Dentistry – Prosthodontics – Holding or positioning denture in mouth
Patent
1990-01-22
1991-04-23
Wilson, John J.
Dentistry
Prosthodontics
Holding or positioning denture in mouth
433174, A61C 800
Patent
active
050095960
ABSTRACT:
A device for fixing a dental prosthesis is described, which device as parts thereof comprises a spacing element (1) for anchoring into the jaw-bone of a patient and a socket (7) for fixing into a prosthetic part, whereby the socket will rest on the spacing element via an outer conical supporting surface (5) provided on one of said parts, which supporting surface will bear against an inner conical supporting surface (6) provided in the other of said parts. The device is characterized in that a shoulder or flange is provided on the part having the outer conical supporting surface, which shoulder or flange has a planar surface (8) oriented radially around the periphery of the supporting surface, and that an end surface (9) is provided on the part having the inner conical supporting surface oriented radially around the periphery of said supporting surface, whereby the planar surface (8) and the end surface (9) has such an axial position on the respective part that a fine parallel gap is formed between them on bearing of the supporting surfaces against each other. The gap enables checking of the correct bearing of the conical surfaces against each other.
REFERENCES:
patent: 4631031 (1986-12-01), Richter
patent: 4722688 (1988-02-01), Lonca
T. Jemt, Modified Single and Short-Span Restorations Supported by Osseointegrated Fixtures in the Partially Edentulous Jaw, The Journal of Prosthetic Dentistry, Feb. 1986.
Astra Meditec Aktiebolag
Wilson John J.
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