1. Specialist in Pediatric Dentistry; Federal University of Rio Grande do Sul - UFRGS; Porto Alegre RS Brazil
2. Department of Stomatology; Federal University of Santa Maria - UFSM; Santa Maria RS Brazil
3. Department of Conservative Dentistry; Federal University of Rio Grande do Sul - UFRGS; Porto Alegre RS Brazil
4. Department of Surgery and Orthopedics; Federal University of Rio Grande do Sul - UFRGS; Porto Alegre RS Brazil