1. Diagnostic Center of Oral Diseases, Dental School Federal University of Pelotas – UFPel Pelotas Rio Grande do Sul Brazil
2. Department of Oral Diagnosis, Piracicaba School of Dentistry Campinas State University‐ UNICAMP Piracicaba São Paulo Brazil
3. Department of Restorative Dentistry, Graduation Program in Dentistry Federal University of Pelotas – UFPel Pelotas Rio Grande do Sul Brazil