Clinical one-visit root treatment with nickel-titanium rotary instrument and ultrasonic irrigation unit for chronic apical periodontitis
Tang Zhen-yu, Jiang Shi-yong, Wang Hui, Lan Bi-feng
Chinese Journal of Tissue Engineering Research . 2014, (43): 6973 -6978 .  DOI: 10.3969/j.issn.2095-4344.2014.43.014