Vibulcharoenkitja, P. , Banomyong, D., Sirisinsuk, B. , Angnanon, P. , Jiarratanasawat, P. , Lertsodsai, K. and Wongkanchana, T. 2021. Effect of adding zinc oxide and zirconium oxide on decreasing tooth discoloration from mineral trioxide aggregate in a regenerative endodontic model. Mahidol Dental Journal. 41, 1 (Apr. 2021), 91–96.