Alberto Caprioglio1, Matteo Meneghel1, Rosamaria Fastuca2, Piero Antonio Zecca1, Riccardo Nucera3, Luana Nosetti4. 1. Department of Orthodontics, University of Insubria, Varese, Italy. 2. Department of Orthodontics, University of Insubria, Varese, Italy. Electronic address: rosamariaf@hotmail.it. 3. Department of Orthodontics, University of Messina, Messina, Italy. 4. Department of Pediatrics, University of Insubria, Varese, Italy.
Abstract
OBJECTIVES: The aim of the present prospective study was to investigate the effects of rapid maxillary expansion on the airway correlating airway volumes computed on cone beam computed tomography and polysomnography evaluation of oxygen saturation and apnea/hypopnea index. METHODS: The study group comprised 14 caucasian patients (mean age 7.1 ± 0.6 years) undergone to rapid maxillary expansion with Haas type expander banded on second deciduous upper molars. Cone beam computed tomography scans and polysomnography exams were collected before placing the appliance (T0) and after 12 months (T1). Landmarks localization and airway semiautomatic segmentation on cone beam computed tomography scans allowed airway volume computing and measurements. RESULTS: Increases of total airway volume, oxygen saturation and apnea/hypopnea index were statistically significant. No correlation was found among total airway volume, oxygen saturation and apnea/hypopnea index changes between the examined timepoints. CONCLUSIONS: Computing airway volume on cone beam computed tomography allow to measure the amount of air that flows through nasal cavity, nasopharynx and oropharynx while oxygen saturation and apnea/hypopnea index could give information about functional parameters. In the present study all three variables investigated showed statistically significant differences between T0 and T1 but no correlation was found between increases of the different variables tested.
OBJECTIVES: The aim of the present prospective study was to investigate the effects of rapid maxillary expansion on the airway correlating airway volumes computed on cone beam computed tomography and polysomnography evaluation of oxygen saturation and apnea/hypopnea index. METHODS: The study group comprised 14 caucasian patients (mean age 7.1 ± 0.6 years) undergone to rapid maxillary expansion with Haas type expander banded on second deciduous upper molars. Cone beam computed tomography scans and polysomnography exams were collected before placing the appliance (T0) and after 12 months (T1). Landmarks localization and airway semiautomatic segmentation on cone beam computed tomography scans allowed airway volume computing and measurements. RESULTS: Increases of total airway volume, oxygen saturation and apnea/hypopnea index were statistically significant. No correlation was found among total airway volume, oxygen saturation and apnea/hypopnea index changes between the examined timepoints. CONCLUSIONS: Computing airway volume on cone beam computed tomography allow to measure the amount of air that flows through nasal cavity, nasopharynx and oropharynx while oxygen saturation and apnea/hypopnea index could give information about functional parameters. In the present study all three variables investigated showed statistically significant differences between T0 and T1 but no correlation was found between increases of the different variables tested.
Authors: Matheus Melo Pithon; Nathalia de Lima Santos; Camila Rangel Barreto Dos Santos; Felipe Carvalho Souza Baião; Murilo Costa Rangel Pinheiro; Manoel Matos; Ianderlei Andrade Souza; Rafael Pereira de Paula Journal: Dental Press J Orthod Date: 2016 Nov-Dec