A new simple three-dimensional method to characterize upper airway in orthognathic surgery patient

Abstract

This new proposed definition of upper airway boundaries was shown to be technical feasible and tested to be reliable in measuring upper airway in patients undergoing orthognathic surgery.

Evaluation of factors that influence the success rate of OSA treatment with a customised adjustable MAD device - a retrospective study

“…Possible future improvements of the present protocol could be evaluation of other patient related parameters such as body mass and neck circumference 26 , and assessment of quality of life, since other parameters in addition to AHI can explain the clinical success of therapy 3 , 27 . Further studies could also take into account skeletal features 28 , 29 and volumetric assessment of the upper airway 30 , 31 .…”

The effect of altered head and tongue posture on upper airway volume based on a validated upper airway analysis—An MRI pilot study

“…The first author performed the UA analysis on each MRI scan applying a validated UA analysis. 31 The CBCT scans were applied in order to increase the accuracy of identifying and selecting the corresponding landmarks on the MRI-scans, and thus the CBCT scans served as a complementary quality assurance in this study.…”

“…Based on a validated and objective 3D UA evaluation protocol, the effect of altered head or tongue posture on the UA volume has not been thoroughly investigated although previous studies have highlighted this association 21,25,33,34 In order to perform comparable UA studies with reliable outcomes, head posture or the cranio-cervical inclination should be in a standardized posture during image acquisition, which has been highlighted as a confounding factor in the literature 1,18,20,31,35 thus calling for this study.…”

“…All rights reserved A new objective CBCT UA protocol was recently developed and validated with the purpose of measuring the UA volume, CSA and linear measurements in patients following orthognathic surgery. 31 The method was accordingly applied to a retrospective sample to evaluate the effect of bimaxillary surgery on the UA volumes, CSA and positional changes of epiglottis and hyoid bone. 32 In order to obtain reliable and comparable MRI and CBCT images with valid outcomes, the association between altered head or tongue posture and UA volumes, ought to be clarified based on an objective and verified UA analysis.…”

“…The aim of this pilot study was therefore to determine the impact of altered head or tongue posture on the UA volumes obtained from MRI scans based on a standardized and validated UA analysis. 31 The authors hypothesized that altered head or tongue posture has an impact on the UA volumes.…”