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Evaluation of masticatory function after maxillectomy using a colour-changing chewing gum.

Y Shibuya1, S Ishida, M Kobayashi

  • 1Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan. shibuya@med.kobe-u.ac.jp

Journal of Oral Rehabilitation
|January 3, 2013
PubMed
Summary

Masticatory dysfunction after maxillectomy can be predicted by the number of anchor teeth and soft palate defects. A color-changing chewing gum effectively evaluates post-operative chewing function, highlighting the importance of preserving these structures.

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Reconstructive Surgery
  • Biomedical Engineering

Background:

  • Maxillectomy, a surgical procedure to remove part or all of the upper jaw, can lead to significant masticatory dysfunction.
  • Evaluating post-operative chewing function is crucial for patient quality of life and rehabilitation.
  • Traditional methods for assessing masticatory function can be complex and time-consuming.

Purpose of the Study:

  • To identify risk factors for masticatory dysfunction following maxillectomy.
  • To evaluate the utility of a color-changing chewing gum in assessing post-operative masticatory function.
  • To correlate chewing gum test results with a standardized questionnaire.

Main Methods:

  • A cohort of 39 patients undergoing maxillectomy was studied.

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  • Intra-oral conditions were classified using the HS classification.
  • Masticatory function was assessed using a color-changing chewing gum and the modified Sato's questionnaire.
  • Logistic regression analysis was performed to identify predictors of dysfunction.

    • Main Results:

    • The color-changing chewing gum scores showed a strong correlation with the modified Sato's questionnaire scores (r = 0.661, P < 0.01).
    • Logistic regression identified a reduced number of anchor teeth (≤2) and soft palate defects as significant predictors of masticatory dysfunction.
    • The color-changing gum proved useful in evaluating post-operative masticatory function.

    Conclusions:

    • Preserving anchor teeth and the soft palate is critical to prevent masticatory dysfunction after maxillectomy.
    • The color-changing chewing gum is a valuable tool for assessing post-operative masticatory performance.
    • Understanding these risk factors aids in surgical planning and patient counseling.