1. Post-Graduate Program in Dental Clinics; Division of Pediatric Dentistry; Federal University of Rio Grande do Sul - UFRGS; Porto Alegre Brazil
2. Division of Cariology; Department of Preventive and Social Dentistry; Federal University of Rio Grande do Sul - UFRGS; Porto Alegre Brazil
3. Department of Farmacology; Institute of Basic Health Sciences; Federal University of Rio Grande do Sul - UFRGS; Porto Alegre Brazil
4. Post-Graduate Program in Dental Clinics; Division of Endodontics; Federal University of Rio Grande do Sul - UFRGS; Porto Alegre Brazil