1. Postdoctoral researcher, Department of Periodontology; State University of Rio de Janeiro; RJ, Rio de Janeiro Brazil
2. Professor, Department of Implantology; Pontifical Catholic University of Rio de Janeiro; Rio de Janeiro RJ Brazil
3. Professor, Department of Stomatology, Estácio de Sá University; Rio de Janeiro RJ Brazil
4. Investigator, Geriatric Research, Education and Clinical Center - Bruce W. Carter Veterans Affairs Medical Center; Miami FL USA
5. Professor, Department of Endodontics, Estácio de Sá University; Rio de Janeiro RJ Brazil
6. Professor, Department of Statistics, Federal University of Rio Grande do Norte; Natal RN Brazil
7. Professor, Department of Periodontology, State University of Rio de Janeiro; RJ Rio de Janeiro Brazil