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Related Experiment Videos

Long-term skeletal changes with rapid maxillary expansion: a systematic review.

Manuel O Lagravere1, Paul W Major, Carlos Flores-Mir

  • 1Orthodontic Graduate Program, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada.

The Angle Orthodontist
|February 2, 2006
PubMed
Summary

Rapid maxillary expansion (RME) shows long-term transverse skeletal gains, particularly in younger patients. However, RME does not significantly alter anteroposterior or vertical jaw positions, with limited evidence available.

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Area of Science:

  • Orthodontics
  • Craniofacial Development
  • Dental Research

Background:

  • Rapid maxillary expansion (RME) is a common orthodontic procedure.
  • Understanding long-term skeletal changes post-RME is crucial for treatment efficacy.
  • Previous studies have yielded mixed results regarding the stability of RME outcomes.

Purpose of the Study:

  • To systematically evaluate long-term skeletal changes in transverse, anteroposterior, and vertical dimensions following rapid maxillary expansion.
  • To assess the stability of skeletal changes induced by RME without concurrent surgical or other treatments.

Main Methods:

  • Systematic review of clinical trials using cephalometric analysis to assess skeletal changes.
  • Comprehensive search of multiple electronic databases.

Related Experiment Videos

  • Inclusion of studies with adequate control groups to account for growth; exclusion of studies with methodological flaws.

    • Main Results:

    • Limited to three articles meeting inclusion criteria, with noted methodological weaknesses.
    • Long-term transverse skeletal increase averaged approximately 25% of total dental expansion in prepubertal adolescents.
    • No clinically significant anteroposterior or vertical skeletal changes were observed post-RME.

    Conclusions:

    • Rapid maxillary expansion can lead to stable long-term transverse skeletal gains, especially in less skeletally mature individuals.
    • RME does not appear to induce significant long-term anteroposterior or vertical skeletal modifications.
    • The current evidence is of secondary quality, necessitating cautious interpretation and highlighting the need for high-quality, long-term randomized clinical trials.