1. Department of Pathological Sciences; State University of Londrina; Londrina Brazil
2. Department of Dentistry; State University of Maringá; Maringá Brazil
3. Department of Oral Pathology; Bauru School of Dentistry; University of São Paulo; Bauru Brazil
4. Department of Oral Medicine and Dentistry Children's; State University of Londrina; Londrina Brazil
5. Department of Biological Sciences; State University of Londrina; Londrina Brazil