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Related Experiment Videos

Extraction, orthodontic treatment, and craniomandibular dysfunction.

J M Dibbets1, L T van der Weele

  • 1Department of Orthodontics, School of Dentistry, University of Groningen, The Netherlands.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|March 1, 1991
PubMed
Summary

Craniomandibular dysfunction (CMD) treatments like appliances and extractions did not cause long-term symptoms. Original growth patterns, not the treatments themselves, are linked to CMD development.

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Area of Science:

  • Dentistry
  • Orthodontics
  • Craniomandibular Dysfunction Research

Background:

  • Craniomandibular dysfunction (CMD) is a condition affecting the jaw joint and muscles.
  • Longitudinal studies are crucial for understanding the long-term effects of treatments on CMD.

Purpose of the Study:

  • To investigate the causal relationship between specific orthodontic treatments and the development of CMD signs and symptoms over 15 years.
  • To compare the incidence of CMD in relation to nonextraction, first premolar extraction, and other tooth extraction protocols.

Main Methods:

  • A 15-year prospective longitudinal study was conducted.
  • Data on signs and symptoms of CMD were systematically registered.
  • Treatment groups included removable appliances, Begg mechanics, chin cups, and various extraction patterns.

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Main Results:

  • No statistically significant evidence was found to support that removable appliances, Begg mechanics, or chin cups cause long-term CMD.
  • Tooth extraction itself was not identified as a direct cause of later CMD.
  • The original growth pattern influencing treatment decisions, rather than the extraction, was implicated in the frequency of CMD.

Conclusions:

  • Orthodontic treatments studied do not appear to be causal factors for long-term craniomandibular dysfunction.
  • Pre-existing growth patterns are more likely associated with the development of CMD than the orthodontic interventions themselves.