The Development of a Digital Type Jaw Movement Analyzer.

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  • Fujimura Tetsuya
    Department of Fixed Prosthodontics, School of Dentistry, The University of Tokushima
  • Bando Eiichi
    Department of Fixed Prosthodontics, School of Dentistry, The University of Tokushima

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  • ディジタル方式顎運動測定器の開発

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Abstract

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.<BR>The instrument with attached type sensor is fixed to the maxillary and mandibular arches allowing measurement of jaw movements with six degrees of freedom.<BR>A description of the features of the newly developed instrument is as follows:<BR>1. The measurement accuracy of jaw movement and maxillary arch target point is less than 170μm.<BR>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.<BR>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.

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