Effect of collagen sponge after extraction of impacted mandibular teeth
BAI Xi-jing, LV Dong-sheng, ZHOU Xian, WANG Ya-nan, YANG Xue-wen
China Journal of Oral and Maxillofacial Surgery . 2019, (2): 155 -158 .  DOI: 10.19438/j.cjoms.2019.02.011