1. Department of Surgery and Integrated Clinic, Division of Periodontology, School of DentistrySão Paulo State University (UNESP) Araçatuba Brazil
2. Department of Periodontology, Faculty of DentistryFederal University of Rio Grande do Sul (UFRGS) Porto Alegre Brazil
3. Department of Prosthodontics and Periodontics, Piracicaba Dental SchoolState University of Campinas (UNICAMP) Piracicaba Brazil
4. Department of Morphology, Araraquara Dental SchoolSão Paulo State University (UNESP) Araraquara Brazil
5. Post Graduate ProgramLatin American Institute of Dental Research and Education (ILAPEO) Curitiba Brazil