact with said dental bleaching agent; and a matrix material into which the dental bleaching agent is dispersed, said matrix material including carboxypolymethylene or an equivalent thereto in a range from about 3.5% to about 12% by weight of the dental bleaching composition such that (a) said matrix material has sufficiently high viscosity and low solubility in saliva that the matrix material provides for the dental bleaching agent to be in contact with the tooth surfaces over a period of time greater than about 3 hours, thereby providing bleaching of the tooth surfaces, and such that (b) the matrix material is sufficiently sticky to retain and hold said dental tray in place over said teeth for a period of time greater than about 3 hours without any significant mechanical pressure from the dental tray.
Claim 2
Dependent Claim
192 words
A dental bleaching composition adapted to be loaded into a dental tray designed for placement over teeth such that the dental bleaching composition will contact tooth surfaces when the dental tray is placed over the teeth, said dental bleaching composition comprising: a quantity of dental bleaching agent that is physiologically compatible and capable of bleaching tooth surfaces in contact with said dental bleaching agent; and a matrix material into which the dental bleaching agent is dispersed, said matrix material including carboxypolymethylene or an equivalent thereto in a range from about 3.5% to about 12% by weight of the dental bleaching composition such that (a) said matrix material has sufficiently high viscosity and low solubility in saliva that the matrix material provides for the dental bleaching agent to be in contact with the tooth surfaces over a period of time greater than about 3 hours, thereby providing bleaching of the tooth surfaces, and such that (b) the matrix material is sufficiently sticky to retain and hold said dental tray in place over said teeth for a period of time greater than about 3 hours without any significant mechanical pressure from the dental tray.
Claim 3
Dependent Claim
33 words
A dental bleaching composition as defined in claim 1, wherein the carboxypolymethylene or equivalent thereto is included in a range from about 4.5% to about 10% by weight of the dental bleaching composition.
Claim 4
Dependent Claim
33 words
A dental bleaching composition as defined in claim 1, wherein the carboxypolymethylene or equivalent thereto is included in a range front about 6% to about 8% by weight of the dental bleaching composition.
Claim 5
Dependent Claim
47 words
A dental bleaching composition as defined in claim 1, wherein the dental bleaching composition includes a quantity of water and wherein the matrix material comprises carboxypolymethylene in a range from about 15% to about 35% by weight of the quantity of water in the dental bleaching composition.
Claim 6
Dependent Claim
47 words
A dental bleaching composition as defined in claim 1, wherein the dental bleaching composition includes a quantity of water and wherein the matrix material comprises carboxypolymethylene in a range from about 20% to about 30% by weight of the quantity of water in the dental bleaching composition.
Claim 7
Dependent Claim
36 words
A dental bleaching composition as defined in claim 1, comprising a sufficient quantity of a base to adjust the pH of the dental bleaching composition to within a pH range from about 5 to about 7.
Claim 8
Dependent Claim
33 words
A dental bleaching composition as defined in claim 1, wherein the dental bleaching agent comprises carbamide peroxide in a range from about 3% to about 20% by weight of the dental bleaching composition.
Claim 9
Dependent Claim
33 words
A dental bleaching composition as defined in claim 1, wherein the dental bleaching agent comprises carbamide peroxide in a range from about 4% to about 15% by weight of the dental bleaching composition.
Claim 10
Dependent Claim
33 words
A dental bleaching composition as defined in claim 1, wherein the dental bleaching agent comprises hydrogen peroxide in a range from about 2% to about 10% by weight of the dental bleaching composition.
Claim 11
Dependent Claim
38 words
A dental bleaching composition as defined in claim 1, wherein the dental bleaching composition includes a quantity of water having a concentration in a range from about 15% to about 40% by weight of the dental bleaching composition.
Claim 12
Dependent Claim
38 words
A dental bleaching composition as defined in claim 1, wherein the dental bleaching composition includes a quantity of glycerine having a concentration in a range from about 40% to about 60% by weight of the dental bleaching composition.
Claim 13
Dependent Claim
17 words
A dental bleaching composition as defined in claim 1, wherein the carboxypolymethylene comprises a pharmaceutical grade carboxypolymethylene.
Claim 14
Dependent Claim
20 words
A dental bleaching composition as defined in claim 1, wherein the dental bleaching composition is dispensed in unit dosage quantities.
References Cited (Backward Citations)
US767553A
Cited
US803474A
Cited
US1691735A
Cited
US1642653A
Cited
US1934688A
Cited
US2257709A
Cited
US2835628A
Cited
US3060935A
Cited
US3073300A
Cited
US3234942A
Cited
US3247844A
Cited
US3380446A
Cited
US3379193A
Cited
DE1489712A1
Cited
US3385291A
Cited
US3416527A
Cited
US3448738A
Cited
DE1566227A1
Cited
US3527218A
Cited
US3527219A
Cited
US3499844A
Cited
US3481329A
Cited
US3657413A
Cited
US3536069A
Cited
US3624909A
Cited
US3625215A
Cited
US3742942A
Cited
US3969499A
Cited
US3998945A
Cited
US4044762A
Cited
US4032627A
Cited
US3988433A
Cited
US3844286A
Cited
US3955281A
Cited
US4064628A
Cited
US4138814A
Cited
US4164940A
Cited
US4173219A
Cited
US4173505A
Cited
DE2848237A1
Cited
US4954487A
Cited
US4302441A
Cited
US4376628A
Cited
US4251507A
Cited
US4428373A
Cited
US4518721A
Cited
US4537778A
Cited
US4431631A
Cited
US4687663A
Cited
US4687663B1
Cited
US4983379A
Cited
US4528180A
Cited
US4849213A
Cited
US4522805A
Cited
US4971782A
Cited
US4560351A
Cited
US4568536A
Cited
US4592488A
Cited
US4592487A
Cited
US4939284A
Cited
US4983381A
Cited
EP0286766A1
Cited
US4661070A
Cited
US4770634A
Cited
US4696757A
Cited
US4812308A
Cited
US4839156A
Cited
US4839157A
Cited
US4788052A
Cited
US4980152A
Cited
US4895721A
Cited
US4902227A
Cited
US4990089A
Cited
US4968251A
Cited
US4988500A
Cited
EP0528007A1
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-04-24 | 1998-10-24 | 1999-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-24 | 2002-10-24 | 2003-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-24 | 2006-10-24 | 2007-04-25 | $7700.00 | Window Closed / Lapsed |