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CA1111681A Expired / Lapsed CA ⏱️ 0.0 years remaining

Attachment of tooth crowns

Assignee: PINNOCKCHOICE Ltd
•
Filing: 1978-09-01
•
Granted: 1981-11-03
•
Expires: 1998-09-01
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Abstract

Abstract ABSTRACT A post for attaching a tooth crown to a natural tooth root is disclosed which comprises a screw-threaded shank having a plurality of collars in screw-threaded engagement therewith, the collars being adjustable axially of the shank. A method of attaching a tooth crown using the post as aforesaid is also disclosed, the method including the steps of engaging the shank with a pre-prepared tooth root, locating the collars in a requisite relative disposition on the shank, preferably with a collar against the tooth root face providing a shaped head on the shank and within which the collars are at least partially embedded, and applying a crown to the said shaped head.

Inventors

  • 👤 Peter F. Kurer

Bibliographic Details

Application Number —
Jurisdiction CA
Data Source google_patents
Last Synchronized 2026-10-27 11:52
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/225; A61C13/30; A61C5/00; A61C5/70

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 103 words
An attachment means for engagement with a tooth root and adapted to receive a tooth crown which attachment means comprises a shank for engagement with a pre-prepared tooth root canal one or more collars provided on such shank, the shank being of a non-corrodible material appropriate to the context of dentistry and the or, if more than one, at least one of the said collars being adjustable axially of the said shank, and a core or head applied to the said shank and within which the or at least one of the said collars is embedded for fixed location relative to the shank.
Claim 2
Dependent Claim 103 words
An attachment means for engagement with a tooth root and adapted to receive a tooth crown which attachment means comprises a shank for engagement with a pre-prepared tooth root canal one or more collars provided on such shank, the shank being of a non-corrodible material appropriate to the context of dentistry and the or, if more than one, at least one of the said collars being adjustable axially of the said shank, and a core or head applied to the said shank and within which the or at least one of the said collars is embedded for fixed location relative to the shank.
Claim 3
Dependent Claim 28 words
An attachment means as claimed in claim 1 wherein the shank is a screw-threaded shank, and the or each axially adjustable collar is screw-threadedly engaged with such shank.
Claim 4
Dependent Claim 21 words
An attachment means as claimed in claim 1 or 2, wherein the axially extreme collars are adjustable axially of the shank.
Claim 5
Dependent Claim 32 words
An attachment means as claimed in claim 1, wherein at least one collar is of non-circular form thereby to prevent relative rotation between such collar and the head or core applied thereto.
Claim 6
Dependent Claim 20 words
An attachment means as claimed in claim 1 wherein the periphery and/or surface of at least one collar is serrated.
Claim 7
Dependent Claim 18 words
An attachment means as claimed in claim 1, having a preformed cover applied to the core or head.

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