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Related Experiment Videos

The skeletodental adaptations in deep bite correction.

E H McDowell1, I M Baker

  • 1Department of Growth and Special Care, School of Dentistry, University of Louisville, Ky.

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

Orthodontic deep bite correction shows growing patients experience significant molar extrusion and mandibular development, unlike adults. This suggests growth influences treatment stability and skeletal changes.

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Area of Science:

  • Dentistry
  • Orthodontics
  • Craniofacial Biology

Background:

  • Deep bite malocclusion affects facial aesthetics and function.
  • Orthodontic treatment aims to correct deep bites, but stability can vary with patient age.
  • Understanding skeletal and dental responses in different maturational stages is crucial for treatment planning.

Purpose of the Study:

  • To analyze skeletal and dental changes from orthodontic deep bite correction.
  • To compare treatment responses between adolescent (growing) and adult (non-growing) patients.
  • To identify factors contributing to treatment stability in growing individuals.

Main Methods:

  • Retrospective analysis of 30 non-extraction cases with excessive overbite.
  • Patients divided into two groups: 'growers' (average age 12.2) and 'nongrowers' (average age 26.7).

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  • Deep bite correction using leveling with conventional archwires, with adjuncts like headgear or elastics as indicated.

    • Main Results:

    • Adolescent patients (growers) showed an average molar extrusion of 4.7 mm, with no change in mandibular plane angle due to posterior mandibular development.
    • Adult patients (nongrowers) had minimal molar extrusion (1.3 mm) and did not maintain their original mandibular plane angle.
    • Growing patients exhibited greater posterior mandibular development compared to non-growing patients.

    Conclusions:

    • Orthodontic correction of deep bite in growing patients leads to significant molar extrusion and favorable mandibular development.
    • The observed posterior mandibular growth in adolescents contributes to maintaining the mandibular plane angle during treatment.
    • Age-related differences in skeletal response impact the stability of deep bite correction outcomes.