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Mandibular function before orthodontic treatment.

M Olsson1, B Lindqvist

  • 1Orthodontic Clinic, Public Health Services, Umeà, Sweden.

European Journal of Orthodontics
|February 1, 1992
PubMed
Summary
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Orthodontic patients exhibit a higher prevalence of moderate to severe craniomandibular disorders (CMD) and related symptoms compared to individuals with minor treatment needs. This suggests orthodontic treatment may increase the risk of developing CMD.

Area of Science:

  • Dentistry
  • Orthodontics
  • Craniomandibular Disorders

Background:

  • Craniomandibular disorders (CMD) are a group of conditions affecting the jaw joint and muscles.
  • The prevalence and risk factors for CMD in orthodontic patients require further investigation.

Purpose of the Study:

  • To compare the prevalence of masticatory system dysfunction and symptoms between orthodontic patients and a control group.
  • To identify potential risk factors for CMD within the orthodontic patient population.

Main Methods:

  • A prospective study involving 245 orthodontic patients and 245 matched controls.
  • Functional examination of the masticatory system using the Helkimo index (1974).
  • Assessment of CMD signs and symptoms.

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Main Results:

  • 33.5% of orthodontic patients had moderate CMD, versus 21.6% of controls.
  • 18.9% of patients had severe CMD, versus 7.8% of controls.
  • Symptoms of CMD were more frequent in older female orthodontic patients.

Conclusions:

  • Orthodontic patients demonstrate a significantly higher risk of developing craniomandibular disorders (CMD).
  • Age and sex appear to influence the prevalence of CMD signs and symptoms in orthodontic patients.
  • Further research is warranted to understand the causal relationship between orthodontic treatment and CMD.