1. Pontifical Catholic University of Rio Grande do Sul—PUCRS, Oral Medicine Division, São Lucas Hospital, Avenue Ipiranga, 6690, Room 231, CEP: 90610-000, Porto Alegre, RS, Brazil
2. Federal University of Pelotas—UFPEL, Oral Pathology Division, Rua Gonçalves Chaves 457, CEP: 96015-560, Pelotas, RS, Brazil
3. Pontifical Catholic University of Rio Grande do Sul-PUCRS, Radiotherapy Division, São Lucas Hospital, Brazil