Apparatus for determining the three-dimensional position and att

Details Apparatus for determining the three-dimensional position and att Apparatus for determining the three-dimensional position and att

1983-11-29

1987-01-27

Peshock, Robert

Dentistry

Apparatus

Having means to record or indicate jaw movement or position...

433 73, 433 68, A61C 1904

Patent

active

046392203

ABSTRACT:
An apparatus for measuring the three-dimensional position and attitude of upper and lower clutches attached on patient's maxillary and mandibular teeth for computerized measurement of the mandibular movements necessary for the fabrication of dental prostheses is disclosed. The apparatus includes a part of a sphere that is fixed to the mandible and which is marked with a reference line and a part of another sphere of substantially the same radius as that of the above sphere, which is fixed to the maxilla and which is also marked with a reference line. The surfaces of the two spheres are caused to slide against each other, with their centers being in alignment, thereby achieving the measurement of the relative attitude of the two spheres.

REFERENCES:
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patent: 2794253 (1957-06-01), Fitzsimmons
patent: 2814876 (1957-12-01), Stuart
patent: 3052030 (1962-09-01), Spence
patent: 3350782 (1967-11-01), Guichet
patent: 3431649 (1969-03-01), Guichet
patent: 3905112 (1975-09-01), Swanson
patent: 4084319 (1978-04-01), Dragan
patent: 4096637 (1978-06-01), Stade
patent: 4292026 (1981-09-01), Yokota

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