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Related Experiment Videos

[Head posture in lateral roentgen image].

U Hirschfelder1, H Hirschfelder

  • 1Poliklinik für Kieferorthopädie, Universität Erlangen-Nürnberg.

Fortschritte Der Kieferorthopadie
|October 1, 1991
PubMed
Summary

Head posture analysis in orthodontic patients revealed significant differences between standardized and natural head positions. Natural head posture was generally more proclined, with Class III malocclusion linked to extended head posture.

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Area of Science:

  • Orthodontics
  • Craniofacial Morphology
  • Cervical Spine Biomechanics

Background:

  • Accurate assessment of head posture is crucial in orthodontics for diagnosis and treatment planning.
  • Standardized cephalometric radiography and natural head position (NHP) imaging techniques can yield different cranio-cervical measurements.
  • Understanding variations in head posture across different malocclusion classes is important for individualized treatment.

Purpose of the Study:

  • To compare head posture measurements derived from standardized cephalograms versus lateral cephalograms in natural head position (NHP).
  • To investigate potential differences in cranio-vertical and cranio-cervical parameters between these two imaging methods.
  • To examine the relationship between head posture and malocclusion classes (I, II, III) and assess upper cervical spine mobility.

Main Methods:

  • Cervico-cephalometric analysis of 61 untreated orthodontic patients.
  • Comparison of lateral cephalograms taken in standardized versus natural head positions.
  • Radiographic assessment of upper cervical spine mobility (flexion/extension) in 48 patients.

Main Results:

  • Significant differences were observed in cranio-vertical and cranio-cervical parameters between standardized and NHP cephalograms.
  • On average, head posture was more proclined in the natural head position compared to the standardized position.
  • Patients with Class III malocclusion exhibited a tendency towards more extended head posture relative to Class I or II malocclusions.

Conclusions:

  • Head posture assessment differs based on the cephalometric method used (standardized vs. NHP).
  • NHP appears to result in a more proclined average head posture.
  • Observed atlas positions related to cervical spine mobility were not considered pathological fixed malpositions.

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