Quantification of volumetric, surface area and linear airway changes after orthognathic surgery: a preliminary study

Year 2018, Volume: 52 Issue: 1, 33 - 38, 03.01.2018

Mehmet Ali Altay Faisal A. Quereshy Jonathan T. Williams Humzah A. Quereshy Öznur Özalp Dale A. Baur

Abstract

DOI: 10.26650/eor.2018.28870

Purpose

The aim of this study was to conduct a
retrospective evaluation of the volumetric, cross-sectional surface area and
the linear airway changes in healthy subjects undergoing orthognathic surgery.

Materials and methods

A total of 10 patients were included in
this study and categorized into two groups. The first group consisted of five
patients who underwent maxillary and mandibular advancements (MMA) with
genioplasty. The remaining five patients who underwent maxillary advancement
with mandibular setback (MAMS) comprised the second group. The changes in
airway volume, surface area, and linear values obtained from defined hard and
soft tissue parameters were evaluated using preoperative and postoperative
cone-beam computed tomography. A paired t-test was used to explore the
statistical significance.

Results

A statistically significant increase in the
airway volume (34.3%) was observed in the MMA group. The changes in the MAMS
group were not statistically significant, although an average volumetric
decrease of 8.8% was observed. The minimal axial surface area measurements in
the MMA group at the levels of the soft palate and the tongue were
significantly increased (56.8% and 44.9%, respectively). However, MAMS resulted
in no significant changes at these levels (11.2% and 9.1% decrease,
respectively). Linear changes showed a statistically significant increase in
the airway in the MMA group, whereas the same measurements failed to produce
significant changes in the MAMS group.

Conclusion

As there were no significant changes in the
measured parameters, surgeons can have greater confidence that MAMS does not
have any negative influence on the airway.

Keywords

Volumetric, linear, surface area, airway changes, orthognathic surgery

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