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Obstructive sleep apnoea: a cephalometric study. Part I. Cervico-craniofacial skeletal morphology

Vivat Tangugsorn, Olav Skatvedt, Olaf Krogstad, Torstein Lyberg
DOI: http://dx.doi.org/10.1093/ejo/17.1.45 45-56 First published online: 1 February 1995


SUMMARY A comprehensive cephalometric analysis of cervico-craniofacial skeletal morphology in 100 male patients with obstructive sleep apnoea (OSA) and 36 male controls was performed. The significant aberrations in the OSA group feature:

  1. shorter dimension of cranial base with slight counter-clockwise rotation and depression of clivus;

  2. shorter maxillary length with normal height;

  3. maxillo-mandibular retrognathia related to nasion perpendicular plane (N⊥FH) despite normal angles of prognathism;

  4. 47 per cent of the OSA group had mandibular retrognathia;

  5. increased anterior lower facial height and mandibular plane angle;

  6. reduced size of bony pharynx;

  7. inferiorly positioned hyoid bone at C4–C6 level;

  8. deviated head posture with larger cranio-cervical angle.

Cephalometric analysis is highly recommended in OSA patients as one of the most important tools in diagnosis and treatment planning.

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