Knorr, A. et al. 2021. Cytotoxicity and Bioactivity of Calcium Silicate-based Cements in a Culture of Stem Cells from the Apical Papilla. Iranian Endodontic Journal. 16, 4 (Oct. 2021), 225–231. DOI:https://doi.org/10.22037/iej.v16i4.30747.