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Related Experiment Videos

Resting tongue pressures.

R L Christiansen, C A Evans, S K Sue

    The Angle Orthodontist
    |April 1, 1979
    PubMed
    Summary

    This study measured resting tongue pressure using a force transducer, finding that larger sensor areas non-linearly increased measured force. Tongue pressure correlated with mandibular width.

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    Area of Science:

    • Biomedical Engineering
    • Dental Science
    • Biomechanics

    Background:

    • Understanding tongue pressure is crucial for orthodontics and speech.
    • Previous measurements lacked standardized methodology for sensor size effects.

    Purpose of the Study:

    • To quantify lateral resting-tongue pressure.
    • To investigate the influence of sensor contact area on pressure measurements.
    • To analyze tongue force response to lingual constriction and assess lingual musculature stiffness.

    Main Methods:

    • Utilized a custom-designed force transducer to measure lateral resting-tongue pressure in 23 subjects (17 normal occlusion, 6 open-bite).
    • Employed three sensor tips with varying contact areas (e.g., 4.9 mm diameter).
    • Applied controlled lingual constrictions and measured force changes, deflection gradient, and stiffness.

    Main Results:

    • Average resting tongue force was 0.8 g with a 4.9 mm sensor.
    • Tongue force increased non-linearly with larger sensor areas.
    • Lingual constrictions caused a 230% average increase in lingual force.
    • Mean deflection gradient was 0.34 g/mm, and mean lingual musculature stiffness was 2.30 g/mm.
    • A negative correlation (r = -0.4) was observed between resting-tongue pressure and mandibular intercanine width.

    Conclusions:

    • Sensor contact area significantly impacts resting-tongue pressure measurements.
    • Lingual musculature exhibits measurable stiffness and responds dynamically to constriction.
    • Findings provide valuable data for understanding tongue function and its relation to dental arch form.

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