Precision abutment base

Details Precision abutment base Precision abutment base

1989-01-23

1991-01-29

Swiatek, Robert P.

Dentistry

Prosthodontics

Holding or positioning denture in mouth

433174, 4332021, A61C 800

Patent

active

049882988

ABSTRACT:
A Precision-machined abutment base for accurately fixing an artificial tooth to a dental implant fixture is fashioned of a dental gold alloy or other machinable rigid dental material in a tubular form having an internal retainer for fixing it to the implant fixture, and external retainers for anchoring it to a rigid substructure of the tooth and to an anatomical overlay covering the substructure. An artificial tooth is disclosed in which the substructure is a casting of the same material as the abutment base, forming a unit with the base, is covered with an overlay of porcelain that is bonded at its gingival end directly to a marginal portion of the abutment base, completely concealing the substructure.

REFERENCES:
patent: 3624904 (1971-12-01), Linkow
patent: 3722094 (1973-03-01), Rivoir
patent: 3732621 (1973-05-01), Bostrom
patent: 4229170 (1980-10-01), Perez
patent: 4318696 (1982-03-01), Kasawa et al.
patent: 4657510 (1987-04-01), Gittleman
patent: 4713004 (1987-12-01), Linkow et al.
patent: 4756689 (1988-07-01), Lundgren et al.
patent: 4758160 (1988-07-01), Ismail

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