1. São Paulo State University (UNESP) Division of Periodontics Institute of Science and Technology São José dos Campos Brazil
2. Division of Operative Dentistry Department of General Dentistry University of Maryland School of Dentistry Baltimore Maryland USA
3. Department of Prosthodontics and Periodontics Division of Periodontics Piracicaba Dental SchoolPiracicaba Brazil
4. College of Dentistry Division of Periodontology The Ohio State University (OSU) Columbus Ohio USA
5. College of Dentistry ‐ Lexington University of Kentucky Lexington Kentucky USA