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Related Experiment Videos

Soft tissue changes with fixed functional appliances in Class II division 1.

Carlos Flores-Mir1, Michael P Major, Paul W Major

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

The Angle Orthodontist
|July 1, 2006
PubMed
Summary

Fixed functional appliances show statistically significant soft tissue profile changes in Class II division 1 malocclusion, but these may not be clinically meaningful. Further research is needed for definitive conclusions.

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Area of Science:

  • Orthodontics
  • Craniofacial Biology
  • Dental Research

Background:

  • Class II division 1 malocclusion is a common dental issue.
  • Fixed functional appliances are used to correct such malocclusions.
  • Understanding their impact on facial soft tissues is crucial for treatment outcomes.

Purpose of the Study:

  • To systematically review the literature on facial soft tissue changes following the use of fixed functional appliances in Class II division 1 malocclusion.
  • To assess the clinical significance of these soft tissue alterations.

Main Methods:

  • A comprehensive literature search was conducted across multiple electronic databases.
  • Inclusion criteria focused on clinical trials of fixed functional appliances without surgery or syndromic features, with untreated control groups.

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  • Four articles on Herbst appliances and one on Jasper Jumper met the criteria.

    • Main Results:

    • Fixed functional appliances demonstrated statistically significant changes in the soft tissue profile.
    • However, the magnitude of these changes might not be clinically relevant or perceptible.

    Conclusions:

    • The current evidence is of secondary quality, necessitating cautious interpretation.
    • Long-term, double-blinded, prospective randomized clinical trials are required.
    • Three-dimensional soft tissue analysis is recommended to enhance understanding.