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Related Experiment Videos

Soft tissue profile changes in late adolescent males

T F Foley1, P G Duncan

  • 1University of Western Ontario, London, Canada.

The Angle Orthodontist
|January 1, 1997
PubMed
Summary

Facial growth in adolescent males shows differential hard and soft tissue changes, with the chin advancing most. These changes influence orthodontic treatment planning and retention needs.

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Area of Science:

  • Orthodontics
  • Craniofacial Growth
  • Cephalometric Analysis

Background:

  • Understanding adolescent facial growth is crucial for effective orthodontic treatment.
  • Previous studies have indicated changes in soft tissue profiles during adolescence.

Purpose of the Study:

  • To document soft tissue profile changes in late adolescent males (14-20 years).
  • To compare soft tissue changes with underlying hard tissue development.
  • To assess the impact of these changes on orthodontic treatment planning.

Main Methods:

  • Serial lateral cephalograms of 33 untreated Class I adolescent males were analyzed.
  • 26 soft and hard tissue parameters were measured across three age intervals (14-16, 16-18, 18-20 years).

Main Results:

  • Differential hard tissue growth occurred from nasion to pogonion, with the chin showing the most forward movement.
  • Soft tissue profiles flattened due to differential hard tissue advancement and horizontal thickening.
  • Significant nasal tip growth was observed, decreasing with age.

Conclusions:

  • Soft tissue profile changes from age 14 to 20 are primarily driven by underlying skeletal growth.
  • These dynamic changes necessitate careful consideration in orthodontic treatment planning, post-treatment profile maintenance, and retention strategies.

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