Effect of Selected Luting Agents on the Retention of CAD/CAM Zirconia Crowns under Cyclic Environmental Pressure - Sadighpour, Leyla; Geramipanah, Farideh; Fazel, Akbar; Allahdadi, Mahdi; KharaziFard, Mohamad Javad (Frontiers in Dentistry, 2018)