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Your search keyword '"upper airway space"' showing total 4 results
Start Over Descriptor "upper airway space" Topic cone beam computed tomography
4 results on '"upper airway space"'

1. Effect of Bimaxillary Orthognathic Surgery on Pharyngeal Airway Volume.

Author

Parra, Marcelo, Araneda, Luis, Torres, Héctor, and Olate, Sergio

Subjects
*ORTHOGNATHIC surgery, *PHARYNGEAL muscles, *SLEEP apnea syndromes, *VOLUMETRIC analysis, *CONE beam computed tomography, *HYPOPHARYNX
Abstract

Subjects with maxillary skeletal classes II and III not only express alterations in the hard and soft maxillofacial tissues, but also in the morphology and dimensions of the upper airway. A small space in the upper airway has been associated with sleep disorders, such as snoring and mainly obstructive sleep apnea/hypopnea syndrome (OSAHS). Consequently, interest has increased due to the influence of orthognathic surgery in the airway space. Although there are studies in the literature that have compared upper airway spaces, most have evaluated the changes using two-dimensional images, mainly lateral skull X-rays. The present study aimed to determine the airway volume in subjects with skeletal classes II and III who underwent bimaxillary orthognathic surgery. 80 CBCT exams from 40 subjects obtained before and 6 months after surgery were used. There were 20 class II and 20 class III subjects. For the volumetric analysis, a 3D rendering of the upper airway was made in previously established segments, and then the airway volume was calculated using the 3D Slicer® software version 4.11 (Slicer, USA). The statistical analysis by t-test of related samples revealed statistically significant volumetric increases in the nasopharynx, laryngopharynx, and total volume in class II patients. However, in class III patients, there were significant increases in the nasopharynx and total volume, while the volume was maintained in the oropharynx and laryngopharynx. [ABSTRACT FROM AUTHOR]

Published
2023
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2. Three-dimensional pharyngeal airway space changes after bimaxillary advancement

Author

Arnaldo Pinzan, Caroline Nemetz Bronfman, Thais Lima Rocha, Guilherme Janson, Renato Luiz Maia Nogueira, Eduardo Sant’Ana, and Ludmila Mangialardo Lima

Subjects
Avanço bimaxilar, Male, Cone beam computed tomography, Bimaxillary advancement, Cephalometry, medicine.medical_treatment, Orthognathic surgery, Orthodontics, Esthetics, Dental, Imaging, Three-Dimensional, Statistical significance, Tomografia computadorizada de feixe cônico, medicine, Vias aéreas superiores, Humans, Upper airway space, Retrospective Studies, business.industry, Orthognathic Surgical Procedures, Cone-beam computed tomography, Mean age, Maxillomandibular advancement, RK1-715, AVANÇO MANDIBULAR, Apneia obstrutiva do sono, medicine.disease, Obstructive sleep apnea, Dentistry, Pharynx, Female, Original Article, Oral Surgery, business, Airway, Cirurgia ortognática
Abstract

Introduction: The probability of improvement in the upper airway space (UAS) with orthognathic surgery should be considered during the surgical-orthodontic treatment decision, providing not only an esthetic, but also a functional benefit for the patient. Objective: The purpose of this study was to evaluate the 3D changes in the upper airway space after maxillomandibular advancement surgery (MMA). Methods: A retrospective analysis of 56 patients, 21 male and 35 female, with a mean age of 35.8 ± 10.7 years, who underwent MMA was performed. Pre- and postoperative cone-beam computed tomography scans (CBCT) were obtained for each patient, and the changes in the UAS were compared using Dolphin Imaging 11.7 software. Two parameters of the pharyngeal airway space (PAS) were measured: airway volume (AV) and minimum axial area (MAA). Paired t-test was used to compare the data between T0 and T1, at 5% significance level. Results: There was a statistically significant increase in the UAS. Bimaxillary advancement surgery increased the AV and the MAA, on average, by 73.6 ± 74.75% and 113.5 ± 123.87%, respectively. Conclusion: MMA surgery tends to cause significant increase in the UAS; however, this increase is largely variable. RESUMO Introdução: A probabilidade de melhoria do espaço aéreo superior (EAS) com cirurgia ortognática deve ser considerada durante a decisão do tratamento ortodôntico-cirúrgico, proporcionando não somente um benefício estético, mas também funcional, para o paciente. Objetivo: O objetivo do presente estudo foi avaliar as alterações 3D no espaço das vias aéreas superiores após a cirurgia de avanço maxilomandibular (AMM). Métodos: Foi realizada uma análise retrospectiva de 56 pacientes, 21 homens e 35 mulheres, com média de idade de 35,8 ± 10,7 anos, submetidos a AMM. Foram obtidas tomografias computadorizadas de feixe cônico (TCFC) pré- e pós-operatórias para cada paciente, e as alterações no EAS foram comparadas usando o software Dolphin Imaging v. 11.7. Foram medidos dois parâmetros do espaço aéreo faríngeo (EAF): volume das vias aéreas (VVA) e área axial mínima (AAM). Foi utilizado o teste t pareado para comparar os dados entre T0 e T1, com nível de significância de 5%. Resultados: Houve um aumento estatisticamente significativo no EAS. A cirurgia de avanço bimaxilar aumentou o volume das vias aéreas (VVA) e a área axial mínima (AAM) em média 73,6 ± 74,75% e 113,5 ± 123,87%, respectivamente. Conclusão: A cirurgia de AMM tende a causar o aumento significativo do EAS; no entanto, esse aumento é altamente variável.

Published
2021

3. Assessment of pharyngeal airway space using Cone-Beam Computed Tomography.

Author

dos Reis Zinsly, Sabrina, César de Moraes, Luiz, de Moura, Paula, and Ursi, Weber

Subjects
AIRWAY (Anatomy), THREE-dimensional imaging, CONE beam computed tomography, ORTHODONTICS, DENTISTRY
Abstract

Introduction: Evaluation of upper airway space is a routine procedure in orthodontic diagnosis and treatment planning. Although limited insofar as they provide two dimensional images of three-dimensional structures, lateral cephalometric radiographs have been used routinely to assess airway space permeability. Cone-Beam Computed Tomography (CBCT) has contributed to orthodontics with information concerning the upper airway space. By producing three-dimensional images CBCT allows professionals to accurately determine the most constricted area, where greater resistance to air passage occurs. Objectives: The purpose of this article is to enlighten orthodontists on the resources provided by CBCT in the diagnosis of possible physical barriers that can reduce upper airway permeability. [ABSTRACT FROM AUTHOR]

Published
2010

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