Yorimasa Ogata, DDS, PhD, is Professor and Chairman of the Department of Periodontology, Nihon University School of Dentistry at Matsudo, Japan. Dr. Ogata graduated from Nihon University School of Dentistry at Matsudo in 1984 and went on to complete his doctorate at the Graduate School of Tokyo Medical and Dental University, Department of Biochemistry, Japan in 1988. He then joined the staff of the Department of Periodontology, Nihon University School of Dentistry at Matsudo in 1988, first as an assistant professor and then as a lecturer before taking up his present position in 2001. He also spent a year (1992–3) as a visiting scientist with the MRC Group in Periodontal Physiology, School of Dentistry, University of Toronto, Canada. Dr. Ogata is a member of a number of societies, including the International Association for Dental Research, the American Academy of Periodontology, and the Japanese Society of Periodontology.