Are we able to predict airway dimensional changes in isolated mandibular setback?

The goal of this study was to determine whether a relationship exists between the amount of mandibular setback and the amount of airway dimensional changes. Records and cone beam computed tomography (CBCT) of patients who had undergone isolated bilateral sagittal split osteotomy setback between Janu...

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Bibliographic Details
Published in:International journal of oral and maxillofacial surgery 2022-04, Vol.51 (4), p.487-492
Main Authors: Han, M.D., Antonini, F., Borba, A.M., Miloro, M.
Format: Article
Language:English
Subjects:
Cephalometry - methods
cone beam computed tomography
Cone-Beam Computed Tomography - methods
Humans
Malocclusion, Angle Class III - surgery
Mandible - diagnostic imaging
Mandible - surgery
mandibular osteotomy
obstructive sleep apnea
orthognathic surgery
Orthognathic Surgical Procedures - methods
Osteotomy, Sagittal Split Ramus - methods
Pharynx - diagnostic imaging
Retrospective Studies
sagittal split ramus osteotomy
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Summary:The goal of this study was to determine whether a relationship exists between the amount of mandibular setback and the amount of airway dimensional changes. Records and cone beam computed tomography (CBCT) of patients who had undergone isolated bilateral sagittal split osteotomy setback between January 1, 2013 and March 16, 2020 at a single institution were reviewed retrospectively. The primary outcome variable was upper airway volume dimension change, and the predictor variable was the magnitude of mandibular setback as measured by six different methods. Thirty-one patients were included in the study, with a mean mandibular setback ranging from 1.41 mm to 6.11 mm. None of the predictor variables showed an association with oropharyngeal (P = 0.54) or hypopharyngeal (P = 0.33) volume. Stepwise regression analysis failed to show any significant relationships. Similarly, there was no statistically significant association between any of the predictor variables and oropharyngeal (P = 0.44) or hypopharyngeal (P = 0.74) minimum axial area. The results showed that no correlation exists between the magnitude of mandibular setback and the amount of static airway dimensional changes; therefore, it may not be possible to predict whether obstructive sleep apnea will develop following mild to moderate mandibular setback based upon CBCT measurements.
ISSN:0901-5027
1399-0020
DOI:10.1016/j.ijom.2021.07.015