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[Upper airway changes after mandibular setback osteotomy. Concerns for obstructive sleep apnea].

J R Paoli1, F Lauwers, V Cances

  • 1Service de stomatologie et chirurgie maxillo-faciale, Hôpital Rangueil, CHU Toulouse.

Revue De Stomatologie Et De Chirurgie Maxillo-Faciale
|September 12, 2000
PubMed
Summary

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Mandibular setback osteotomy can alter upper airway dimensions, potentially increasing obstructive sleep apnea risk. Surgeons must consider airway structure due to variable patient outcomes.

Area of Science:

  • Oral and Maxillofacial Surgery
  • Sleep Medicine
  • Cephalometric Analysis

Background:

  • Obstructive sleep apnea syndrome has been reported following mandibular setback osteotomy.
  • These rare occurrences highlight the need to consider upper airway anatomy during such procedures.

Purpose of the Study:

  • To investigate the modifications in upper airway dimensions after mandibular setback osteotomy for dysmorphism.

Main Methods:

  • A retrospective cephalometric study of 25 patients.
  • Digitalized preoperative and postoperative radiographs were used for precise measurements.
  • Statistical analysis focused on airway parameters and influencing factors.

Main Results:

  • A reduction in the retrolingual space (mean 1.7 mm) and hyoid bone displacement were observed.

Related Experiment Videos

  • Modifications were dependent on gonial angle variations, not directly on mandibular setback.
  • 20% of cases showed paradoxical airway enlargement.

    • Conclusions:

    • Mandibular setback osteotomy can create conditions favoring obstructive sleep apnea.
    • Significant variability exists in surgical effects on upper airways.
    • The risk of apnea should be a key consideration for setback osteotomy indications.