1. Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
2. Indiana University School of Dentistry, Indianapolis, IN, USA.
3. College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
4. Private Practice at Radiance Dentistry, Irving, TX, USA.
5. Department of Biomedical Sciences and Comprehensive care, Division of Biomedical and Applied Sciences, Indiana University School of Dentistry, Indianapolis, IN, USA.