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[Fundamental study on the development of a measuring device using an accelerometer].

Toshiaki Sekita1, Shyo Hasegawa, Iwao Hayakawa

  • 1Department of Masticatory Function Rehabilitation, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University.

Kokubyo Gakkai Zasshi. the Journal of the Stomatological Society, Japan
|March 1, 2003
PubMed
Summary

This study introduces a low-cost accelerometer system for analyzing stomatognathic (jaw) movements. The system accurately measures mandibular motion during activities like chewing, offering a valuable diagnostic tool.

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Area of Science:

  • Biomedical Engineering
  • Biomechanics
  • Dental Technology

Background:

  • Accurate diagnosis of stomatognathic functions is crucial.
  • Existing diagnostic equipment (e.g., MKG, Gnatho-hexagraph) is often expensive and not widely accessible.
  • There is a need for cost-effective and accessible methods for analyzing jaw movements.

Purpose of the Study:

  • To develop and evaluate a novel system using an accelerometer for obtaining positional information.
  • To assess the accuracy of this new system compared to established measurement devices.
  • To demonstrate the system's utility in analyzing mandibular movements during functional tasks.

Main Methods:

  • A system comprising a micro dual-axis accelerometer and a peripheral interface controller was designed.

Related Experiment Videos

  • Two-dimensional acceleration, velocity, and movement data were calculated using computer processing.
  • System accuracy was validated against a laser measuring device.
  • Mandibular movements during chewing were recorded and analyzed using the developed system.

    • Main Results:

    • The accelerometer system achieved an accuracy of 0.03 (p-p values) at a frequency of 72.5 Hz under gravitational acceleration.
    • The system successfully analyzed two-dimensional mandibular movements during raisin chewing.
    • The developed system proved effective for evaluating jaw motion.

    Conclusions:

    • The novel accelerometer-based system offers a cost-effective alternative for assessing stomatognathic functions.
    • This technology has significant potential for research and clinical applications in analyzing mandibular dynamics.
    • The system demonstrates practical value in the functional analysis of jaw movements.