AKHTAR, M. S.; AGARWAL , A.; MALICK, M. A.; KHAN, S.; YADAV, S.; AGARWAL, S. Evaluation of apical debris extrusion during root canal preparation using Hand K file, Revo S, Protaper Next and Wave One file system: An in vitro study. UNIVERSITY JOURNAL OF DENTAL SCIENCES, v. 6, n. 2, p. 16-21, 26 Sep. 2020.