Objective To compare the different effects between micro-implant and MEAW technique on the upper airway dimensions in patients with Class Ⅲ malocclusion. Methods 12 patients were selected to distalize the lower dentition with the micro-implant,while 13 patients were treated with MEAW technique. The cephalometric radiographs of the pre-and post-treatment upper airway in two groups were measured,then the comparison of those changes was statistically analyzed. Results There were statistically significant diffe...