Merçon, I. R., C. E. da S. Bueno, D. G. P. Rocha, C. E. Fontana, A. S. G. Pais, and A. S. De Martin. “Root Fracture Resistance of Maxillary Premolars Obturated With Three Root Canal Sealers After Passive Ultrasonic Irrigation: An in Vitro Study”. Iranian Endodontic Journal, vol. 15, no. 3, July 2020, pp. 166-72, doi:10.22037/iej.v15i3.26426.