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Class III malocclusions: the choice between orthodontics or surgery

P F McSherry1

  • 1Department of Clinical Orthodontics, Royal Group of Hospitals, Belfast.

Journal of the Irish Dental Association
|January 1, 1997
PubMed
Summary

Successful orthodontic treatment for Class III malocclusions depends on factors like low maxillomandibular angle and symmetric growth. Unfavorable growth and large negative overjet often lead to treatment failure, necessitating careful consideration of orthopedic versus surgical options.

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Area of Science:

  • Orthodontics
  • Dentofacial Orthopedics
  • Craniofacial Growth

Background:

  • Class III malocclusions present complex treatment challenges.
  • Understanding factors influencing treatment success is crucial for effective management.
  • Distinguishing between orthodontic and surgical candidacy is essential.

Purpose of the Study:

  • To outline and discuss the scope of orthopedic appliance treatment for Class III malocclusions.
  • To identify positive and negative factors influencing the choice between orthodontic and surgical treatment.
  • To examine the stability of treated Class III malocclusions.

Main Methods:

  • Review of factors associated with successful orthodontic treatment.
  • Analysis of factors leading to treatment failure in Class III malocclusions.

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  • Discussion of orthopedic appliance treatment efficacy and limitations.
  • Evaluation of criteria for orthodontic versus surgical intervention.
  • Assessment of long-term treatment stability.

    • Main Results:

    • Successful orthodontic outcomes are associated with a low Maxillomandibular planes angle, minimal compensation, small reverse overjet, and symmetric growth.
    • Treatment failure is linked to unfavorable growth patterns, high degrees of compensation, and large negative overjets.
    • The decision for orthopedic versus surgical treatment involves weighing various positive and negative influencing factors.

    Conclusions:

    • Orthodontic treatment success in Class III malocclusions is contingent upon specific skeletal and dental parameters.
    • Orthopedic appliances offer a treatment modality for Class III malocclusions, with success dependent on case selection.
    • Careful consideration of growth patterns, overjet, and compensation is vital for achieving stable and successful Class III malocclusion treatment outcomes.