Randomized controlled clinical trial of digital and conventional workflows for the fabrication of zirconia-ceramic posterior fixed partial dentures. Part II: Time efficiency of CAD-CAM versus conventional laboratory procedures - Sven Mühlemann; Goran I. Benic; Vincent Fehmer; Christoph H.F. Hämmerle; Irena Sailer; University of Zurich; Mühlemann, Sven (The Journal of Prosthetic Dentistry, 2019)