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Related Experiment Videos

Mandibular dysfunction in adulthood in relation to morphologic malocclusion at adolescence.

S Helm1, P E Petersen

  • 1Institute for Community Dentistry and Graduate Studies, Royal Dental College, Copenhagen, Denmark.

Acta Odontologica Scandinavica
|October 1, 1989
PubMed
Summary

Childhood malocclusion traits persisting into adulthood do not predict severe mandibular dysfunction. This 20-year study found limited value in orthodontic screening for predicting adult jaw dysfunction.

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Area of Science:

  • Dentistry
  • Orthodontics
  • Epidemiology

Background:

  • Malocclusion, a condition of improperly aligned teeth and jaws, is common in adolescence.
  • The long-term association between persistent malocclusion and adult mandibular dysfunction remains unclear.
  • Early identification of individuals at risk for temporomandibular disorders (TMD) is crucial for timely intervention.

Purpose of the Study:

  • To investigate the 20-year relationship between persistent morphologic malocclusion from adolescence to adulthood and the risk of severe mandibular dysfunction.
  • To determine if specific malocclusion traits predict the development of persistent and severe functional disorders.
  • To evaluate the predictive value of childhood orthodontic screening for adult jaw dysfunction.

Main Methods:

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  • A longitudinal cohort study followed 176 individuals from adolescence (1965-66) to adulthood (approx. 35 years).
  • Malocclusion was assessed in adolescence and again in adulthood (1986-87).
  • Self-reported symptoms of functional disorders were collected via questionnaire in 1981, with clinical signs of dysfunction registered in 1986-87.

    • Main Results:

    • Significant associations were found between some self-reported symptoms and clinically registered signs of dysfunction 5-6 years later.
    • Spearman correlation coefficients indicated generally low associations between persistent malocclusion traits and signs of mandibular dysfunction.
    • No significant association was identified between the most severe, persistent functional disorders and any specific malocclusion type.

    Conclusions:

    • Persistent morphologic malocclusion from adolescence into adulthood has limited value in predicting the development of severe mandibular dysfunction.
    • Orthodontic screening for malocclusion in childhood appears to have limited utility in predicting adult jaw dysfunction.
    • Further research may be needed to identify more reliable predictors of adult mandibular dysfunction.