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Related Experiment Videos

Chewing side preference as a type of hemispheric laterality.

J Nissan1, M D Gross, A Shifman

  • 1Department of Prosthodontics, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel. nissandr@post.tau.ac.il

Journal of Oral Rehabilitation
|May 14, 2004
PubMed
Summary

Most individuals exhibit a chewing side preference, typically on the right. This chewing preference correlates with other lateralization traits and appears to be centrally controlled, independent of dental status or prosthodontic interventions.

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Area of Science:

  • Dental Science
  • Neuroscience
  • Human Lateralization

Background:

  • Chewing side preference is a recognized factor influencing prosthodontic treatment outcomes.
  • Understanding the neurological basis of chewing preference is crucial for effective dental rehabilitation.

Purpose of the Study:

  • To investigate if chewing side preference represents a form of hemispheric lateralization comparable to handedness, footedness, eyedness, and earedness.
  • To explore the relationship between chewing side preference and other established lateralization markers.

Main Methods:

  • Assessed chewing side preference in 189 subjects with varying dentition status (partially edentulous, fully dentate, fully edentulous).
  • Conducted laterality tests for mastication, handedness, footedness, earedness, and eyedness.

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  • Utilized a patient questionnaire to gather additional data.

    • Main Results:

    • A significant majority (78.3%) of subjects preferred chewing on the right side, correlating with right-sided dominance in other tested lateralities.
    • Factors such as missing teeth, occlusion type, gender, and prosthodontic restorations (implant-supported or complete dentures) did not influence chewing side preference.
    • Chewing side preference demonstrated a correlation with other tested hemispheric lateralities.

    Conclusions:

    • Chewing side preference is likely centrally controlled, similar to other forms of hemispheric lateralization.
    • The findings suggest that chewing side preference is an intrinsic characteristic, not significantly modified by common prosthodontic conditions or treatments.
    • Further consideration of centrally controlled chewing side preference is warranted in prosthodontic treatment planning.