1. Department of Dental Hygiene, Aichi Gakuin University Junior College
2. Health Support Committee in Japanese Society of Periodontology
3. Section of Geriatric Dentistry, Department of General Dentistry, Fukuoka Dental College
4. Department of Operative Dentistry, Endodontology and Periodontology, School of Dentistry, Matsumoto Dental University
5. Center for Oral Disease, Fukuoka Dental College
6. Department of Periodontology, Nihon University School of Dentistry at Matsudo
7. Division of Dental Sociology, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University
8. Department of Preventive Dentistry, Division of Social and Environmental Sciences, Okayama University
9. President, Non-Profit Organization The Japanese Society of Periodontology
10. Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University