1. Section of Endodontology, Department of Oral Health Sciences Ghent University Ghent Belgium
2. Division of Endodontics, Department of Restorative Dentistry, Piracicaba Dental School State University of Campinas ‐ UNICAMP Piracicaba Brazil
3. Department of Community Health, School of Dentistry Federal University of Mato Grosso do Sul Campo Grande Brazil