1. Department of Preventive and Community Dentistry, School of Dentistry Rio de Janeiro State University Rio de Janeiro RJ Brazil
2. School of Dentistry Salgado de Oliveira University Niterói RJ Brazil
3. Department of Pediatric Dentistry, School of Dentistry Goias Federal University Goiânia GO Brazil
4. Department of Pediatric Dentistry, School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte MG Brazil