The effects of alternate rapid maxillary expansion and constriction with maxillary protraction on upper air-way evaluated by CBCT
10.3969/j.issn.1001-3733.2024.06.006
- VernacularTitle:上颌反复扩缩合并前方牵引对上气道影响的CBCT研究
- Author:
Siying ZHOU
1
;
Zaoxia PENG
;
Chunxia LI
;
Jingyao YU
;
Congbo MI
Author Information
1. 830054 乌鲁木齐,新疆医科大学第一附属医院(附属口腔医院)口腔正畸科,新疆维吾尔自治区口腔医学研究所
- Keywords:
Upper Airway;
The alternate rapid maxillary expansion and constriction;
Maxillary protraction;
An-gle Class Ⅲ;
CBCT
- From:
Journal of Practical Stomatology
2024;40(6):770-774
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the effects of the alternate rapid maxillary expansion and constriction(Alt-RAMEC)with maxillary protraction on different parts of upper airway by CBCT.Methods:20 Angle Class Ⅲ patients aged 9-12 years were included,and CBCT images were taken before treatment and after Alt-RAMEC with maxillary protraction,the total volume of the upper airway,the volume of each part of the nasopharynx,palatopharynx,linguopharynx and laryngopharynx,the cross-sectional area of the division in-terface,and the minimum cross-sectional area were measured after 3D reconstruction using Dolphin software,the data were analyzed using SPSS 26.0 software.Results:The total upper airway volume,nasopharyngeal volume,and palatopharyngeal volume were in-creased by the average of 1 385.39 mm3(P=0.013),546.74 mm3(P=0.011)and 768.03 mm3(P=0.035)respectively after Alt-RAMEC with maxillary protraction treatment;the area of the nasopharyngeal and palatopharyngeal division interface increased by 73.79 mm2(P=0.002),the cross-sectional diameter by 1.41 mm(P=0.037),and sagittal diameter by 1.52 mm(P=0.022)respectively;however,there was no statistically significant change in the volume,minimum cross-sectional area,partition area,and partition transverse and sagittal diameters of the linguopharynx and laryngopharynx(P＞0.05).Conclusion:Alt-RAMEC with maxil-lary protraction can significantly increase nasopharyngeal and palatopharyngeal volumes,with no significant effect on the linguopharyn-geal and laryngopharyngeal segments of the airway.
