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Related Experiment Videos

Functional appliances and arch width.

S L Gibbs1, N P Hunt

  • 1Mayday University Hospital, London.

British Journal of Orthodontics
|May 1, 1992
PubMed
Summary
This summary is machine-generated.

This study compared the effects of Andresen, Bionator, and Fränkel functional appliances on dental arch width. Results show how these appliances influence arch dimensions during and after orthodontic treatment.

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Area of Science:

  • Orthodontics
  • Dental Arch Development
  • Craniofacial Orthopedics

Background:

  • Functional appliances are used to correct malocclusions.
  • Different appliances may have varying effects on dental arch dimensions.
  • Long-term effects on arch width are crucial for treatment stability.

Purpose of the Study:

  • To compare the effects of Andresen, Bionator, and Fränkel functional appliances on dental arch width.
  • To evaluate arch width changes during and after treatment.
  • To assess the stability of arch width changes post-treatment.

Main Methods:

  • Retrospective study of 27 Andresen, 19 Bionator, and 23 Fränkel cases.
  • Arch width measured using a reflex metrograph on study models.
  • Measurements taken at the start, end (including retention), and at least 1 year post-treatment.

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Main Results:

  • Comparison of arch width changes between the three functional appliance groups.
  • Analysis of dimensional changes during the active treatment phase.
  • Evaluation of arch width stability in the retention and post-treatment phases.

Conclusions:

  • The study provides comparative data on the influence of different functional appliances on arch width.
  • Understanding these effects aids in selecting appropriate appliances for optimal orthodontic outcomes.
  • Long-term stability of arch width is a key consideration in functional appliance therapy.