Thongpun, Noparat, Nathamon Thongbai-on, Phira Sithiamnuai, and Kallaya Suputtamongkol. 2016. “Evaluation of marginal and internal gaps of all-ceramic crowns using X-ray micro-computed tomography”. Mahidol Dental Journal 37 (1). Bangkok, Thailand:55-61. https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/180032.