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Related Experiment Videos

Perioral force measurement by a radiotelemetry device.

Y Kato1, T Kuroda, T Togawa

  • 12nd Department of Orthodontics, Faculty of Dentistry, Tokyo Medical and Dental University.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|May 1, 1989
PubMed
Summary

A new telemetric system accurately measures active and passive perioral forces on teeth. This innovative device monitors forces during rest, swallowing, and speech, offering insights into dental arch dynamics.

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Area of Science:

  • Biomedical Engineering
  • Dental Mechanics
  • Biomechanics

Background:

  • Accurate measurement of perioral forces is crucial for understanding dental arch dynamics.
  • Existing methods for monitoring forces on the maxillary dental arch are limited.
  • A non-invasive, continuous monitoring system is needed.

Purpose of the Study:

  • To develop and validate a telemetric system for monitoring active and passive perioral forces on the maxillary dental arch.
  • To assess the system's feasibility in a clinical setting.

Main Methods:

  • Development of a telemetric system with intraoral and extraoral units.
  • Utilizing electromagnetic coupling for power supply and signal transmission.
  • Employing a force sensor with semiconductor strain gauges on a cantilever beam.

Related Experiment Videos

  • Clinical testing in four adult subjects.

    • Main Results:

    • The telemetric system successfully monitored perioral forces.
    • Labial forces measured were 1.5 gm/cm² (rest), 10.9 gm/cm² (swallowing), and 5.0 gm/cm² (speech).
    • Lingual forces measured were 4.0 gm/cm² (rest), 19.1 gm/cm² (swallowing), and 13.9 gm/cm² (speech), consistently higher than labial forces.
    • Continuous monitoring for up to 6 hours was demonstrated.

    Conclusions:

    • The developed telemetric system provides a reliable method for measuring perioral forces.
    • Lingual forces exerted on the maxillary dental arch are significantly higher than labial forces.
    • This technology has potential applications in orthodontics and dental research.