Phakthawat, S., P. Phajongviriyatorn, K. Kitsahawong, and A. Rattanacharoenthum. “Effect of Saliva Contaminated and Re-Etching Time to Shear Bond Strength of Hydrophilic Sealant: An In Vitro Study”. Khon Kaen University Dental Journal, vol. 24, no. 1, Mar. 2021, pp. 15-27, https://he01.tci-thaijo.org/index.php/KDJ/article/view/244097.