Implant fixture for tooth prosthesis

Details Implant fixture for tooth prosthesis Implant fixture for tooth prosthesis

1989-05-19

1991-01-29

Stone, Cary E.

Dentistry

Prosthodontics

Holding or positioning denture in mouth

A61C 800

Patent

active

049882996

ABSTRACT:
A fixture intended for implanting and anchoring in bone tissue, particularly in bone tissue of the jaw, to support a prosthesis such as the crown of a tooth. The fixture has at least a surface layer of material compatible with the tissue, such as titanium. The fixture comprises a lower shaft portion with external threading and an upper, smooth, neck portion. The lower portion is arranged to be screwed into a hole drilled in the bone tissue. The diameter of the hole is substantially in agreement with the core diameter of the shaft portion. The diameter of the neck portion lies within the interval between the outer diameter of the thread on the shaft portion and the core diameter of the shaft portion. The neck portion has an axial length exceeding the settlement in bone level which normally occurs upon use of the fixture.

REFERENCES:
patent: 4466796 (1984-08-01), Sandhaus
patent: 4468200 (1984-08-01), Munch
patent: 4668191 (1987-05-01), Plischka
patent: 4826434 (1989-05-01), Krueger

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