Three-dimensional pharyngeal airway changes in dento-skeletal class II patients after two-jaw orthognathic surgery with segmentation?–?a pilot study - 04/12/18
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Abstract |
Purpose |
To investigate short- and long-term post-surgical three-dimensional changes of pharyngeal airway morphology and hyoid bone position in dento-skeletal class II deformity patients after two-jaw surgery with segmentation.
Methods |
Relations between skeletal movement, hyoid bone position and three-dimensional pharyngeal airway changes were retrospectively analyzed on pre- and post-surgical CBCTs in dento-skeletal class II patients who underwent orthognathic two-jaw surgery with segmentation.
Results |
While long-term significant reductions in length (P = 0.003), surface area (P = 0.042) and volume (P = 0.004) were found in the nasopharynx, the highly significant increases in oropharyngeal airway length, surface area, volume and the minimal cross-sectional area (P < 0.05) prevailed only in the short-term. Although a significant antero-superior movement of the hyoid bone was detected both in short- and long-term follow-up CBCTs (P < 0.05), only its superior, but not the anterior movement was found to be associated with an increased lateral width of the oropharyngeal minimal cross-sectional area.
Conclusion |
Two-jaw orthognathic surgery with segmentations in dento-skeletal class II patients improved oropharyngeal airway parameters significantly in the short-, but not long-term.
Le texte complet de cet article est disponible en PDF.Keywords : Orthognathic surgery, Dento-skeletal class II, Pharyngeal airway, Hyoid bone
Plan
Vol 119 - N° 6
P. 461-468 - décembre 2018 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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