1. Postgraduate Program in Oral Pathology Dentistry Department Federal University of Rio Grande do Norte Natal RN Brazil
2. Oral and Maxillofacial Surgery Residence Dentistry Department Federal University of Rio Grande do Norte Natal RN Brazil
3. Department of Dental Clinic Discipline of Oral and Maxillofacial Surgery and Stomatology Federal University of Ceara School of Dentistry Fortaleza CE Brazil
4. Department of Oral Pathology School of Dentistry University of Fortaleza, UNIFOR Fortaleza CE Brazil