Comparison of the Treatment Effectiveness between Two Vanbeek Activators with Different Load-Points of Extraoral Force in the Treatment of Children’s Skeletal Class Ⅱ Malocclusion

KE Yun-yan, ZHANG Li-gang, YING Li-zhen, CHEN Xue-peng

ZHONGHUA YANGSHENG BAOJIAN . 2024, (13): 5 -8 .