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Growth changes in the soft tissue facial profile.

R S Nanda1, H Meng, S Kapila

  • 1Department of Orthodontics, University of Oklahoma, Oklahoma City 73190.

The Angle Orthodontist
|January 1, 1990
PubMed
Summary

Facial soft tissue growth in Caucasian children aged 7-18 shows significant differences between sexes. Males experienced greater increases in nose and lip thickness, while females showed more overall growth relative to adult size.

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Area of Science:

  • Orthodontics
  • Craniofacial Growth
  • Pediatric Dentistry

Background:

  • Understanding longitudinal soft tissue facial growth is crucial for orthodontic diagnosis and treatment planning.
  • Previous studies have provided insights into skeletal and dental changes, but detailed soft tissue analysis across adolescence is less common.

Purpose of the Study:

  • To analyze longitudinal changes in soft tissue facial profiles from age 7 to 18 in Caucasian individuals.
  • To compare growth patterns and final adult proportions between males and females.

Main Methods:

  • A cohort of 40 Caucasian subjects (17 males, 23 females) with Class I dentitions and balanced faces were studied.
  • Yearly cephalometric radiographs were taken from age 7 to 18, with no orthodontic treatment received.
  • Measurements included soft tissue thickness (nose, lips, chin) and lip length.

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Main Results:

  • Both males and females exhibited increases in soft tissue thickness and lip length, with varying rates and amounts.
  • Females generally achieved a greater percentage of their adult soft tissue size by age 18, except for chin inclination.
  • Males showed significantly greater increases in nose and upper lip thickness, with nasal growth continuing past age 18 in males.

Conclusions:

  • Significant sex-based differences exist in the timing and magnitude of soft tissue facial growth during adolescence.
  • Nasal and lip morphology exhibit distinct growth trajectories between males and females, impacting overall facial aesthetics.
  • These findings have implications for predicting facial development and guiding orthodontic interventions.