1. UNESP – São Paulo State UniversityDivision of PeriodontologyCollege of Dentistry São José dos Campos Brazil
2. Department of Prosthodontics and PeriodonticsPeriodontics DivisionPiracicaba Dental SchoolUniversity of Campinas – UNICAMP Piracicaba SP Brazil
3. Division of PeriodontologyCollege of DentistryThe Ohio State University Columbus OH