The Development of a Digital Type Jaw Movement Analyzer.
Tetsuya Fujimura, Eiichi Bando · Nihon Hotetsu Shika Gakkai Zasshi · 1991
The purpose of this research is to develop a digital type jaw movement analyzer for studying human mandibular movement. This type of instrument has wide application in both research and clinical sciences.The instrument with attached type sensor is fixed to the maxillary and mandibular arches allowing measurement of jaw movements with six degrees of freedom.A description of the features of the newly developed instrument is as follows:1. The measurement accuracy of jaw movement and maxillary arch target point is less than 170μm.2. The jaw movement analyzer can collect data of mandibular position at a maximum of 6, 500 positions per second. Data processing is performed by online real time system in which a monitor displays jaw movement tracks.3. The measuring instrument weighs 660g. The maxillary arch weighs 533 g and the mandibular arch 127g. This instruments allows all normal jaw function and therefore disturbances to stomatoghnatic system is minimal.