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Patent US4322207A successfully refreshed from Google Patents.
US4322207A
Expired / Lapsed
US
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Dental cleaning slurry
Assignee: Individual
•
Filing: 1976-01-26
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Granted: 1982-03-30
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Expires: 1996-01-26
Abstract
Abstract A dental cleaning slurry and method of cleaning teeth comprising an aqueous suspension of particulate material having a hardness which is softer than the softest exposed part of the teeth. The slurry is directed against the teeth under sufficient water pressure for the particulate material to penetrate and dislodge any plaque or food particles that may adhere to the teeth.
Inventors
- 👤 Erik H. Madsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:06
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8105; A61K8/8111; A61Q; A61Q11/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
36 words
A hygienic slurry for the cleaning of teeth comprising an aqueous solution having suspended therein inert particulate materials having a Knoop hardness of less than 68 which are softer than the outer surface of the teeth.
Claim 2
Dependent Claim
36 words
A hygienic slurry for the cleaning of teeth comprising an aqueous solution having suspended therein inert particulate materials having a Knoop hardness of less than 68 which are softer than the outer surface of the teeth.
Claim 3
Dependent Claim
23 words
A hygienic slurry according to claim 1 wherein the volumetric ratio of particulate materials to aqueous solution is between about 1:1.5 and 1:10.
Claim 4
Dependent Claim
21 words
A hygienic slurry according to claim 2 wherein the diameter of the particulate materials is between about 0.002 and 0.020 inches.
Claim 5
Dependent Claim
15 words
A hygienic slurry according to claim 3 wherein the particulate materials are irregular in shape.
Claim 6
Dependent Claim
23 words
A hygienic slurry according to claim 3 wherein the volumetric ratio of particulate materials to aqueous solution is between about 1:4 and 1:6.
Claim 7
Dependent Claim
20 words
A hygienic slurry according to claim 5 wherein the volumetric ratio of particulate materials to aqueous solution is about 1:5.
Claim 8
Dependent Claim
15 words
A hygienic slurry according to claim 5 wherein the aqueous solution contains a breath sweetener.
Claim 9
Dependent Claim
14 words
A hygienic slurry according to claim 5 wherein the aqueous solution contains a disinfectant.
Claim 10
Dependent Claim
15 words
A hygienic slurry according to claim 5 wherein the aqueous solution contains a fluoridating agent.
Claim 11
Dependent Claim
14 words
A hygienic slurry according to claim 5 wherein the particulate material is a plastic.
Claim 12
Dependent Claim
15 words
A hygienic slurry according to claim 10 wherein the particulate plastic material is a polyethylene.
Claim 13
Dependent Claim
15 words
A hygienic slurry according to claim 10 wherein the particulate plastic material is a polypropylene.
Claim 14
Independent Claim
91 words
A method for cleaning teeth which comprises applying to the surfaces of the teeth at a pressure of about 15 to 60 psi a stream of a slurry comprising an aqueous solution having suspended therein particulate materials having a Knoop hardness of less than 68, which particulate materials are softer than the surfaces of the teeth being cleaned, the ratio of particulate material to aqueous solution in the slurry being between about 1:1.5 and 1:10 and the size of the particulate material being between about 0.002 and 0.020 inches in diameter.
Claim 15
Independent Claim
91 words
A method for cleaning teeth which comprises applying to the surfaces of the teeth at a pressure of about 15 to 60 psi a stream of a slurry comprising an aqueous solution having suspended therein particulate materials having a Knoop hardness of less than 68, which particulate materials are softer than the surfaces of the teeth being cleaned, the ratio of particulate material to aqueous solution in the slurry being between about 1:1.5 and 1:10 and the size of the particulate material being between about 0.002 and 0.020 inches in diameter.
References Cited (Backward Citations)
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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) | 1985-03-29 | 1985-09-28 | 1986-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-29 | 1989-09-28 | 1990-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-29 | 1993-09-28 | 1994-03-30 | $7700.00 | Window Closed / Lapsed |