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Related Experiment Videos

The vertical dimension: the "low-angle" patient.

James L Vaden1

  • 1Department of Orthodontics, College of Dentistry, University of Tennessee, 875 Union, Memphis, TN 38163, USA. jvaden@utmem.edu

World Journal of Orthodontics
|June 15, 2005
PubMed
Summary

For patients with reduced anterior facial height, maintaining mandibular incisor position is crucial for facial balance. Specific extraction strategies are necessary to avoid compromising this balance during orthodontic treatment.

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Treatment change comparisons between skeletal Class I and II white adolescents with 3 different vertical divergencies-part 1: Frankfort-Mandibular Incisor Angle (FMIA) and soft-tissue profile.

American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics·2023
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Thomas D. Pryse, 1925-2020.

American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics·2021
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The congenitally missing second premolar: Space closure. A viable option.

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Authors' response.

American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics·2019
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Class II correction: Extraction or nonextraction?

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Area of Science:

  • Dentistry
  • Orthodontics
  • Facial Aesthetics

Background:

  • Facial height discrepancies, specifically diminished anterior and excess posterior facial height, present unique orthodontic challenges.
  • Standard orthodontic approaches may compromise facial balance in these patients.

Observation:

  • Mandibular incisor position is critical for maintaining facial balance in patients with vertical facial discrepancies.
  • Proclining mandibular incisors to resolve crowding or level the curve of Spee can negatively impact facial aesthetics.

Findings:

  • Three common diagnostic and treatment strategies are identified: third molar extraction, maxillary first premolar and mandibular third molar extraction, and maxillary first premolar and mandibular second premolar extraction.
  • The rationale behind these specific extraction choices is explored to preserve pretreatment mandibular incisor positions.

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Implications:

  • Understanding these diagnostic nuances is essential for successful orthodontic treatment planning in patients with vertical facial anomalies.
  • Case reports illustrate the application and outcomes of these specialized treatment approaches.