Method and apparatus for measuring relative jaw movement

Details Method and apparatus for measuring relative jaw movement Method and apparatus for measuring relative jaw movement

1987-09-11

1989-08-22

Wilson, John J.

Dentistry

Apparatus

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

128777, A61C 1904

Patent

active

048591815

ABSTRACT:
A process and apparatus for three-dimensional determination of the relative movement between the upper and lower human jaws by affixing at least one reference element to each of the jaws, one of the reference elements having four spatially staggered reference marks and the other having at least three spatially staggered reference marks. The position of each reference marks is optically detected along at least two viewing axes. The relative movement of the jaws is then determined from the change in the mutual position of the reference marks.

REFERENCES:
patent: 4330276 (1982-05-01), Becker et al.
patent: 4447207 (1984-05-01), Kataoka et al.
patent: 4673352 (1987-06-01), Hansen
"Interocclusal Distance Measurement Comparing Chin and Tooth Reference Points", Ekfeldt et al., Jo. of Pros. Dent., 5/1982, vol. 47, No. 5.
"Recording of Mandibular Movements by Intraorally Placed LEDs", Karlsson, vol. 35, Acta. Odont. Scan., 111 (1977).
"Real Time Monitoring of the Movement of the Mandible", Curry et al., Proceedings 4-American Society of Photogrammetry, 99, 1986.

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