1. Carlos José Soares, DDS, MS, PhD, professor at Operative Dentistry Department, Dental School, Federal University of Uberlândia, MG, Brazil
2. Natércia Rezende da Silva, DDS, graduate student, Dental School, Federal University of Uberlândia, MG, Brazil
3. Rodrigo Borges Fonseca, DDS, MS, PhD student, Piracicaba Dental School, State University of Campinas, São Paulo, Brazil