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Clinical Trial
. 2022 Nov-Dec;88 Suppl 5(Suppl 5):S162-S170.
doi: 10.1016/j.bjorl.2022.04.004. Epub 2022 May 20.

A clinical trial on 3D CT scan and polysomnographyc changes after rapid maxillary expansion in children with snoring

Rita Catia Brás Bariani  1 , Renato Bigliazzi  2 , Fauze Ramez Badreddine  3 , Lucia Hatsue Yamamoto  3 , Sergio Tufik  4 , Gustavo Moreira  4 , Reginaldo Raimundo Fujita  3
Affiliations
Clinical Trial

A clinical trial on 3D CT scan and polysomnographyc changes after rapid maxillary expansion in children with snoring

Rita Catia Brás Bariani et al. Braz J Otorhinolaryngol. 2022 Nov-Dec.

Abstract

Objective: The present prospective clinical study aimed to investigate the effects of rapid maxillary expansion on the airway, correlating airway volumes obtained on multi-slice computed tomography and polysomnography assessment of oxygen saturation and apnea/hypopnea index.

Methods: Twenty-four patients (11 with obstructive sleep apnea and 13 with residual snoring, mean age 10.0 (1.8), were enrolled in the study. Each patient underwent multislice computed tomography and nocturnal polysomnography before rapid maxillary expansion and after removal of maxillary expansion after six months. Airway regions were segmented, and volumes were computed.

Results: The increase in oropharyngeal volume was significant in both groups. Oxygen saturation and apnea/hypopnea index were not statistically significant. No correlation was found between total airway volume, oxygen saturation, and apnea/hypopnea index changes between the time points examined.

Conclusions: This study showed that when rapid maxillary expansion is performed in individuals with sleep-disordered breathing, there were statistically significant differences in oropharyngeal volume between pre- and post-rapid maxillary expansion, but there was no correlation between oxygen saturation values and oropharyngeal volume increase.

Level of evidence: The article is classified as Evidence Level 3 (Three).

Keywords: Craniofacial abnormalities; Imaging, three-dimensional; Palatal expansion technique; Sleep apnea syndromes; Sleep apnea, obstructive.

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Figures

Figure 1
Figure 1
Anatomical points. Basion (Ba): Point located in the lower portion on the anterior margin of the foramen magnum; C2 (Second cervical vertebra): Lower anterior point of the C2 vertebra; Posterior Nasal Spine (PNS): Tip of the posterior nasal spine of the palatine bone at the junction of the soft and hard palate; Hyoid (H): Uppermost point of the Hyoid bone.
Figure 2
Figure 2
Measurement of the oropharynx airway volume pre-RME (A) and post-RME (B), using the Dolphin imaging software.
See this image and copyright information in PMC

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