1. Department of Community and Preventive Dentistry; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte MG Brazil
2. Department of Pediatric Dentistry and Orthodontics; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte MG Brazil
3. Department of Operative Dentistry; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte MG Brazil