1. Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil
2. Professor, Department of Periodontology, School of Dentistry, Universidad Cientifica del Sur, Lima, Peru
3. Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil