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Related Experiment Videos

Relapse revisited

J L Vaden1, E F Harris, R L Gardner

  • 1Center for the Health Sciences, University of Tennessee, Memphis, 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
|May 1, 1997
PubMed
Summary
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Long-term orthodontic treatment changes show minimal relapse after 6 years, with most changes resembling normal aging. Specialist treatment resulted in less irregularity than resident-treated cases.

Area of Science:

  • Orthodontics
  • Dental Research
  • Longitudinal Studies

Background:

  • Limited data exists on long-term orthodontic treatment outcomes beyond ten years.
  • Understanding post-treatment dental stability is crucial for patient satisfaction and retention of results.

Purpose of the Study:

  • To quantify changes in tooth relationships 6 and 15 years post-orthodontic treatment.
  • To investigate factors influencing long-term orthodontic stability and relapse.

Main Methods:

  • Retrospective analysis of 36 orthodontic cases.
  • Assessment of tooth relationships at 6 and 15 years post-treatment.
  • Correlation analysis with jaw growth patterns.

Main Results:

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  • The rate of change in tooth relationships decreased significantly over time.
  • Most post-treatment changes were comparable to normal aging processes.
  • Minor, significant associations found between incisor irregularity and parasagittal jaw growth, particularly when mandibular growth outpaced maxillary growth.
  • Cases treated by a single specialist exhibited less relapse compared to those treated by multiple residents in university settings.

    • Conclusions:

    • Orthodontic relapse primarily occurs early post-treatment, with later changes often attributable to aging.
    • Parasagittal jaw growth dynamics can influence long-term incisor stability.
    • Experienced specialist care may lead to superior long-term orthodontic treatment outcomes.