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Nasorespiratory function and head posture

J A Huggare1, M T Laine-Alava

  • 1Department of Orthodontics, School of Dentistry, Karolinska Institutet, Huddinge, Sweden. Jan.Huggare@Ortped.ki.se

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 5, 1997
PubMed
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This study found that larger nasal airways correlate with increased head extension, specifically enlarged craniocervical angulation and forward cervical spine inclination. These findings challenge previous assumptions about nasal breathing and head posture in young adults.

Area of Science:

  • Physiology
  • Orthodontics
  • Respiratory Medicine

Background:

  • Impaired nasal breathing is linked to altered human head posture.
  • Understanding this relationship is crucial for diagnosing and treating related conditions.

Purpose of the Study:

  • To investigate the association between nasorespiratory function and head posture variables in young adults.
  • To experimentally confirm theoretical mechanisms linking nasal airway size to head positioning.

Main Methods:

  • Utilized the pressure flow technique to measure nasal airflow and pressure, determining nasal airway cross-sectional area.
  • Employed natural head position roentgenocephalometry to assess craniovertical (NSL/VER), craniocervical (NSL/OPT), and cervical spine inclination (OPT/HOR) angles.

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Main Results:

  • A trend indicated larger nasal cross-sectional areas were associated with increased craniocervical angulation.
  • A tendency towards forward inclination of the cervical spine was observed in individuals with larger nasal airways.
  • These results contrast with the general opinion regarding reduced upper airway size and head posture.

Conclusions:

  • The study provides experimental evidence supporting a mechanism where increased head extension occurs in individuals with nasal obstruction.
  • Findings suggest a complex interplay between nasal respiratory function and craniofacial and cervical spine alignment.
  • Further research is warranted to fully elucidate the implications of these findings for clinical practice.