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Relationships between facial divergence and DMD parameters.

Abdelali Halimi1, Hicham Benyahia1, Mohamed-Faouzi Azeroual1

  • 1Université Mohammed V (UM5) of Rabat, équipe de recherche en biotechnologie et biomatériaux en milieu buccal, service d'orthopédie dento-faciale, faculté de médecine dentaire, centre hospitalier Ibn-Sina, Rabat-Instituts, BP 6212, Madinat Al Irfane, Rabat, Morocco.

International Orthodontics
|November 11, 2017
PubMed
Summary

Facial divergence is moderately correlated with dental crowding and incisor positioning in young adults. Hypodivergent individuals exhibit less crowding and a more pronounced curve of Spee, while hyperdivergent individuals show increased incisor labioversion.

Keywords:
CrowdingCurve of SpeeDentomaxillary discrepancyFacial divergenceIncisor repositioningStatistical correlation

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Area of Science:

  • Orthodontics
  • Dentofacial Orthopedics
  • Cephalometrics

Background:

  • Facial divergence influences dentofacial structures.
  • Understanding its impact on dentomaxillary discrepancy (DMD) is crucial for orthodontic treatment planning.

Purpose of the Study:

  • To investigate the relationship between facial divergence and key DMD parameters.
  • Specifically examining crowding, curve of Spee, and sagittal incisor position.

Main Methods:

  • Cephalometric analysis of 90 young adult Moroccan orthodontic patients.
  • Measurements included vertical and sagittal angles, curve of Spee, and dental crowding.
  • Statistical analysis involved ANOVA, Bonferroni tests, and correlation analysis.

Main Results:

  • Hypodivergent subjects showed significantly less crowding (P<0.05).
  • Hyperdivergent subjects displayed more labioversion/vestibular positioning of incisors (P<0.05).
  • Crowding and incisor position correlated moderately with facial divergence (r=0.3-0.5, P<0.05).

Conclusions:

  • Facial divergence is a significant factor in dentomaxillary discrepancy.
  • Findings aid in predicting and managing crowding and incisor alignment in orthodontic patients.