Patent US4496322A successfully refreshed from Google Patents.
US4496322A
Expired / Lapsed
US
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Benzoin antimicrobial dental varnishes
Assignee: 142116 ONTARIO Inc
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Filing: 1983-05-11
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Granted: 1985-01-29
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Expires: 2003-05-11
Abstract
Abstract A composition for treating dental infections, e.g. dental caries caused by Strep. mutans, comprises a varnish containing an antimicrobial agent such as chlorhexidine acetate and benzoin gum in an orally acceptable liquid. The composition can be painted on teeth, allowed to dry thereon to give a transparent, translucent or tooth colored film which is effectively invisible but provides sustained release of the antimicrobial agent to the site of infection over a period of at least four days. The film can be removed at will, e.g. by application of the liquid varnish base.
Inventors
- 👤 H. James Sandham
- 👤 Thomas E. Balanyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:20
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/13; A61K31/155; A61K6/00; A61K6/60; A61K6/69
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
97 words
A dental varnish composition suitable for painting onto teeth to combat oral infection, said composition consisting essentially of: an orally acceptable liquid vehicle; benzoin; and at least one dentally acceptable antimicrobial agent selected from the group consisting of erythromycin, chlorhexidine and salts thereof and compatible with the liquid vehicle and the benzoin; said composition being capable of drying to form a solid transparent, translucent or tooth colored coating on teeth to which it is applied and releasing said at least one antimicrobial agent over a sustained period of time into contact with infected sites on said teeth.
Claim 2
Dependent Claim
97 words
A dental varnish composition suitable for painting onto teeth to combat oral infection, said composition consisting essentially of: an orally acceptable liquid vehicle; benzoin; and at least one dentally acceptable antimicrobial agent selected from the group consisting of erythromycin, chlorhexidine and salts thereof and compatible with the liquid vehicle and the benzoin; said composition being capable of drying to form a solid transparent, translucent or tooth colored coating on teeth to which it is applied and releasing said at least one antimicrobial agent over a sustained period of time into contact with infected sites on said teeth.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein the liquid vehicle is ethanol.
Claim 4
Dependent Claim
24 words
The composition of claim 1 wherein the weight ratio of benzoin to dentally acceptable antimicrobial agent is in the approximate range 10:1 to 1:10.
Claim 5
Dependent Claim
13 words
The composition of claim 1 including a plurality of dentally acceptable antimicrobial agents.
Claim 6
Dependent Claim
12 words
The composition of claim 1 wherein the antimicrobial agent is chlorhexidine acetate.
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) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |