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Related Experiment Videos

Interocclusal distance measurement comparing chin and tooth reference points

A Ekfeldt, T Jemt, L Månsson

    The Journal of Prosthetic Dentistry
    |May 1, 1982
    PubMed
    Summary

    Dentists should note that tooth-mounted sensors show greater interocclusal distance than chin-mounted sensors. This difference is consistent across phonetic, relaxation, and swallowing methods, impacting clinical measurements.

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    Area of Science:

    • Dentistry
    • Biomechanical Engineering

    Background:

    • Accurate measurement of interocclusal distance is crucial in dentistry.
    • Current methods may have variations based on reference point placement.

    Purpose of the Study:

    • To compare interocclusal distances measured using tooth-mounted versus chin-mounted reference points.
    • To evaluate the influence of different measurement methods on recorded distances.

    Main Methods:

    • Nine dentate students (mean age 23.1 years) participated.
    • Two reference LEDs (one on a lower tooth, one on the chin) were used.
    • The Selspot system and computer analysis recorded LED positions simultaneously.

    Main Results:

    • A greater interocclusal distance was consistently recorded with the tooth-attached reference LED.

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  • This finding held true regardless of the measurement method (phonetic, relaxation, swallowing).

    • Conclusions:

    • Tooth-mounted reference points yield larger interocclusal distance measurements than chin-mounted points.
    • Clinicians using chin references should consider this discrepancy, particularly with significant lip movement.