上颌第一恒磨牙近中颊根根管宽度和锥度测量分析

勾静雪, 陈瑶, 刘桂红

Measurement of the mesiobuccal root canal width and taper of maxillary first molars

GOU Jing-xue, CHEN Yao, LIU Gui-hong

上海口腔医学 . 2018, (1): 34 -38 . DOI: 10.19439/j.sjos.2018.01.008