US4608015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for selecting the coloration of a bonding composite for a discolored tooth
Assignee: Individual
•
Filing: 1984-07-16
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Granted: 1986-08-26
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Expires: 2004-07-16
Abstract
Abstract A shade guide for dental use comprising a pair of superimposed discs rotatable with respect to one another, one disc being a lower disc with a plurality of regions of different colors representative of different tooth discolorations of the patient, the other disc being an upper disc with a plurality of transparent regions representative of coloration of composite material adapted for being bonded to teeth. By relatively rotating the discs, the transparent regions of the upper disc successively cover the regions of different colors of the lower disc to provide a resultant coloration which neutralizes the discolored tooth and most closely matches the final coloration of the tooth of the patient.
Inventors
- 👤 Irwin E. Smigel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:39
CPC Classifications
A; A61; A61C; A61C19/00; A61C19/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
98 words
A method for selecting the coloration of a bonding composite adapted for being applied to a discolored tooth to neutralize the discoloration of the tooth, said method comprising selecting one of a plurality of different colorations which most closely matches the discoloration of a tooth to be bonded, superimposing on the selected coloration a plurality of transparent regions each of a coloration corresponding to composite material adapted for being bonded onto a tooth, and selecting one of said transparent regions which when superposed on said selected coloration corresponding to the discolored tooth most closely neutralizes said selected coloration.
Claim 2
Independent Claim
98 words
A method for selecting the coloration of a bonding composite adapted for being applied to a discolored tooth to neutralize the discoloration of the tooth, said method comprising selecting one of a plurality of different colorations which most closely matches the discoloration of a tooth to be bonded, superimposing on the selected coloration a plurality of transparent regions each of a coloration corresponding to composite material adapted for being bonded onto a tooth, and selecting one of said transparent regions which when superposed on said selected coloration corresponding to the discolored tooth most closely neutralizes said selected coloration.
Claim 3
Dependent Claim
26 words
A method as claimed in claim 1 wherein the superimposing of the transparent regions on the selected coloration is effected by relatively rotating two superimposed discs.
Claim 4
Dependent Claim
19 words
A method as claimed in claim 2 wherein the discs are relatively rotated about a common axis of rotation.
References Cited (Backward Citations)
US1582122A
Cited
US1709975A
Cited
US1842923A
Cited
US2240053A
Cited
US2462606A
Cited
US3229385A
Cited
US3184864A
Cited
US3507042A
Cited
US4150485A
Cited
US4241520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |