Relationships between Airway Morphology and Sleep Breathing Indices in Jaw Deformity Patients
|Hiroyuki Nakano1, Katsuaki Mishima2*, Asuka Nakano2, Hokuto Suga3, Yuichiro Miyawaki4, Takamitsu Mano2, Shintaro Nakagawa2, Mayumi Matsumura2, Yoshihide Mori1 and Yoshiya Ueyama2,5|
|1Section of Oral and Maxillofacial Surgery, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Japan|
|2Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yamaguchi University, Japan|
|3Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Japan|
|4Miyawaki Orthodontic Clinic, Japan|
|5Division of Oral and Maxillofacial Surgery, Graduate School of Dental Science, Kyushu University, Japan|
|Corresponding Author :||Katsuaki Mishima
Department of Oral and Maxillofacial Surgery
Graduate School of Medicine
Yamaguchi University, Minami-kogushi 1-1-1
Ube City, Yamaguchi-755-8505, Japan
E-mail: [email protected]
|Received December 04, 2014; Accepted January 19, 2015; Published January 28, 2015|
|Citation: Nakano H, Mishima K, Nakano A, Suga H, Miyawaki Y et al. (2015) Relationships between Airway Morphology and Sleep Breathing Indices in Jaw Deformity Patients. J Sleep Disord Ther 4:187. doi:10.4172/2167-0277.1000187|
|Copyright: © 2015 Nakano H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.|
Purpose: The purpose of this study was to clarify how sleep breathing indices and airway morphology vary according to skeletal classification and the relationships between airway morphology and sleep breathing indices.
Method: Forty-four non-syndromic female Japanese patients, who were diagnosed with jaw deformities and underwent surgical orthodontic treatment were enrolled in this study. Using the Alice 5 diagnostic sleep system (Philips Respironics; Murrysville, PA), the apnea hypopnea index (AHI), apnea index (AI), and 4% oxygen desaturation index (4%ODI) were evaluated in each patient before they underwent orthognathic surgery. The following dimensions were measured on 2D CT images: the cross-sectional area at the level of the hard palate (HP), the cross-sectional area at the top of the uvula (TU), the cross-sectional area at the base of the tongue (BE). The following volumes were measured on 3D CT images: the volume of the upper airway (total volume), the volume of the region between the level of the hard palate and the top of the uvula (HP- TU volume), the volume of the region between the top of the uvula and the base of the epiglottis (TP-BE volume).
Result: There were no significant differences in airway morphology or sleep breathing indices among the three groups. Negative correlations were detected between HP-TU volume and 4%ODI, and between the HP area and AHI (p<0.05).
Conclusion: Our results establish that upper airway morphology also has important effects on the nocturnal breathing of jaw deformity patients.