拔除上颌第二磨牙后推第一磨牙远移矫治上牙列中度拥挤的研究

陈莉莉;李俊梅;秦向阳;毕惠贤;段银钟

Clinical treament of moderately crowded upper dentition by distalization of first upper molars following extraction of second molars

. 2003, (10): 586 -589 .