*NOBUYUKI ARAI¹, TAKASHI HIRAOKA¹, KOZO HANAYAMA¹ (1. Department of Rehabilitation Medicine, Kawasaki medical School)

*Akihiro Nishino¹, Satomi Uemori² (1. rakuwakai marutamachi hospital OO Hospital rehabilitation department, 2. rakuwakai marutamachi hospital otorhinolaryngology)

*Rina Goto¹ (1. Sosai Kosei Kai Social Medical Corporation Matsunami General Hospital)

*Fumitaka Omori¹, Masako Kurachi², Aya Hirata³ (1. Fukuoka Dental College Hospital, 2. Department of Speech, Language and Hearing Sciences, International University of Health and Welfare, 3. International University of Health and Welfare)

*Takumi Makino¹, Keisi Okamoto¹, Akiko Nomoto¹, Tomohisa Onono¹, Ichiro Fujishima¹ (1. Seirei Hamamatsu City Rehabilitaion Hospital)

*Haruka Nakamoto¹ (1. Toyamakyoritubyoin)

*Takatoshi Iida^1,2, Tomomi Matsue², Michi Kanemoto², Jun Fujiwara^3,1, Hitomi Nishizaki^4,1, Hideki Aita⁵, Ritsuko Yamada⁶ (1. Division of Dysphagia Rehabilitation, Department of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido, 2. Health Sciences University of Hokkaido Home Dental Care Clinic, 3. Department of Dentistry & Oral Surgery, Sapporo Shuyukai Hospital , 4. Department of Geriatric Dentistry, Kanagawa Dental University, 5. Division of Geriatric Dentistry, Department of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido, 6. School of Nursing and Social Services (Gerontological Nursing), Health Sciences University of Hokkaido)