Rapid Maxillary Expansion and Naso-PharyngealAirway A Three Dimensional Assessment | ||||
| Egyptian Dental Journal | ||||
| Article 5, Volume 64, Issue 4 - October (Orthodontics, Pediatric & Preventive Dentistry), October 2018, Page 2963-2968 PDF (644.42 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/edj.2018.78108 | ||||
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| Authors | ||||
| Noha Hussein Abbas1; Walaa Mohamed Hamed2; Shaimaa Mohamed Abu el Sadat3 | ||||
| 1Lecturer of Orthodontics, Faculty of Dentistry, Ain Shams University. | ||||
| 2Associate Professor of Oral and maxillo-facial Radiology, Faculty of Dentistry, Ain Shams University. | ||||
| 3Lecturer of Oral and maxillo-facial Radiology, Faculty of Dentistry, Ain Shams University. | ||||
| Abstract | ||||
| The two dimensional plain cephalometric radiographs were widely used to assess the post-rapid maxillary expansion (RME) effect on the naso-pharyngeal airway. However,volumetric changes in the airway need proper assessment. The aim of this study was to assess the linear and volumetric changes in the airway pre and post orthodontic RME using cone beam computed tomography (CBCT). A sample of 12 participants (8 males, 4 females with mean age 14+1.3) who needed RME for the management of posterior crossbite due to transverse maxillary deficiency was used in this study. CBCT scans were acquired pre and post maxillary expansion. Linear and angular measurements were calculated in addition to the volumetric measurements were obtained. There was a statistically significant increase in inter-molar width and molar tipping. The nasal cavity showed statistically significant increase in the width of the nasal floor and the lateral nasal width. There was also statistical significant increase in naso and oropharygeal airway measurements post-expansion. RME using hyrax appliance increased the nasal floor width, nasal lateral width and the airway volume at the naso and oropharyngeal level | ||||
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