US4810193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tooth shade guide casting form
Assignee: Individual
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Filing: 1987-12-07
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Granted: 1989-03-07
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Expires: 2007-12-07
Abstract
Abstract A tooth shade guide casting form for in-office preparation of shade samples of tooth color restoration material (TCRM) to be utilized by dentists in the restoration of a patient's tooth surface. The invention includes a handle, preferably of thin transparent plastic, and a detachable bowl disposed from one end of the handle. The bowl is preferrably the size and shape of a human tooth and is adapted to receive a quantity of photocurable TCRM to be hardened therein. After hardening, the bowl is detached from the handle, leaving the cured TCRM shade sample attached to the first end of the handle. Such samples, having the contour of the bowl, are then used by dentists in selecting the properly colored TCRM for restoring patients' teeth. The handle may also include means disposed at its other end for retaining and displaying a label designating the particular TCRM, while the invention may also include a separate holder for retaining and displaying a plurality of handles with TCRM shade samples attached for easier color selection prior to selection and repair.
Inventors
- 👤 Steven M. Wieder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:56
CPC Classifications
A; A61; A61C; A61C19/00; A61C19/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
166 words
A tooth shade guide casting form for cast forming photo curable tooth color restorative material (TCRM) color samples comprising: an elongated handle having a first and second end and including a bowl separated from said handle first end by a transverse line of weakness, said bowl extending longitudinally from said handle first end and said line of weakness; said bowl outwardly enlarging to its margin for receiving and supporting a quantity of TCRM during its curing and hardening process; said line of weakness for facilitating detachment therebetween after the TCRM is cured and hardened into a shade sample, said bowl, free of overlapping projections, being detachable from said handle along said line of weakness, leaving the cured and hardened TCRM color sample connected to and extending longitudinally from said handle first end for displaying the TCRM color sample unobstructed by said handle first end, said bowl having ribs forming striations in the surface of each color sample for enhanced accuracy of color sample comparison and selection.
Claim 2
Dependent Claim
166 words
A tooth shade guide casting form for cast forming photo curable tooth color restorative material (TCRM) color samples comprising: an elongated handle having a first and second end and including a bowl separated from said handle first end by a transverse line of weakness, said bowl extending longitudinally from said handle first end and said line of weakness; said bowl outwardly enlarging to its margin for receiving and supporting a quantity of TCRM during its curing and hardening process; said line of weakness for facilitating detachment therebetween after the TCRM is cured and hardened into a shade sample, said bowl, free of overlapping projections, being detachable from said handle along said line of weakness, leaving the cured and hardened TCRM color sample connected to and extending longitudinally from said handle first end for displaying the TCRM color sample unobstructed by said handle first end, said bowl having ribs forming striations in the surface of each color sample for enhanced accuracy of color sample comparison and selection.
Claim 3
Dependent Claim
18 words
A tooth shade guide casting form as set forth in claim 1, wherein: said handle is transparent plastic.
Claim 4
Dependent Claim
31 words
A tooth shade guide casting form as set forth in claim 1, further comprising: label retaining means disposed from the second end of said handle for receiving replacable TCRM identifying labels.
Claim 5
Dependent Claim
50 words
A tooth shade guide casting form as set forth in claim 1, further comprising: a holder having a plurality of spaced apart grooves each adapted to receive one said handle; said holder for displaying a plurality of cured TCRM color samples each longitudinally extending from one said handle first end.
Claim 6
Dependent Claim
18 words
A tooth shade guide casting form as set forth in claim 1, wherein said bowl is toothed shaped.
Claim 7
Dependent Claim
175 words
A tooth shade guide casting form for cast forming photo curable tooth color restorative material (TCRM) color samples comprising: an elongated handle having a first and second end and including an integrally formed bowl fixed and extending longitudinally from said first end; said bowl having a bottom and sides extending divergently therefrom to its margin forming a bowl rim; said rim forming the largest plan view projection of said bowl; said bowl for receiving a quantity of TCRM and supporting same in a fixed relation to and extending longitudinally from said handle while the TCRM cures and hardens into a color sample; said handle first end including a prong extending longitudinally from said handle first end into said bowl to be surrounded by and to interengage with the TCRM; said bowl, free of overlapping projections around the color sample, detachable from said handle and a color sample along a line of weakness positioned generally transversely across said handle first end; said color sample extending from, sand viewable in unobstructed fashion with respect to, said handle.
