1. Postgraduate Program in Dentistry Federal University of Juiz de Fora Juiz de Fora Brazil
2. Department of Restorative Dentistry School of Dentistry Federal University of Juiz de Fora Juiz de Fora Brazil
3. Department of Dentistry Health Science Institute Federal University of Juiz de Fora Governador Valadares Brazil
4. Department of Conservative Dentistry School of Dentistry Federal University of Rio Grande do Sul Porto Alegre Brazil
5. Postgraduate Program in Dentistry Federal University of Rio Grande do Sul Porto Alegre Brazil