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Arch width and form: a review.

R T Lee1

  • 1Orthodontic Department, The Dental Institute, The Royal Hospitals NHS Trust, New Road, Whitechapel, London, E1 1BB, United Kingdom.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|March 6, 1999
PubMed
Summary
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Limited arch expansion is achievable in growing patients, especially when correcting crossbites and Class II malocclusions. Careful patient selection is crucial for successful dental arch dimension changes.

Area of Science:

  • Orthodontics and Dental Arch Development
  • Craniofacial Growth and Malocclusion

Background:

  • Literature review indicates varied opinions on altering dental arch dimensions.
  • Inconsistent findings may stem from differences in sample sizes, treatment mechanics, and retention protocols.

Purpose of the Study:

  • To synthesize current literature on the potential for dental arch dimension changes.
  • To identify factors influencing successful arch expansion.
  • To present clinical cases illustrating trends in arch dimension modification.

Main Methods:

  • Comprehensive review of existing scientific literature on orthodontic arch expansion.
  • Analysis of common findings across studies.
  • Presentation of illustrative clinical case examples.

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Main Results:

  • Consistent evidence supports the possibility of achieving limited degrees of dental arch expansion.
  • Successful arch expansion is most predictable in growing patients.
  • Correction of specific malocclusions (e.g., crossbites, Class II) and achieving good intercuspation without extractions are favorable outcomes.

Conclusions:

  • Limited arch expansion is a feasible orthodontic treatment outcome.
  • Careful patient selection, particularly focusing on growth potential and specific malocclusion types, is essential for predictable results.
  • Arch expansion can be effectively integrated into treatment plans for growing patients, aiding in malocclusion correction and achieving optimal occlusion.