**About the Editors**

### **Yorimasa Ogata**

Yorimasa Ogata, DDS, PhD, is Dean, 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 (1992–1993) 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 (JSP). Now, he is a president of JSP.

### **Kenichi Imai**

Kenichi Imai DDS, PhD, is Professor and Chairman of the Department of Microbiology, Nihon University School of Dentistry (NUSD). Dr. Imai graduated from Asahi University School of Dentistry in 1997 and went on to complete his doctorate at the Graduate School of Mekai University School of Dentistry, Japan in 2001. He then joined the group of Takashi Okamoto as a postdoctoral fellow to pursue his interest on the transcriptional regulation and silencing of HIV. He was appointed as an Assistant Professor of NCU-GSMS and NUSD in 2008 and 2010, respectively. Dr. Imai has been a recipient of a Young Investigator award from the Society for Microbial Ecology and Disease and the ECC Yamaguchi Memorial AIDS Award from the Japanese AIDS Society for his work on HIV. Currently, he studies on host-microbial interactions and infectious diseases with a focus on periodontitis-associated and other oral bacteria and viral latency.
