Nabil F. Bissada, DDS, MSD, is a professor, chair of the Department of Periodontics, and director of the post-doctoral graduate program in periodontics at the School of Dental Medicine, Case Western Reserve University in Cleveland. His expertise is in prevention and treatment of periodontal diseases. Bissada also maintains a private periodontal practice in Cleveland. He has authored and coauthored more than 150 articles in the peer-reviewed literature and has lectured extensively both nationally and internationally. Bissada can be reached at: email@example.com.