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Author Spotlight: Insights into an Efficient Murine Maxillary Orthodontic Model Protocol
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Frequency of orthodontic extraction.

Camila de S Dardengo1, Luciana Q P Fernandes1, Jonas Capelli Júnior2

  • 1Department of Orthodontics, Universidade Estadual do Rio de Janeiro, Rio de Janeiro, Brazil.

Dental Press Journal of Orthodontics
|March 24, 2016
PubMed
Summary

Orthodontic treatment involving tooth extraction has decreased by 20% over 32 years, with first premolars most commonly removed. Despite this trend, extractions remain indicated for specific orthodontic cases.

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Area of Science:

  • Dentistry
  • Orthodontics
  • Public Health

Background:

  • The debate surrounding orthodontic dental extractions spans over a century, with fluctuating treatment philosophies.
  • Modern orthodontic approaches increasingly aim to avoid tooth extractions.

Purpose of the Study:

  • To analyze the frequency of tooth extraction in orthodontic treatment from 1980 to 2011.
  • To assess trends in orthodontic extraction frequency at the Orthodontic Clinic of Universidade Estadual do Rio de Janeiro (UERJ).

Main Methods:

  • Retrospective analysis of 1484 patient records from the UERJ Orthodontic Clinic.
  • Evaluation of extraction frequency based on sex, Angle's classification, extraction patterns, and treatment start period.
  • Statistical analysis using Chi-square tests to identify correlations and trends.

Main Results:

  • A significant reduction of approximately 20% in orthodontic extraction frequency was observed over the 32-year study period.
  • First premolars were the most commonly extracted teeth.
  • Class II malocclusion patients had higher extraction rates compared to Class I patients; no significant sex-based differences were found.

Conclusions:

  • Evolving orthodontic techniques and aesthetic considerations have contributed to a decline in extraction rates.
  • Despite the trend, dental extractions remain a valid and necessary treatment option for specific orthodontic indications.