Changes in t
Raafat El Ghetany1 Hussein Al-Khaliph1 and Atef Hasanine 2
1Orthodontics Department, Faculty of Faculty of Dental MedicineAl-Azhar University Cairo, (boys) Egypt
2 Oral and maxillofacial surgery Department, Faculty of Faculty of Dental Medicine, Al-Azhar University Cairo,(boys) Egypt
Abstract: The aim of this study was to assess changes in pharyngeal airway, hyoid bone position in patients who had surgically assisted rapid maxillary expansion (RME) in cases of skeletal maxillary constriction. Fifteen patients with skeletal maxillary constriction with age ranged from 20 to 22.4 years. All patients had presurgical orthodontic treatment for six months. Lateral cephalograms were taken before and after surgery. Parameters indicating the upper and lower pharyngeal airway and the hyoid bone were evaluated. The results of the present study showed that; significant increased of the SPAS (superioposterior airway) by 5mm and significant increase of the vertical airway length (VAL) by 3.8 mm. The hyoid bone position was changed as indicated by significant increased of (H-C3) and (H- VRP) distances by 2.8mm and 4.5mm respectively, and significant decreased of (H-RGn) distance by 1.3 mm. While the movement of the hyoid bone in superior position indicated by significant decreased of (MPH) and (H-C3Me). Conclusion: From the results of the present study the following could be concluded; 1) the surgically assisted rapid maxillary expansion RME significantly improve the upper pharyngeal airway. 2) No significant changes were observed in the lower pharyngeal airway spaces. 3) The hyoid bone moved anteriorly and superiorly after treatment. 4) Surgically assisted RME treatment tends to normalize hyoid bone position.
[Raafat El Ghetany, Hussein Al-Khaliph and Atef Hasanine. Changes in the Pharyngeal Airway Spaces and Hyoid Bone Position Associated with Surgically Assisted Rapid Maxillary Expansion. J Am Sci 2013;9(6):561-565]. (ISSN: 1545-1003). http://www.jofamericanscience.org. 70
Keywords: Pharyngeal Airway Spaces; Hyoid Bone; Surgically Assisted Rapid Maxillary Expansion Full Text 70