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Natural cervical inclination and craniofacial structure

M M Ozbek1, A Köklü

  • 1Department of Orthodontics, University of Ankara, Turkey.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|December 1, 1993
PubMed
Summary

Head posture and facial structure are linked, particularly with cervical spine inclination. This study found forward and vertical cervical posture influence head morphology, not head extension or flexion.

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Area of Science:

  • Dentistry
  • Orthodontics
  • Biomechanics

Background:

  • Understanding the relationship between head posture and facial morphology is crucial in orthodontics.
  • Previous studies have explored these associations with varying reference lines.

Purpose of the Study:

  • To investigate statistical associations between postural and morphologic variables of the head.
  • To analyze facial structure using both intracranial and extracranial reference lines.

Main Methods:

  • Cephalometric analysis of 106 dental students (aged 19-29) using natural head posture (NHP) imaging.
  • Evaluation of facial structure via NHP analysis with extracranial reference lines.
  • Statistical correlation between NSL reference inclination and sella turcica vertical localization.

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Main Results:

  • Facial structure, assessed with NHP and extracranial lines, correlated with cervical column inclination to the horizontal.
  • Head posture's NSL reference inclination was associated with sella turcica's vertical position (r = -724, p < 0.001).
  • These associations were independent of head extension or flexion.

Conclusions:

  • Head posture and facial structure associations are primarily driven by functional factors.
  • Forward and vertical cervical postures are key functional factors influencing head morphology.
  • The findings emphasize the role of cervical posture in craniofacial development and analysis.