Seesuan, Sumaitree, Kornchanok Wayakanon, and Sumana Posritong. 2022. “Effect of Bleaching and Re-Polishing Procedures on Stain Removal from Nanofilled Resin Composite”. Journal of The Department of Medical Services 47 (2):31-38. https://he02.tci-thaijo.org/index.php/JDMS/article/view/253716.