Method and apparatus for sensing jaw position and movements and

Details Method and apparatus for sensing jaw position and movements and Method and apparatus for sensing jaw position and movements and

1979-07-18

1980-11-18

Peshock, Robert

Dentistry

Apparatus

Work support

A61C 1102

Patent

active

042343062

ABSTRACT:
Method and apparatus for sensing jaw position and movements and for converting the sensed data to dental articulator settings for simulating said movement are disclosed. Included are a pair of clutches which are fitted to the patient's maxillary and mandibular teeth. The respective clutch plates are removably secured to the housing of a jaw movement recording device and to a movable indicia-bearing arm. At least three indicia are mounted at the inner end of the arm in a manner such that they are viewable from three mutually orthogonal directions. Photoresponsive means are included for sensing and/or recording the indicia during and/or following displacement of the indicia-bearing arm during and/or following condyle movements of the patient's mandible. By this means, information as to the position and skew angle of the indicia in three dimensions is provided. This information, together with measurements relating the hinge axis of the patient's jaws to the device, is used for determining border positions and/or movements of the right and left mandibular condyles during jaw movement, and dental articulator settings required to reproduce such movements. A properly programmed digital computer may be used for making such determinations.

REFERENCES:
patent: 1664210 (1928-03-01), Hall
patent: 3321832 (1967-05-01), Weisberg
patent: 3712716 (1973-01-01), Cornsweet
patent: 3717857 (1973-02-01), Evans

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