The effect of variations in translucency and background on color differences in CAD/CAM lithium disilicate glass ceramics
Journal of Prosthodontics (2014) - Comments
pubmed: 23889762  doi: 10.1111/jopr.12080  issn: 1532-849x  issn: 1059-941x 

Abdulaziz Al Ben Ali, Kiho Kang, Matthew D. Finkelman, Roya Zandparsa, Hiroshi Hirayama