1. Faculty of Dentistry, Department of Endodontics Zonguldak Bülent Ecevit University Zonguldak Turkey
2. Faculty of Dentistry, Department of Endodontics Hacettepe University Ankara Turkey
3. Faculty of Dentistry Ankara Yıldırım Beyazıt University Ankara Turkey
4. Faculty of Medicine,Department of Anatomy Ankara Yıldırım Beyazıt University Ankara Turkey
5. Faculty of Medicine, Department of Anatomy Hacettepe University Ankara Turkey