1. Program of Master in Dental Science, Facultad de Odontología, Universidad de La Frontera, Temuco 4811230, Chile
2. Faculty of Dentistry, Universidad San Sebastián, Sede Patagonia, Puerto Montt 5480000, Chile
3. Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Temuco 4810101, Chile
4. Department of Integral Adultos, Facultad de Odontología, Universidad de La Frontera, Temuco 4780000, Chile
5. Private Practice, Radiologist, Temuco 4780000, Chile
6. Faculty of Medicine and Health Sciences, University of Barcelona, 08907 Barcelona, Spain
7. Idibell Institute, 08908 Barcelona, Spain
8. Endodontic Laboratory, Center for Research in Dental Sciences (CICO), Faculty of Dentistry, Universidad de La Frontera, Temuco 4780000, Chile