Correlation analysis of the position of permanent incisor germs after the modified block appliance correcting the deciduous anterior crossbite
于静, 刘亚非, 左艳萍, 刘昕, 赵利霞, 尉静
Journal of Hebei Medical University . 2021, (1): 60 -65 .  DOI: 10.3969/j.issn.1007-3205.2021.01.013