1. Department of Diagnosis and Surgery, Division of Periodontology, College of Dentistry, São Paulo State University, São José dos Campos, Brazil.
2. Department of Prosthodontics and Periodontics, Division of Periodontics, Piracicaba Dental School, Campinas State University, Piracicaba, Brazil.
3. Department of Periodontology and Oral Biology, College of Dentistry, University of Florida, Gainesville, FL.