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4. Wide Effect of Maxillomandibular Advancement

Author

Hisagai, Sojiro, Li, Kasey K., Iwasaki, Tomonori, Tsujii, Toshiya, Sakoda-Iwata, Rina, Oku, Yoichiro, Ban, Yuusuke, Sato, Hideo, and Yamasaki, Youichi

Subjects
maxillomandibular advancement, pharyngeal airway, nasal obstruction, obstructive sleep apnea, computed fluid dynamics
Abstract

Objectives: Maxillomandibular advancement (MMA) for obstructive sleep apnea (OSA) is considered the useful treatment; however, its wide effectiveness is unclear. Thus, this study aimed to explore factors affecting the efficacy of MMA for OSA using a 3-D morphological and computed fluid dynamics (CFD) analysis of the upper airway (UA). Design: Retrospective study Settings and participants: Twenty consecutive patients (six women, mean age 34.2 ± 12.4 years) who underwent MMA because of persistent OSA at our center. Main outcome measures: Cone-beam computed tomography images were captured before and after MMA. We assessed the maxilla and mandibular positions, cross-sectional areas of the nasal airway (NA) and pharyngeal airway (PA), and PA space (PAS). The negative pressure of the PA, NA, and UA were measured at inspiration using CFD. We performed paired t-tests and Wilcoxon signed-rank test to compare values before and after MMA. The relationship between the airway size and pressure was evaluated using Spearman correlation coefficients and a non-linear regression analysis. Results: PAS significantly expanded from 6.5 ± 3.4 mm to 12.2 ± 3.8 mm. NA obstruction significantly improved from -312.6 ± 265.0 Pa to -76.2 ± 129.0 Pa. Moreover, the patients were divided into four types according to the PAS size and presence of NA obstruction, namely narrow PAS with NA obstruction, narrow PAS, NA obstruction, and wide PAS and without NA obstruction. Conclusions: We identified variations in the OSA types. However, MMA substantially improved NA obstruction and PA expansion. Thus, we considered that MMA for OSA was effective for various types.

Published
2023

20. Avancement maxillo-mandibulaire pour le traitement du SAOS : une perspective sur 25 ans.

Author

LI, Kasey, HOLEY, Jon-Erik, and GUILLEMINAULT, Christian

Abstract

Copyright of Orthodontie Française is the property of John Libbey Eurotext Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2023
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24. Expansion nasomaxillaire chirurgicale assistée par endoscopie (EASE) : une approche centrée surles voies respiratoires.

Author

LI, Kasey, Tomonori IWASAKI, QUO, Stacey, LEARY, Eileen B., LI, Connor, and GUILLEMINAULT, Christian

Abstract

Copyright of Orthodontie Française is the property of John Libbey Eurotext Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2022
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27. Traitement du SAOS par avancement maxillomandibulaire: complications graves et échecs.

Author

LI, Kasey and GUILLEMINAULT, Christian

Abstract

Copyright of Orthodontie Française is the property of John Libbey Eurotext Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2022
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28. SAOS pédiatrique persistant traité par distraction transpalatine à ancrage squelettique.

Author

LI, Kasey, IWASAKI, Tomonori, QUO, Stacey, LI, Connor, YOUNG, Kara, LEARY, Eileen, and GUILLEMINAULT, Christian

Abstract

Copyright of Orthodontie Française is the property of John Libbey Eurotext Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2022
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