1. University of São Paulo; Department of Periodontology; Av. Prof. Lineu Prestes, 2227 Cidade Universitária São Paulo SP Brazil 05508-000
2. State University of Maringá; Department of Periodontology; Av Mandacaru 1550 Maringá Brazil 87080-000
3. Methodist University of São Paulo; Department of Periodontology; Rua Cristianópolis, 220 São Paulo SP Brazil 03128-030