Maintenance: On Thursday, June 28 2018, 18:00-18:15, maintenance work on the ZORA servers is scheduled. ZORA will not be available during this period. Thank you for your patience.
Sailer, I; Gottner, J; Känel, S; Hämmerle, C H F (2009). Randomized controlled clinical trial of zirconia-ceramic and metal-ceramic posterior fixed dental prostheses: a 3-year follow-up. International Journal of Prosthodontics, 22(6):553-560.