US4759714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tooth root channel anchor
Assignee: Individual
•
Filing: 1981-06-03
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Granted: 1988-07-26
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Expires: 2001-06-03
Abstract
Abstract A tooth root channel anchor comprising a conical anchoring member, said anchoring member including a head portion upon which an artificial tooth can be built up, the anchoring member having a conicity or taper of from about 1° to about 5° and having a longitudinal axis and a periphery, a plurality of anchoring ribs disposed around said periphery of said anchoring member and at least two grooves formed in said anchoring member extending parallel to said longitudinal axis, said grooves acting as cutting and cement discharging grooves.
Inventors
- 👤 Georg Szegvary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/225; A61C13/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
188 words
An improved tooth root channel anchor of the type having a head portion for attachment of an artificial tooth thereto and an anchoring member portion for attachment to a tooth root channel, wherein the improvement comprises: said anchoring member having a longitudinal axis; a radially-decreasing conical axial profile along said axis of between approximately two degrees and five degrees, said profile decreasing from a portion proximate said head to a distal end portion; said distal end having a rounded profile; a helically wound anchoring rib attached to and protruding from the entire length of said anchoring member about said longitudinal axis, and having a wound pitch of between approximately seventy degrees and eighty degrees relative said axis; and said anchoring member defining two or more longitudinal groove means parallel to said longitudinal axis for cutting said rib in a self-threading fashion into the wall of a hole defined in said root channel in order to attach said anchoring member to a root channel during a dental attachment procedure and for discharging excess dental cement that may be present in a root channel hole during a dental attachment procedure.
Claim 2
Dependent Claim
188 words
An improved tooth root channel anchor of the type having a head portion for attachment of an artificial tooth thereto and an anchoring member portion for attachment to a tooth root channel, wherein the improvement comprises: said anchoring member having a longitudinal axis; a radially-decreasing conical axial profile along said axis of between approximately two degrees and five degrees, said profile decreasing from a portion proximate said head to a distal end portion; said distal end having a rounded profile; a helically wound anchoring rib attached to and protruding from the entire length of said anchoring member about said longitudinal axis, and having a wound pitch of between approximately seventy degrees and eighty degrees relative said axis; and said anchoring member defining two or more longitudinal groove means parallel to said longitudinal axis for cutting said rib in a self-threading fashion into the wall of a hole defined in said root channel in order to attach said anchoring member to a root channel during a dental attachment procedure and for discharging excess dental cement that may be present in a root channel hole during a dental attachment procedure.
Claim 3
Dependent Claim
19 words
The improved anchor as recited in claim 1, wherein said conical profile of said anchoring member is approximately 2°.
Claim 4
Dependent Claim
23 words
The improved anchor as recited in claim 1, wherein said rib protrudes from said anchoring member between approximately 0.10 mm. and 0.15 mm.
Claim 5
Dependent Claim
97 words
The improved anchor as recited in claim 1, wherein said head portion has a longitudinal axis substantially co-axial with said longitudnal axis of said anchoring member and a periphery, said periphery defining three groves formed therein extending parallel to said longitudinal axis of said head portion, said periphery also having four layers of vanes extending substantially perpendicularly to said longitudinal axis and being outwardly directed from said longitudinal axis, said layers of vanes extending substantially parallel to one another, said layer of vanes nearest said anchoring member having a smaller diameter than said remaining layers of vanes.
Claim 6
Dependent Claim
28 words
The improved anchor as recited in claim 4, wherein said grooves formed in said head portion and said grooves formed in said anchoring member are each substantially V-shaped.
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) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |