1. Department of Periodontology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University (TMDU) Tokyo Japan
2. Department of Global Health Promotion Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University (TMDU) Tokyo Japan
3. Department of Dentistry and Oral‐Maxillofacial Surgery School of Medicine Fujita Health University Aichi Japan
4. Department of General Dentistry Tokyo Medical and Dental University Dental Hospital Tokyo Japan
5. Secomedic Hospital Chiba Japan
6. R&D Department Sunstar Inc. Osaka Japan
7. Medical Corporation Doyukai Tokyo Japan
8. Oral Care Perio Center Southern Tohoku Research Institute for Neuroscience Southern Tohoku General Hospital Fukushima Japan