1. Department of Endodontics, Faculty of Dentistry, Ankara University
2. Ministry of Health, Ataturk Oral and Dental Health Care Hospital
3. Division of Pediatric Dentistry, Ministry of Health, 75th Year Ankara Oral and Dental Health Centre
4. Department of Endodontics, Faculty of Dentistry, Mustafa Kemal University
5. Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Near East University
6. Ministry of Health, Public Hospitals Agency of Turkey
7. Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University