1 Department of Restorative Dentistry, Universiti Malaya, Faculty of Dentistry, Kuala Lumpur, Malaysia.
2 Department of Endodontics, Ondokuz Mayıs University, Faculty of Dentistry, Samsun, Türkiye; Department of Endodontics, Bolu Abant İzzet Baysal University, Faculty of Dentistry, Bolu, Türkiye.
3 Department of Restorative, Preventive and Pediatric Dentistry, University of Bern, School of Dental Medicine, Switzerland; Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University Mainz, Germany.