Patent ID: 7182737
Filing Date: 2007-02-27
Classification: A61C

Abstract:
1. An apparatus for measuring the center of rotation of jaw motion and the track thereof, the apparatus comprising: a pair of fixed markers attached to the left side and right side of patient's face respectively; a pair of movable markers disposed to face the fixed markers in a spaced distance and moving in unison with the movement of the lower jaw of patient; a coupling device for connecting the movable markers to the lower jaw of patient; a plurality of cameras for recording the movement of the movable markers relative to the fixed markers, according to the movement of lower jaw; and a control device for receiving and processing the image signals fed from connected cameras, wherein the fixed markers have the shape of a plate, and a borderline with a specific color is provided at the edge of each fixed marker for the easy discrimination from the surroundings, and a plurality of quadrangles are arrayed in a checkered pattern inside the borderline which is formed on the surface of the fixed markers.