1. Graduate student Advanced Specialty Education Program in Prosthodontics; School of Dentistry, Loma Linda University; Loma Linda CA
2. Department of Prosthetic Dental Sciences; College of Dentistry, King Saud University; Riyadh Saudi Arabia
3. Hugh Love Center for Research and Education in Technology; Loma Linda University; Loma Linda CA
4. College of Dentistry; University of Dammam; Dammam Saudi Arabia