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Bilabial compression force discrimination by human subjects.

W N Williams1, A O Vaughn, C E Cornell

  • 1Department of Oral Biology, University of Florida, College of Dentistry, Gainesville 32610.

Journal of Oral Rehabilitation
|May 1, 1988
PubMed
Summary
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Clenching teeth does not significantly alter the perception of subtle changes in lip force, but it does reduce maximum lip strength. This research offers baseline data for assessing lip sensorimotor function.

Area of Science:

  • Speech-language pathology
  • Biomechanics
  • Neuroscience

Background:

  • The lips play a crucial role in speech articulation.
  • Understanding the sensory and motor control of the lips is essential for diagnosing and treating speech disorders.

Purpose of the Study:

  • To compare bilabial compression force difference limen (DL) and maximum force with and without teeth clenching.
  • To establish normative data for labial sensorimotor function.

Main Methods:

  • Twenty healthy female adults participated.
  • Bilabial compression force DL and maximum force were measured under two conditions: teeth clenched and teeth not clenched.
  • A standard force of 100 gm was used for DL measurements.

Main Results:

Related Experiment Videos

  • No significant difference was found in DL values between the clenched (36 gm) and non-clenched (38 gm) conditions.
  • Maximum bilabial compression force was significantly lower when teeth were clenched (411 gm) compared to when they were not (568 gm).

Conclusions:

  • Teeth clenching does not impact the ability to discriminate small changes in lip force.
  • Teeth clenching significantly reduces maximal lip force output.
  • The findings provide normative data for evaluating individuals with potential labial sensorimotor impairments.