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Chinese Journal of Stomatology ; (12): 403-407, 2015.
Article in Chinese | WPRIM | ID: wpr-294694

ABSTRACT

<p><b>OBJECTIVES</b>To evaluate the naso-maxillary complex width and pharyngeal airway volume changes after rapid maxillary expansion (RME).</p><p><b>METHODS</b>Thirty-five patients were selected (18 males, 17 females, mean age, 12.1 ± 1.1 years). All patients underwent orthodontic treatment with Hyrax palatal expanders. Cone-beam CT (CBCT) scan was taken before treatment (T0), 16 days (T1) and three months (T3) after RME. Naso-maxillary complex width and pharyngeal airway volume were measured.</p><p><b>RESULTS</b>After treatment the width of piriform aperture and maxillary width were significantly increased compared with that before treatment (P < 0.05). Three months after RME, no statistical difference was found in maxillary width compared with that before treatment. The nasopharyngeal volume significantly increased by 29.9% compared with that before treatment (P < 0.05), and the volume remained relatively stable after three months.</p><p><b>CONCLUSIONS</b>RME resulted in a significant increase in the naso-maxillary complex width and nasopharyngeal volume.</p>


Subject(s)
Cone-Beam Computed Tomography , Female , Humans , Imaging, Three-Dimensional , Male , Maxilla , Diagnostic Imaging , Nose , Diagnostic Imaging , Palatal Expansion Technique , Palate , Diagnostic Imaging , Pharynx , Diagnostic Imaging
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