Vibulcharoenkitja, P. ., D. Banomyong, B. . Sirisinsuk, P. . Angnanon, P. . Jiarratanasawat, K. . Lertsodsai, and T. . Wongkanchana. “Effect of Adding Zinc Oxide and Zirconium Oxide on Decreasing Tooth Discoloration from Mineral Trioxide Aggregate in a Regenerative Endodontic Model”. Mahidol Dental Journal, vol. 41, no. 1, Apr. 2021, pp. 91-96, https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/248080.