1. Faculty of Dentistry, Department of Pediatric Dentistry, Necmettin Erbakan University, Konya, Turkey
2. Faculty of Dentistry, Department of Pediatric Dentistry, Ankara Yıldırım Beyazıt University, Ankara, Turkey
3. Clinic for Fixed and Removable Prosthodontics and Dental Materials Science, Center for Dental and Oral Medicine, Dental Materials Unit, University of ZurichUniversity of Zurich, Zurich, Switzerland