TY - JOUR
T1 - Cephalometric analysis of the pharyngeal airway space after maxillary advancement surgery
AU - Aoki, Junya
AU - Shinozuka, Keiji
AU - Yamagata, Kanako
AU - Nakamura, Ryota
AU - Sato, Takako
AU - Ohtani, Saori
AU - Ogisawa, Shouhei
AU - Yanagawa, Keiichi
AU - Tonogi, Morio
N1 - Publisher Copyright:
© 2019, Nihon University, School of Dentistry. All rights reserved.
PY - 2019
Y1 - 2019
N2 - This study evaluated the effect of maxillary advancement surgery on the size of the pharyngeal airway space (PAS). Lateral cephalometric radiographs were collected for 90 patients (29 men and 61 women; average age, 27.2 ± 8.1 years) before (T1) and 1 year after (T2) maxillary advancement surgery. Horizontal and vertical changes in the maxilla and PAS were measured and classified by distance. The maxilla was advanced horizontally by 2.9 ± 1.7 mm and vertically by 2.7 ± 1.4 mm. Upward maxillary movement of ≥4 mm significantly increased PAS (mean change in PAS, 2.6 mm), and upward maxillary movement significantly decreased the posterior nasal spine to the P-point. Only patients with vertical advancement ≥4 mm and horizontal advancement of 3 mm had significant increases in all three PAS parameters. Although forward maxillary movement is believed to have a large effect on PAS, it is suggest that upward vertical movement is more effective for improving PAS. Both the extent and direction of maxillar movement should be considered. Future studies should use cone-beam computed tomography to evaluate the effect of axial direction and differences in PAS.
AB - This study evaluated the effect of maxillary advancement surgery on the size of the pharyngeal airway space (PAS). Lateral cephalometric radiographs were collected for 90 patients (29 men and 61 women; average age, 27.2 ± 8.1 years) before (T1) and 1 year after (T2) maxillary advancement surgery. Horizontal and vertical changes in the maxilla and PAS were measured and classified by distance. The maxilla was advanced horizontally by 2.9 ± 1.7 mm and vertically by 2.7 ± 1.4 mm. Upward maxillary movement of ≥4 mm significantly increased PAS (mean change in PAS, 2.6 mm), and upward maxillary movement significantly decreased the posterior nasal spine to the P-point. Only patients with vertical advancement ≥4 mm and horizontal advancement of 3 mm had significant increases in all three PAS parameters. Although forward maxillary movement is believed to have a large effect on PAS, it is suggest that upward vertical movement is more effective for improving PAS. Both the extent and direction of maxillar movement should be considered. Future studies should use cone-beam computed tomography to evaluate the effect of axial direction and differences in PAS.
KW - Cephalometric analysis
KW - Dentofacial deformity
KW - Maxillomandibular advancement
KW - Obstructive sleep apnea
KW - Pharyngeal airway space
UR - http://www.scopus.com/inward/record.url?scp=85075743986&partnerID=8YFLogxK
U2 - 10.2334/josnusd.18-0422
DO - 10.2334/josnusd.18-0422
M3 - Article
C2 - 31548456
AN - SCOPUS:85075743986
SN - 1343-4934
VL - 61
SP - 529
EP - 533
JO - Journal of Oral Science
JF - Journal of Oral Science
IS - 4
ER -