Cephalometric analysis of the pharyngeal airway space after maxillary advancement surgery

Junya Aoki, Keiji Shinozuka, Kanako Yamagata, Ryota Nakamura, Takako Sato, Saori Ohtani, Shouhei Ogisawa, Keiichi Yanagawa, Morio Tonogi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)529-533
Number of pages5
JournalJournal of Oral Science
Volume61
Issue number4
DOIs
Publication statusPublished - 2019

Keywords

  • Cephalometric analysis
  • Dentofacial deformity
  • Maxillomandibular advancement
  • Obstructive sleep apnea
  • Pharyngeal airway space

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