Dr. Sofien Riahi is a graduate of the Medical University of Sofia, Faculty of Dentistry, and the founder of a private dental clinic in Sofia, Bulgaria. He specializes in restorative and prosthetic dentistry, with a strong focus on delivering high-quality, patient-centered care. He lectures on topics such as composite restorations of anterior teeth and complex interdisciplinary rehabilitations. Dr. Riahi has received eleven international Smile of the Year awards. Since 2025, he has been a Key Opinion Leader for Kuraray Noritake Dental Inc.