Clinical study of maxillary protraction appliance combined with modified Nance arch and maxillary protraction and rapid palatal expansion in skeletal class Ⅲ malocclusion
RAN Yidong, LIU Xuan
Medical Reserch and Education . 2015, (3): 26 -30 .  DOI: 10.3969/j.issn.1674-490X.2015.03.006