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Related Experiment Videos

Palatal coverage disturbance in masticatory function.

Yoshinori Kaiba1, Shigezo Hirano, Iwao Hayakawa

  • 1Complete Denture Prosthodontics, Graduate School, Tokyo Medical and Dental University, Japan. y.kaiba.ore@tmd.ac.jp

Journal of Medical and Dental Sciences
|May 26, 2006
PubMed
Summary

Palatal plates disrupt chewing efficiency and oral sensorimotor coordination. While oral stereognosis ability improved over time, it did not compensate for the negative impact of the plate on mastication.

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Area of Science:

  • Dentistry
  • Oral Physiology
  • Biomechanics

Background:

  • Oral sensorimotor function is critical for effective mastication.
  • Palatal coverage may interfere with normal chewing and sensory feedback.

Purpose of the Study:

  • To investigate the impact of palatal coverage on masticatory efficiency and oral stereognosis ability (OSA).
  • To assess the relationship between masticatory performance and sensory feedback with and without palatal coverage.

Main Methods:

  • 20 dentate subjects participated in the study.
  • Masticatory efficiency and OSA were measured with and without an experimental palatal plate over several days and after a 2-month period.
  • Measurements included particle size reduction rate for masticatory efficiency and a standardized OSA test.

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Main Results:

  • Masticatory efficiency significantly decreased when the palatal plate was worn.
  • Oral stereognosis ability scores increased over the experimental period but showed no significant difference between conditions (with or without the plate).
  • A positive correlation between masticatory efficiency and OSA was observed only when the plate was not worn.

Conclusions:

  • Palatal coverage impairs masticatory efficiency.
  • The coordination between mastication and oral sensorimotor function is disturbed by palatal coverage.
  • While OSA may adapt, it does not fully mitigate the negative effects of palatal coverage on chewing function.