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Related Experiment Videos

Long-term profile changes in extraction and nonextraction patients.

Corbett K Stephens1, Jimmy C Boley, Rolf G Behrents

  • 1Tyler, Tex, USA.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|October 11, 2005
PubMed
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Orthodontic treatment involving tooth extraction or nonextraction shows no long-term soft tissue profile differences when patients achieve the same incisor position. Perceived changes did not correlate with cephalometric measurements.

Area of Science:

  • Orthodontics
  • Dentofacial Orthopedics
  • Facial Aesthetics

Background:

  • Tooth extraction is a common orthodontic procedure.
  • Long-term soft tissue profile changes after orthodontic treatment are of clinical interest.
  • Understanding post-treatment facial changes is crucial for patient satisfaction.

Purpose of the Study:

  • To compare long-term soft tissue profile changes between extraction and nonextraction orthodontic patients.
  • To evaluate if treatment modality impacts facial profile evolution over time.
  • To assess the correlation between perceived and measured profile changes.

Main Methods:

  • A cohort of 20 extraction and 20 matched nonextraction patients with long-term follow-up (average 15 years) was analyzed.
  • Posttreatment and long-term profile photos were assessed for perceived changes and preferences by orthodontists and laypeople.

Related Experiment Videos

  • Cephalometric analysis was used to measure actual soft tissue profile changes.

    • Main Results:

    • No significant cephalometric differences in long-term soft tissue profile changes were observed between extraction and nonextraction groups.
    • Males exhibited more retrusive lips and flatter profiles at long-term follow-up compared to females.
    • Perceived changes over time did not correlate with cephalometrically measured changes, and preferences were consistent across groups.

    Conclusions:

    • Orthodontic treatment modality (extraction vs. nonextraction) does not influence long-term soft tissue profile changes when incisor position and lip line are standardized.
    • The perception of facial profile changes by clinicians and laypeople is not directly related to objective cephalometric measurements.
    • Gender influences long-term soft tissue profile changes, with males showing a trend towards flatter profiles.