Patent US4174571A successfully refreshed from Google Patents.
US4174571A
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Method for cleaning teeth
Assignee: Cavitron Corp
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Filing: 1978-07-28
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Granted: 1979-11-20
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Expires: 1998-07-28
Abstract
Abstract A method for cleaning teeth involving the conjoint use of streams of water and of a water soluble abrasive carried in an air stream.
Inventors
- 👤 Ben J. Gallant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:59
CPC Classifications
B; B24; B24C; B24C7/00; B24C7/0084; A; A61; A61C; A61C3/00; A61C3/02; A61C3/025; B24C1/00; B24C1/003
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
58 words
A method for cleaning teeth comprising concurrently directing separate streams of water and of an abrasive laden gas against a tooth to be cleaned, the abrasive comprising particles of a water soluble material, and the water and gas streams being directed in predetermined relation to each other and to areas of the tooth immediately adjacent to each other.
Claim 2
Independent Claim
58 words
A method for cleaning teeth comprising concurrently directing separate streams of water and of an abrasive laden gas against a tooth to be cleaned, the abrasive comprising particles of a water soluble material, and the water and gas streams being directed in predetermined relation to each other and to areas of the tooth immediately adjacent to each other.
Claim 3
Dependent Claim
14 words
A method as defined in claim 1 in which the abrasive is sodium bicarbonate.
Claim 4
Independent Claim
41 words
A method as defined in claims 1 or 2 in which a plurality of streams of water are concurrently directed against the tooth to be cleaned, the streams of water being directed in predetermined paths surrounding the abrasive laden gas stream.
Claim 5
Dependent Claim
38 words
A method as defined in claim 1 in which the quantity of water delivered to the surface of the tooth is sufficient to dissolve the abrasive particles delivered to the surface of the tooth by said gas stream.
Claim 6
Independent Claim
60 words
A method for cleaning teeth comprising directing a stream of an abrasive laden gas against a tooth surface in the presence of a film of water on said surface, the abrasive comprising particles of water soluble abrasive material, and replenishing the water film at a rate sufficient to dissolve the abrasive particles delivered to the tooth surface by said stream.
Claim 7
Independent Claim
60 words
A method for cleaning teeth comprising directing a stream of an abrasive laden gas against a tooth surface in the presence of a film of water on said surface, the abrasive comprising particles of water soluble abrasive material, and replenishing the water film at a rate sufficient to dissolve the abrasive particles delivered to the tooth surface by said stream.
Claim 8
Independent Claim
70 words
A method for cleaning teeth comprising directing a stream of an abrasive-laden gas toward the surface of a tooth to be cleaned, concurrently directing a stream of water toward said surface, the abrasive comprising particles of a water-soluble material, and the water and gas streams being directed to provide for the presence of both water and abrasive particles within the same target area of the tooth surface to be cleaned.
Claim 9
Independent Claim
70 words
A method for cleaning teeth comprising directing a stream of an abrasive-laden gas toward the surface of a tooth to be cleaned, concurrently directing a stream of water toward said surface, the abrasive comprising particles of a water-soluble material, and the water and gas streams being directed to provide for the presence of both water and abrasive particles within the same target area of the tooth surface to be cleaned.
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) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |