US5234342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sustained release method for treating teeth surfaces
Assignee: Ultradent Products Inc
•
Filing: 1991-06-20
•
Granted: 1993-08-10
•
Expires: 2011-06-20
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
2026-11-09 20:18
CPC Classifications
A; A61; A61C; A61C19/00; A61C19/06; A61C19/063; A61C19/066; A61K; A61K6/00; A61K6/20; A61K6/90; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61K8/21; A61K8/22; A61K8/30; A61K8/40; A61K8/42; A61K8/72; A61K8/81; A61K8/8141; A61K8/8147; A61K9/00; A61K9/0012; A61K9/0053; A61K9/0063; A61Q; A61Q11/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
194 words
A method for bleaching a patient's teeth comprising: (a) obtaining a dental tray configured to cover a patient's teeth surfaces to be bleached and configured to hold a quantity of sustained release dental bleaching composition; (b) placing a quantity of sustained release dental bleaching composition within the dental tray said sustained release dental bleaching composition comprising: a quantity of sustained release dental bleaching agent capable of bleaching vital tooth surfaces in contact with said sustained release dental bleaching agent; and a matrix material into which the sustained release dental bleaching agent is dispersed, said matrix material including carboxypolymethylene in the range from about 3.5% to about 12% by weight of the sustained release dental bleaching composition; (c) positioning the dental tray over the patient's teeth surfaces such that a portion of the sustained release dental bleaching agent is in contact with the patient's teeth surfaces to be bleached; (d) allowing the dental tray to remain positioned over the patient's teeth surfaces, said sustained release dental bleaching agent remaining active during a substantial time while the dental tray is positioned over the patient's teeth surfaces; and (e) removing the dental tray from the patient's teeth.
Claim 2
Independent Claim
194 words
A method for bleaching a patient's teeth comprising: (a) obtaining a dental tray configured to cover a patient's teeth surfaces to be bleached and configured to hold a quantity of sustained release dental bleaching composition; (b) placing a quantity of sustained release dental bleaching composition within the dental tray said sustained release dental bleaching composition comprising: a quantity of sustained release dental bleaching agent capable of bleaching vital tooth surfaces in contact with said sustained release dental bleaching agent; and a matrix material into which the sustained release dental bleaching agent is dispersed, said matrix material including carboxypolymethylene in the range from about 3.5% to about 12% by weight of the sustained release dental bleaching composition; (c) positioning the dental tray over the patient's teeth surfaces such that a portion of the sustained release dental bleaching agent is in contact with the patient's teeth surfaces to be bleached; (d) allowing the dental tray to remain positioned over the patient's teeth surfaces, said sustained release dental bleaching agent remaining active during a substantial time while the dental tray is positioned over the patient's teeth surfaces; and (e) removing the dental tray from the patient's teeth.
Claim 3
Dependent Claim
65 words
A method for bleaching a patient's teeth as defined in claim 1, wherein the step of obtaining a dental tray further comprises obtaining a dental tray constructed with reservoirs for holding dental bleaching agent such that when the dental tray is positioned over the patient's teeth surfaces, the dental bleaching agent within the reservoirs is in contact with the patient's teeth surfaces to be bleached.
Claim 4
Dependent Claim
22 words
A method for bleaching a patient's teeth as defined in claim 1, further comprising the step of repeating steps (b) through (e).
Claim 5
Dependent Claim
53 words
A method for bleaching a patient's teeth as defined in claim 1, wherein the dental tray remains positioned over a patient's teeth for a period of time greater than about 5 hours and wherein the sustained release dental bleaching agent remains active while the dental tray is positioned over the patient's teeth surfaces.
Claim 6
Dependent Claim
53 words
A method for bleaching a patient's teeth as defined in claim 1, wherein the dental tray remains positioned over a patient's teeth for a period of time greater than about 8 hours and wherein the sustained release dental bleaching agent remains active while the dental tray is positioned over the patient's teeth surfaces.
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
US4528180A
Cited
US4849213A
Cited
US4687663B1
Cited
US4983379A
Cited
US4522805A
Cited
US4971782A
Cited
US4560351A
Cited
US4568536A
Cited
US4592488A
Cited
US4592487A
Cited
US4939284A
Cited
EP0286766A1
Cited
US4983381A
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
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-09 | 1997-02-08 | 1997-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-09 | 2001-02-08 | 2001-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-09 | 2005-02-08 | 2005-08-10 | $7700.00 | Window Closed / Lapsed |