Evaluation of craniofacial morphology in patients with obstructive sleep apnea using lateral cephalometry and dynamic MRI

Context: Obstructive sleep apnea (OSA) is a potentially life-threatening disorder, characterized by repeated collapse of the upper airway during sleep with cessation of breathing. The altered mouth breathing produces morphological changes in craniofacial region. Aim: This study was designed to compa...

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Bibliographic Details
Published in:Indian journal of dental research 2011-11, Vol.22 (6), p.739-748
Main Authors: Bharadwaj, Rekha, Ravikumar, A, Krishnaswamy, N
Format: Article
Language:English
Subjects:
Apnea
Care and treatment
Dynamic magnetic resonance imaging
lateral cephalometry
Magnetic resonance imaging
Medical research
Medicine, Experimental
obstructive sleep apnea
Pathology
Physiology
polysomnography
retopalatal obstruction
retroglossal obstruction
Sleep apnea
Sleep apnea syndromes
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Summary:Context: Obstructive sleep apnea (OSA) is a potentially life-threatening disorder, characterized by repeated collapse of the upper airway during sleep with cessation of breathing. The altered mouth breathing produces morphological changes in craniofacial region. Aim: This study was designed to compare and validate the craniofacial morphological characteristics in patients with OSA using lateral cephalometry and to investigate the dentofacial characteristics of patients with OSA with respect to the obstructive sites determined by dynamic magnetic resonance imaging (MRI) to more accurately clarify the pathophysiological features. Materials and Methods: 10 patients with OSA were divided into two groups of five each according to their obstructive site determined by dynamic MRI. (1) Obstruction at the retropalatal and retroglossal region (Rp + Rg group) and (2) obstruction at the retropalatal region (Rp group). Lateral cephalogram both in upright and supine position was taken for all the subjects. In addition, dynamic MRI was performed to identify the sites of obstruction of the upper airway. Statistical analysis used: Independent t-test was performed to evaluate the significant difference in the upright cephalometric variables between the study and control group and between the two groups. The changes in skeletal and soft tissue parameters with change in posture was assessed within the study and control group by paired t test. P value of
ISSN:0970-9290
1998-3603
DOI:10.4103/0970-9290.94566