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Mandibular function before and after orthodontic treatment

M Olsson1, B Lindqvist

  • 1Orthodontic Clinic, Umeå University, Sweden.

European Journal of Orthodontics
|June 1, 1995
PubMed
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Orthodontic treatment positively influences mandibular function, significantly reducing temporomandibular disorders (TMD) symptoms. Post-treatment, fewer patients exhibited moderate or severe mandibular dysfunction, indicating improved oral health outcomes.

Area of Science:

  • Dentistry
  • Orthodontics
  • Oral and Maxillofacial Surgery

Background:

  • Temporomandibular disorders (TMD) are common, affecting mandibular function.
  • Orthodontic treatment's impact on TMD requires further investigation.
  • Longitudinal studies are crucial for understanding treatment effects on oral health.

Purpose of the Study:

  • To evaluate the influence of orthodontic treatment on mandibular function.
  • To assess changes in temporomandibular disorder (TMD) signs and symptoms after orthodontic intervention.
  • To analyze TMD prevalence based on age and gender before and after treatment.

Main Methods:

  • A longitudinal study of 210 orthodontic patients was conducted.
  • Functional examinations were performed using the Carlsson and Helkimo (1972) and Helkimo (1974) criteria.

Related Experiment Videos

  • Data were collected before and after orthodontic treatment, with subgroup analysis by age and gender.

    • Main Results:

    • Prevalence of TMD symptoms decreased from 16.7% to 6.7% post-treatment.
    • Subjects without TMD signs/symptoms increased from 26.7% to 46.2%.
    • Moderate and severe mandibular dysfunction reduced significantly, with higher initial TMD prevalence in older patients and girls.

    Conclusions:

    • Orthodontic treatment is associated with a reduction in temporomandibular disorders (TMD).
    • The study highlights improvements in mandibular function and a decrease in TMD prevalence post-orthodontic intervention.
    • Gender and age influence TMD prevalence, with girls and older adolescents showing higher rates initially.