1. Department of Oral Surgery, School of Dentistry, Fluminense Federal University, Niterói 24020-140, Brazil
2. Department of Periodontology and Oral Implantology, Dental Research Division, University of Guarulhos, São Paulo 07023-070, Brazil
3. Department of Periodontology, Dental Research Division, School of Dentistry, Veiga de Almeida University, Rio de Janeiro 20271-020, Brazil
4. Division of Periodontology, School of Dentistry, Rio de Janeiro State University, Rio de Janeiro 20551-030, Brazil
5. Department of Periodontology, Division Dental Research Administration, Tufts University School of Dental Medicine, Boston, MA 02111, USA