Kelvin I. Afrashtehfar, D.D.S., M.D.S., M.Sc., Ph.D. (UAE-MoE), FDS RCS, FRCDC Evidence-Based Practice Unit (EBPU), Clinical Sciences Department, College ofDentistry, Ajman University (AU), Box 346, Ajman City, UAE.Department of Reconstructive Dentistry and Gerodontology (RekGero), School of DentalMedicine, Faculty of Dentistry, University of Bern (UniBE), 3010 Bern, Switzerland. [email protected].[Visiting] Department of Prosthodontics, Yonsei University College of Dentistry, Seoul