1. Oral Histopathology Laboratory, Health Sciences Faculty; University of Brasília; Brasília Brazil
2. School of Dentistry, Faculty of Medicine and Dentistry; University of Alberta; Edmonton Alberta, Canada
3. Department of Dentistry; Federal University of Santa Catarina; Florianopolis Brazil
4. Department of Prosthodontics, Section of Orofacial Pain, Bauru School of Dentistry; University of São Paulo; Bauru SP, Brazil