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Related Experiment Videos

Swallowing patterns in human subjects with and without temporomandibular dysfunction.

E H Williamson1, J T Hall, J D Zwemer

  • 1Department of Orthodontics, School of Dentistry, Medical College of Georgia, Augusta.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|December 1, 1990
PubMed
Summary

Tongue-thrust swallowing is linked to temporomandibular joint (TMJ) dysfunction. Patients with TMJ issues were more likely to exhibit aberrant swallowing patterns, suggesting a connection between the two conditions.

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Area of Science:

  • Dentistry
  • Orthodontics
  • Biomechanics

Background:

  • Clinical observations suggest a link between tongue-thrust swallowing and temporomandibular joint (TMJ) dysfunction.
  • This aberrant swallowing pattern may be an unconscious attempt to mitigate TMJ pain or dysfunction.

Purpose of the Study:

  • To investigate and compare swallowing patterns in individuals with and without diagnosed TMJ dysfunction.
  • To determine if tongue-thrust swallowing is more prevalent in patients experiencing TMJ dysfunction.

Main Methods:

  • Kinesiographic and electromyographic recordings were utilized to analyze swallowing patterns.
  • The study involved 25 adult orthodontic patients with TMJ dysfunction and 25 healthy adult controls.
  • Subjects were recorded while sipping water to capture natural swallowing mechanics.

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Main Results:

  • A significantly higher proportion of patients with TMJ dysfunction (19 out of 25) exhibited a tongue-thrust open-jaw swallowing pattern compared to controls (9 out of 25).
  • Six patients with TMJ dysfunction presented with an anterior open bite, a condition not observed in the control group.
  • These findings indicate a strong association between TMJ dysfunction and specific aberrant swallowing behaviors.

Conclusions:

  • Aberrant swallowing patterns, particularly tongue-thrust swallowing, are significantly associated with temporomandibular joint dysfunction.
  • Individuals presenting with unusual swallowing mechanics should be evaluated for underlying TMJ dysfunction.
  • This research highlights the importance of considering oral motor behaviors in the diagnosis and management of TMJ disorders.