Apparatus for detecting movements of a mandible

Apparatus for detecting movements of the mandible relative to the upper jaw of a vertebrate, with a head mounted the vertebrate in a fixed relationship to the upper jaw first support (30) for receiving the transmission or receiving units a position determining system (1) for motion detection, a left side on the lower jaw to be fixed second holder (40A) for receiving corresponding left side receive and transmit units of the positioning system, a right-hand side to be fixed on the lower jaw third bracket (40B) for receiving corresponding right-side receiving and transmitting units of the positioning system, and a first evaluation unit (13 ) for processing signals of the receiving units in order from associated with the movements of the mandible and detected by the receiving units relative position changes of the transmission units (11) a differentiated dynamic image of the movements of the left n and right sides of the lower jaw to generate.