Thaworanunta, Sita, Naluemol Sriprasert, Poonyaporn Tarawatcharasart, Athithan Subtanarat, Chanchaokha Cholsiri, Kotchakorn Ratanasaovaphak, Nitiwat Thanatawinwongsa, and Panpailin Phrajunpanich. “Exposure to coffee and bleaching altered surface treated lithium disilicate porcelain color and surface roughness”. Mahidol Dental Journal 39, no. 3 (December 26, 2019): 267–276. accessed September 27, 2026. https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/224969.