Claim 8
Dependent Claim
175 words
A tooth shade guide casting form for cast forming photo curable tooth color restorative material (TCRM) color samples comprising: an elongated handle having a first and second end and including an integrally formed bowl fixed and extending longitudinally from said first end; said bowl having a bottom and sides extending divergently therefrom to its margin forming a bowl rim; said rim forming the largest plan view projection of said bowl; said bowl for receiving a quantity of TCRM and supporting same in a fixed relation to and extending longitudinally from said handle while the TCRM cures and hardens into a color sample; said handle first end including a prong extending longitudinally from said handle first end into said bowl to be surrounded by and to interengage with the TCRM; said bowl, free of overlapping projections around the color sample, detachable from said handle and a color sample along a line of weakness positioned generally transversely across said handle first end; said color sample extending from, sand viewable in unobstructed fashion with respect to, said handle.
Claim 9
Dependent Claim
31 words
A tooth shade guide casting form as set forth in claim 6, further comprising: label retaining means disposed from said second end of said handle for receiving replaceable TCRM identifying labels.
Claim 10
Dependent Claim
33 words
A tooth shade guide casting form as set forth in claim 7, further comprising: ridges formed in said bowl bottom which form striations into the color samples representing a tooth's irregular exposed surface.
Claim 11
Dependent Claim
29 words
A tooth shade guide casting form as set forth in claim 8, further comprising: a tab disposed from said rim for grasping to detach said bowl from said handle.
Claim 12
Dependent Claim
181 words
A tooth shade guide casting form for case forming photo curable tooth color restorative material (TCRM) color samples comprising: an elongated transparent handle having a first and second end and including an integrally formed mold having a cavity fixed and extending longitudinally from its first end; said cavity having a bottom and side walls each extending divergently therefrom to form a rim; said cavity generally having an overall size equal to a natural tooth, said rim forming the largest plan view projection of said bowl; said cavity having a cavity extension which extends longitudinally in overlapping fashion into said handle first end; said cavity for receiving a quantity of TCRM and supporting same in fixed relationship to and extending longitudinally from said handle while the TCRM cures and hardens into a color sample; said cavity, free of overlapping projections around the color sample, detachable from said handle and the color sample along a line of weakness formed generally transversely into and across said handle first end; said color sample extending from, and viewable in unobstructed fashion with respect to, said handle.
Claim 13
Dependent Claim
181 words
A tooth shade guide casting form for case forming photo curable tooth color restorative material (TCRM) color samples comprising: an elongated transparent handle having a first and second end and including an integrally formed mold having a cavity fixed and extending longitudinally from its first end; said cavity having a bottom and side walls each extending divergently therefrom to form a rim; said cavity generally having an overall size equal to a natural tooth, said rim forming the largest plan view projection of said bowl; said cavity having a cavity extension which extends longitudinally in overlapping fashion into said handle first end; said cavity for receiving a quantity of TCRM and supporting same in fixed relationship to and extending longitudinally from said handle while the TCRM cures and hardens into a color sample; said cavity, free of overlapping projections around the color sample, detachable from said handle and the color sample along a line of weakness formed generally transversely into and across said handle first end; said color sample extending from, and viewable in unobstructed fashion with respect to, said handle.
Claim 14
Dependent Claim
31 words
A tooth shade guide casting form as set forth in claim 10, further comprising: label retaining means disposed from said second end of said handle for receiving replaceable TCRM identifying labels.
Claim 15
Dependent Claim
33 words
A tooth shade guide casting form as set forth in claim 11, further comprising: ridges formed in said cavity bottom which form serations into the color samples representing a tooth's irregular exposed surface.
Claim 16
Dependent Claim
29 words
A tooth shade guide casting form as set forth in claim 12, further comprising: a tab disposed from said rim for grasping to detach said cavity from said handle.
Claim 17
Dependent Claim
61 words
A tooth shade guide casting form as set forth in claim 13, wherein: said cavity extension includes at least one aperture through said handle such that a portion of the TCRM fills said at least one aperture, completely transecting said handle with TCRM through said at least one aperture for added strength and interengagement between said handle and the color sample.
References Cited (Backward Citations)
US785992A
Cited
US1327306A
Cited
US1518608A
Cited
US2249634A
Cited
US2479543A
Cited
AT169093B
Cited
US4115922A
Cited
US4382784A
Cited
US4541801A
Cited
US4618325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |