1 Department of Pathology and Oral Diagnosis, School of Dentistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
2 Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas (FOP-UNICAMP), Avenida Limeira, 901, Areião, Piracicaba, São Paulo, 13414-903, Brazil. mdiniz332@hotmail.com.
3 Department of Dentistry, Federal University of Juiz de Fora, Campus GV (UFJF-GV), Governador Valadares, Brazil.