Khdeir, Rana M, and Adel F Ibraheem. “The Marginal Fitness of CAD CAM All Ceramic Crowns Constructed by Two Typesof Direct Digitization Techniques (An In Vitro Study)”. Journal of Baghdad College of Dentistry, vol. 28, no. 2, June 2016, pp. 30-33, https://doi.org/10.12816/0028210.