Changes of the upper airway in children with Class Ⅱ mandibular retrusion and snoring during night before and after functional treatment by sagittal-guidance Twin-block appliance

CHEN Nan, XIONG Bin, ZHANG Ting, XIA Wen-qian, LU Jian-feng, GAO Mei-qin

Shanghai Journal of Stomatology . 2021, (3): 273 -277 . DOI: 10.19439/j.sjos.2021.03.010