alexa Three-dimensional analysis of pharyngeal airway volume in adults with anterior position of the mandible.
Neurology

Neurology

Journal of Sleep Disorders & Therapy

Author(s): Hong JS, Oh KM, Kim BR, Kim YJ, Park YH

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Abstract INTRODUCTION: The purpose of this study was to examine whether the pharyngeal airway volume in adults with skeletal Class III malocclusion is greater than in subjects with Class I occlusion and whether the pharyngeal airway volume correlated with facial morphology. METHODS: Cone-beam computed tomography scans were obtained from 60 subjects, who were assigned to 2 groups. The skeletal Class III malocclusion group consisted of 31 subjects (16 men, 15 women) who had planned on orthodontic treatment with orthognathic surgery. The Class I malocclusion group consisted of 29 subjects (14 men, 15 women). The pharyngeal airway volumes and areas were measured and compared with cephalometric variables. RESULTS: The cross-sectional areas of the lower part of the pharyngeal airway and the volume of the upper part of the pharyngeal airway were greater in skeletal Class III malocclusion patients than in Class I malocclusion patients. The volume of the upper part of the pharyngeal airway showed negative correlations with ANB angle and the Wits appraisal, and positive correlations with SNB, APDI, pogonion to N-perp, gonial angle, and FMA. CONCLUSIONS: The volume of the upper part of the pharyngeal space was greater in patients with skeletal Class III malocclusion, and the increased volume of the upper part of the pharyngeal airway showed significant correlations with measurements characterizing the anterior position of mandible. Copyright © 2011 American Association of Orthodontists. Published by Mosby, Inc. All rights reserved. This article was published in Am J Orthod Dentofacial Orthop and referenced in Journal of Sleep Disorders & Therapy

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