CBCT Evaluation on Upper Airway Volume after Rapid Maxillary Expansion in Class Ⅱ Division 1 Adolescents

doi:10.13701/j.cnki.kqyxyj.2019.08.015

Abstract

Abstract: Objective: To assess upper airway changes immediately after rapid maxillary expansion (RME) in Class Ⅱ Division 1 malocclusion adolescent. Methods: Sixteen subjects with Class Ⅱ, Division 1 malocclusion and maxillary transverse deficiency underwent RME. CBCT images were collected pre-RME (T1) and post-RME (T2). Measurements were taken with Dolphin Imaging Software^® 11.8. Paried t test (P＜0.05) was used to compare differences between T1 and T2. Results: The upper airway volume and nasopharynx volume increased significantly (P<0.05) but there was no significant difference in retropalatal airway volume, retroglossal airway volume, and minimal cross-sectional area. Conclusion: There was significant increase in upper airway volume and nasopharynx volume after RME in Class Ⅱ Division 1 malocclusion adolescent.

Key words: rapid maxillary expansion, upper airway, CBCT

REN Liuyang, XIONG Hui. CBCT Evaluation on Upper Airway Volume after Rapid Maxillary Expansion in Class Ⅱ Division 1 Adolescents[J]. Journal of Oral Science Research, 2019, 35(8): 786-789.

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