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Suctioning the Oropharyngeal Airway01:25

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Quantifying Upper Airway Changes Following Mandibular Orthognathic Surgery.

Nanda Kishore Sahoo1, Shiv Shankar Agarwal2, Sanjeev Datana2

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Mandibular advancement surgery significantly improved upper airway space and volume, while mandibular setback surgery had the opposite effect. Long-term airway changes should be integral to surgical planning.

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Area of Science:

  • Orthognathic surgery
  • Airway assessment
  • Craniofacial surgery

Background:

  • Orthognathic surgery alters facial structure, potentially impacting the upper airway.
  • Assessing airway changes is crucial for patient outcomes.

Purpose of the Study:

  • To quantify upper airway changes after mandibular advancement and setback surgery.
  • To compare the effects of advancement vs. setback on airway dimensions.

Main Methods:

  • Retrospective study of 50 patients undergoing mandibular orthognathic surgery.
  • Analysis of Lateral Cephalograms and Acoustic Pharyngometry at T0 and T1.
  • Measurement of linear airway parameters, hyoid position, mean area, and volume.

Main Results:

  • Mandibular advancement surgery significantly increased airway space (SAS, PAS) and volume.
  • Mandibular setback surgery showed inverse changes in airway parameters.
  • Hyoid bone position shifted, and airway volume/area increased with advancement.

Conclusions:

  • Mandibular advancement surgery positively impacts upper airway dimensions.
  • Mandibular setback surgery may adversely affect the airway.
  • Pre-surgical airway assessment and planning are vital for optimizing outcomes.