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Related Experiment Videos

Masticatory function in hemimandibulectomy patients.

M T Marunick1, B E Mathes, B B Klein

  • 1Department of Otolaryngology, Wayne State University, Harper Hospital, Detroit, Michigan 48201.

Journal of Oral Rehabilitation
|May 1, 1992
PubMed
Summary
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Surgical removal of parts of the mandible can impair chewing function. Prosthetic rehabilitation may help restore some masticatory performance in patients after hemimandibular resection.

Area of Science:

  • Oral and Maxillofacial Surgery
  • Biomedical Engineering
  • Reconstructive Dentistry

Background:

  • Surgical resection of the mandible, often for squamous cell carcinoma, can significantly impact masticatory structures.
  • Understanding the functional consequences of mandibular defects is crucial for patient rehabilitation.

Purpose of the Study:

  • To evaluate the effect of hemimandibular resection on masticatory function.
  • To assess the efficacy of prosthetic rehabilitation in improving masticatory performance.

Main Methods:

  • Five patients undergoing hemimandibular resection for cancer were studied.
  • Masticatory function was assessed using a 0.5-g corn chip test food and sieve analysis.
  • Tests were performed pre-surgery, post-surgery, and post-prosthetic rehabilitation, with 10 controls for comparison.

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Main Results:

  • Post-surgery, reduced masticatory function was observed, indicated by increased test duration and strokes needed for swallowing.
  • The extent of mandibular resection correlated with decreased masticatory performance.
  • Prosthetic rehabilitation showed improvement in masticatory function for some patients.

Conclusions:

  • Hemimandibular resection negatively affects masticatory function.
  • Prosthetic rehabilitation can partially restore chewing ability.
  • Loss of mandibular continuity is not an absolute predictor of impaired mastication.