Urapepon, Somchai, and Duangporn Wiriyapak. 2016. “Effect of Resin Infusion on Fracture Toughness of Dental Veneering Ceramic”. Mahidol Dental Journal 37 (1). Bangkok, Thailand:1-6. https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/179963.