Z. . Ahangari, F. Mashhadiabbas, M. . Feli, Z. . Jafari, and S. . Zadsirjan, “Evaluation of Pulp Tissue Following Direct Pulp Capping with Propolis versus Calcium Hydroxide: A Clinical Trial ”, J Dent Sch, vol. 38, no. 4, pp. 134–138, Dec. 2021.