Effects of nickel-titanium file systems on relationship between cleanliness and fracture resistance of long-oval root canals
Zhang Zhuoyang, Wang Yiwei, Chen Xiyao, Wang Ying, Sun Shuntao, Tang Zisheng
Journal of Shanghai Jiao Tong University (Medical Science) . 2026, (4): 434 -441 .  DOI: 10.3969/j.issn.1674-8115.2026.04.003