Journal of Oral Science Research
Clearup Effects of Nickel-titanium Rotary Instrument and Ultrasonic Irrigation on Endotoxin Level in Root Canals of Chronic Apical Periodontitis
HU Yong-qing, LI Ya, LI Shu-juan, LIANG Xiang-yang, YANG Dong-ru
Journal of Oral Science Research . 2018, (11): 1182 -1185 .  DOI: 10.13701/j.cnki.kqyxyj.2018.11.009