US5032388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preventing tartar formation
Assignee: Individual
•
Filing: 1988-09-19
•
Granted: 1991-07-16
•
Expires: 2008-09-19
Abstract
Abstract Tartar formation on teeth is prevented with compositions of a sodium salt ethylenediaminetetraacetic acid having a pH between about 5.5 and 9.0 in a carrier which permits application to the teeth. Aqueous solution may be used for this purpose as well as toothpaste compositions.
Inventors
- 👤 Matti H. A. Tikkanen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:53
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61Q; A61Q11/00; A61K2800/00; A61K2800/40; A61K2800/51
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
88 words
Method of preventing the formation of tartar on teeth, which comprises contacting teeth from which tartar has previously been removed with a sodium slat of ethylenediaminetetraaetic acid in an amount sufficient to complex with calcium ions present in the mouth about the teeth and being at a pH of about 5.5-9.0 for a time sufficient for said sodium salt of ehtylenediaminetetraaetic acid to complex any calcium ions present in the mouth about the teeth and thus prevent the formation of phosphate nuclei necessary for the formation of tartar.
Claim 2
Dependent Claim
88 words
Method of preventing the formation of tartar on teeth, which comprises contacting teeth from which tartar has previously been removed with a sodium slat of ethylenediaminetetraaetic acid in an amount sufficient to complex with calcium ions present in the mouth about the teeth and being at a pH of about 5.5-9.0 for a time sufficient for said sodium salt of ehtylenediaminetetraaetic acid to complex any calcium ions present in the mouth about the teeth and thus prevent the formation of phosphate nuclei necessary for the formation of tartar.
Claim 3
Dependent Claim
15 words
Method according to claim 1 wherein the contact is at a pH of about 6.5-8.5.
Claim 4
Dependent Claim
15 words
The method of claim 2, wherein the contact is at a pH of about 6.7-8.
Claim 5
Dependent Claim
15 words
Method according to claim 1 wherein the contact is at a pH of about 7-8.
Claim 6
Dependent Claim
16 words
The method of claim 1, wherein the sodium salt of ethylenediaminetetraacetic acid si disodium ethylenediaminetetraacetic acid.
Claim 7
Dependent Claim
18 words
Method of claim 1, wherein said sodium salt of ethylenediaminetetraacetic acid contacts the teeth while in aqueous solution.
Claim 8
Dependent Claim
21 words
Method of claim 6, wherein the solution comprises about 1 to 20% by weight of said sodium slat of ehtylenediaminetetraaetic acid.
Claim 9
Dependent Claim
19 words
Method of claim 7, wherein the solution comprises about 2-15% by weight of said sodium salt of ethylenediaminetetraacetic acid.
Claim 10
Dependent Claim
19 words
Method of claim 8, wherein said solution comprises about 5-7% by weight of said sodium salt of ehtylenediaminetetraaetic acid.
Claim 11
Dependent Claim
21 words
Method of claim 1, wherein said sodium salt of ethylenediaminetetraacetic acid contacts the teeth while in the form of a paste.
Claim 12
Dependent Claim
21 words
Method of claim 10, wherein the paste comprises about 1 to 20% by weight of said sodium salt of ethylenediaminetetraacetic acid.
Claim 13
Dependent Claim
19 words
Method of claim 11, wherein said paste comprises about 2-15% by weight of said sodium salt of ethylenediaminetetraacetic acid.
Claim 14
Dependent Claim
19 words
Method of claim 12, wherein said paste comprises about 5-7% by weight of said sodium salt of ethylenediaminetetraacetic acid.
Claim 15
Dependent Claim
13 words
Method according to claim 1 and wherein said contact is then effected daily.
References Cited (Backward Citations)
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US3988434A
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Cited
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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) | 1994-07-15 | 1995-01-14 | 1995-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-15 | 1999-01-14 | 1999-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-15 | 2003-01-14 | 2003-07-16 | $7700.00 | Window Closed / Lapsed |