Patent US3107898A successfully refreshed from Google Patents.
US4789338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental prosthesis
Assignee: IMPLANTEC A CORP OF WEST GERMANY GmbH
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Filing: 1987-01-27
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Granted: 1988-12-06
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Expires: 2007-01-27
Abstract
Abstract A dental prosthesis having multiple components is provided with flexibility by connecting individual components of the prosthesis with flexible buffer components that are connected to the individual components of the prosthesis through dovetail slots that are located between adjacent components. The flexible buffer components are inserted in the dovetail slots to connect adjacent components of the prosthesis. The connection of tooth crowns and bridge components by the flexible means of the present invention fixes in place the remaining teeth to which the crown or bridge is connected but it preserves the flexibility of the teeth that support the crown or bridge. This contributes to a healthy mouth. The mobility of the dental prosthesis can be adjusted to approximate that of the normal teeth by varying the flexibility of the buffer part or parts.
Inventors
- 👤 Friedrich Eisenmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:17
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/225; A61C13/26
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
139 words
A connector for flexible removable interconnection of dental units such as crowns and bridges, each dental unit including a biting surface and an axis that is substantially perpendicular to the biting surface, the connector comprising: (a) a slot in each of the dental units parallel to the axis, said slot open at a first end that is closer to said biting surface and closed with a step at an end opposite to said first end, said slots opposite each other in adjacent dental units, each of said slots undercut to form a dovetail cross-section; (b) a sleeve sized to fit in each of said slots; and (c) a flexible buffer means having dovetail corss-sections on opposite sides removably and slidably inserted into said sleeves in said slots in adjacent dental units to hold the dental units in side-by-side engagement.
Claim 2
Dependent Claim
139 words
A connector for flexible removable interconnection of dental units such as crowns and bridges, each dental unit including a biting surface and an axis that is substantially perpendicular to the biting surface, the connector comprising: (a) a slot in each of the dental units parallel to the axis, said slot open at a first end that is closer to said biting surface and closed with a step at an end opposite to said first end, said slots opposite each other in adjacent dental units, each of said slots undercut to form a dovetail cross-section; (b) a sleeve sized to fit in each of said slots; and (c) a flexible buffer means having dovetail corss-sections on opposite sides removably and slidably inserted into said sleeves in said slots in adjacent dental units to hold the dental units in side-by-side engagement.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 wherein said buffer means comprises an additional secondary sleeve sized for insertion into said slot.
Claim 4
Dependent Claim
34 words
The apparatus of claim 1 comprising in addition a metal sleeve sized for insertion into said slot and a secondary sleeve connected to said buffer means and sized to fit into said metal sleeve.
Claim 5
Dependent Claim
17 words
The apparatus of claim 3 wherein said secondary sleeve is affixed to said buffer means by ribs.
Claim 6
Dependent Claim
26 words
The connector for a dental prosthesis of claim 1 wherein said slots are tapered and wherein said buffer means is tapered to fit the tapered slots.
Claim 7
Dependent Claim
19 words
The connector for a dental prosthesis of claim 1 wherein said buffer means is constricted in a middle region.
Claim 8
Dependent Claim
14 words
The apparatus of claim 1 comprising in addition fiber bundles disposed in the buffer.
Claim 9
Dependent Claim
19 words
The connector for a dental prosthesis of a claim 1 comprising in addition spiral threads disposed in the buffer.
Claim 10
Dependent Claim
18 words
The connector for a dental prosthesis of claim 1 wherein said buffer means is formed of plastic strips.
Claim 11
Dependent Claim
18 words
The connector for a dental prosthesis of claim 1 wherein said buffer means is formed of metal strips.
Claim 12
Dependent Claim
21 words
The connector for a dental prosthesis of claim 1 wherein said buffer means is formed of alternating plastic and metal strips.
References Cited (Backward Citations)
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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) | 1991-12-06 | 1992-06-06 | 1992-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-06 | 1996-06-06 | 1996-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-06 | 2000-06-06 | 2000-12-06 | $7700.00 | Window Closed / Lapsed |