1. Department of Oral Pathology, School of DentistryFederal University of Rio Grande do Sul Porto Alegre Brazil
2. Department of Oral Medicine, Porto Alegre Clinics Hospital (HCPA/UFRGS)Federal University of Rio Grande do Sul Porto Alegre Brazil
3. Laboratory of Nanosystems and Drug Delivery Devices (NanoSYS), School of PharmacyFederal University of Goiás Goiânia Brazil
4. Laboratory of Oral Pathology, School of DentistryFederal University of Goiás Goiânia Brazil
5. Laboratory of Pharmacology and Cellular Toxicology, Pharmacy FacultyFederal University of Goiás Goiânia Brazil
6. Experimental Pathology Unit, Clinics Hospital of Porto AlegreFederal University of Rio Grande do Sul Porto Alegre Brazil