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Changes in Upper Airway Volume Following Orthognathic Surgery
Lillian Marcussen1, Kasper Stokbro, Esben Aagaard
1Department of Oral and Maxillofacial Surgery, Odense University Hospital, Odense, Denmark.
The Journal of Craniofacial Surgery
|November 29, 2016
Summary
Orthognathic surgery can increase upper airway volume, potentially improving obstructive sleep apnea. However, some patients may still experience airway impairment, necessitating personalized surgical planning.
Area of Science:
- Oral and Maxillofacial Surgery
- Sleep Medicine
- Medical Imaging
Background:
- Reduced facial skeletal dimensions are linked to obstructive sleep apnea (OSA).
- Careful airway assessment is crucial in orthognathic treatment planning.
Purpose of the Study:
- To evaluate changes in upper airway volume after virtually planned orthognathic surgery.
- To identify factors influencing airway volume changes post-surgery.
Main Methods:
- Retrospective pilot study of 30 patients undergoing orthognathic surgery.
- Cone-beam computed tomography (CBCT) scans pre- and post-surgery.
- Measurement of total upper airway volume and cross-sectional areas at key pharyngeal levels.
Main Results:
- Orthognathic surgery significantly increased minimum cross-sectional airway area (83 mm² to 102 mm²).
- Improved airway volume observed in 87% of patients with neutral/distal occlusions versus 57% with mesial occlusion.
Conclusions:
- Virtually planned orthognathic surgery generally enhances upper airway volume.
- Individualized surgical planning may be required to optimize airway outcomes and mitigate residual impairment.
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