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Related Experiment Videos

How effective is the combined activator-headgear treatment?

O Bondevik1

  • 1University of Oslo, Department of Orthodontics, Norway.

European Journal of Orthodontics
|December 1, 1991
PubMed
Summary

This retrospective study analyzed activator-headgear orthodontic treatment success. High failure rates were observed, with patient cooperation being the most critical factor for satisfactory outcomes.

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Area of Science:

  • Orthodontics
  • Craniofacial Growth

Background:

  • The activator-headgear combination is a common orthodontic appliance.
  • Understanding its success and failure rates is crucial for treatment planning.

Purpose of the Study:

  • To retrospectively analyze the frequency and causes of failure and success using activator-headgear as the sole orthodontic appliance.
  • To identify factors influencing treatment outcomes in patients treated between 1972-1982.

Main Methods:

  • Retrospective analysis of 78 patients (32 girls, 46 boys) treated with activator-headgear without initial fixed appliances.
  • Evaluation of treatment outcomes based on strict criteria for satisfactory results.
  • Assessment of patient cooperation levels.

Main Results:

  • Only 14 subjects (18%) achieved entirely satisfactory results.
  • Even among highly cooperative patients, less than 50% had satisfactory outcomes.
  • Poor or decreasing patient cooperation invariably led to unsatisfactory results.
  • Sex, treatment duration, and ulnar sesamoid bone ossification did not significantly impact results.

Conclusions:

  • Activator-headgear as a sole appliance has a high failure rate.
  • Patient cooperation is the most significant factor determining the success of activator-headgear treatment.
  • Further research may be needed to optimize treatment protocols or explore alternative approaches.

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