Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese journal of stomatology · 2015
[Cone-beam CT evaluation of nasomaxillary complex and upper airway following rapid maxillary expansion].
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Li Lei, Qi Suqing, Wang Hongwei, Ren Sufeng, Ban Jiandong
Аннотация
OBJECTIVES: To evaluate the naso-maxillary complex width and pharyngeal airway volume changes after rapid maxillary expansion (RME).
METHODS: 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.
RESULTS: 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.
CONCLUSIONS: RME resulted in a significant increase in the naso-maxillary complex width and nasopharyngeal volume.
METHODS: 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.
RESULTS: 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.
CONCLUSIONS: RME resulted in a significant increase in the naso-maxillary complex width and nasopharyngeal volume.