Oral Rehabilitation, Niigata University Medical and Dental Hospital

Fixed Prosthodontics and Oral Implantology, School of Dentistry, Health Sciences University of Hokkaido

Department of Dental Hygiene, Tokyo Dental Junior College

Department of Removable Prosthodontics and Gerodontology, Tokyo Dental College

Department of Special Care Dentistry, Hiroshima University

Center for Education in Medicine and Health Sciences, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University

Department of Dysphagia Rehabilitation, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo

Specially-appointed Professor, Kyushu Dental University

Division of Dysphagia Rehabilitation and Aging Dentistry, School of Dentistry, Health Sciences University of Hokkaido

Tokyo Metropolitan Institute for Geriatrics and Gerontology