Device for displaying masticatory muscle activities

摘要

A device for making it possible to visually provide a thorough knowledge of the activities of the masticatory muscles by optically measuring and displaying the EMG potential of the masticatory muscles at the time of matication for use in correcting abnormal and unbalance occlusion patterns. The device comprises a plurality of sets of electrodes (8) and (9) each set consisting of a pair of right and left electrodes, said electrodes being designed to be attached to the surfaces of the masseter and temporal muscles in both sides so as to detect electromyographic potentials in time of mastication, a means (A) for converting the electromyographic potentials detected by said electrodes (8) and (9) respectively into electrical signals for display, a display means (C) for selectively energizing said means (C) in response to the signal, the means (C) including display lines (L1) and (L2) of light-emitting members (12) and (13) which are independent of one another for each of the electrodes (8) and (9). The means (C) is mounted in a position in which a person to be examined (P) is enabled to watch the means (C).