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Related Experiment Videos

Posttreatment changes in different facial types

A R Zaher1, S E Bishara, J R Jakobsen

  • 1Department of Orthodontics, Faculty of Dentistry, Alexandria University, Egypt.

The Angle Orthodontist
|January 1, 1994
PubMed
Summary

Orthodontic treatment for Class II malocclusion showed minimal differences across short, average, and long facial types. Post-treatment changes were largely similar, suggesting no special retention needs based on facial morphology.

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Area of Science:

  • Orthodontics
  • Craniofacial Biology
  • Dentofacial Orthopedics

Background:

  • Class II, Division 1 malocclusion is a common dental anomaly.
  • Facial type can influence orthodontic treatment outcomes.
  • Understanding treatment-induced changes in different facial types is crucial for effective management.

Purpose of the Study:

  • To compare skeletal and dental changes during and after orthodontic treatment in short, average, and long facial types.
  • To evaluate the impact of facial morphology on treatment outcomes in Class II malocclusion.
  • To determine if different facial types necessitate distinct retention strategies post-treatment.

Main Methods:

  • Evaluation of 66 subjects with Class II, Division 1 malocclusion treated nonextraction with fixed edgewise appliances and extraoral forces.

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  • Lateral cephalograms and dental casts analyzed at pre-treatment, post-appliance removal, and at least two years post-treatment.
  • Measurement of various skeletal and dental parameters to assess treatment-induced changes.

    • Main Results:

    • Significant differences in post-treatment changes were not observed among the three facial types, with few exceptions.
    • Long face types showed a tendency for increased maxillary incisor protrusion, while short face types showed a decrease.
    • Long face females exhibited greater increases in anterior face height and decreases in maxillary arch length compared to other groups. Males showed greater increases in linear face height measurements than females.

    Conclusions:

    • Facial type has a limited impact on the overall post-treatment changes following nonextraction orthodontic correction of Class II malocclusion.
    • Observed differences in specific parameters between facial types do not warrant specialized retention protocols.
    • Individual variation in treatment response is significant, irrespective of facial type.