1. Department of Prosthodontics, Faculty of Dentistry, Dicle University, Diyarbakır, Turkey
2. Department of Restorative Dentistry, Faculty of Denstistry, Bingol University, Bingol, Turkey
3. Department of Prosthodontics, Faculty of Dentistry, Inonu University, Malatya, Turkey
4. Department of Periodontology, Diyarbakır Oral and Dental Hospital, Diyarbakır, Turkey