Castagnola, Raffaella, Irene Minciacchi, Luca Marigo, Massimo Cordaro, and Nicola Maria Grande. “Treatment of a Root Canal Perforation Using a Calcium-Silicate Based Sealer: A Case Report With a 4 Year Follow-up”. Giornale Italiano di Endodonzia 33, no. 1 (June 11, 2019). Accessed August 5, 2021. https://giornaleitalianoendodonzia.it/index.php/gie/article/view/67.