*Miwa Yamamoto¹, Kaori Kojima^2,3, Satoshi Furuya⁴ (1. Asahi rousai Hospital, 2. Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine, Hamamatsu, 3. Kojima Dental Clinic, 4. Yamanashi City Makioka Hospital)

*Yuko Uchijo¹, Yoko Nakano¹, Kasumi Itou¹, Hikari Fukatsu¹ (1. Fukatsu Dental Clinic)

*Masako Ohshima¹, Noriyuki Kubota² (1. shinyachiyohospital, 2. special elderly nursing home okayama silver center)

*Hirotaka Isse^1,2,3,4, Satoshi Furuya⁵, Kyoko Tani⁶ (1. Medical corporation ENGAGE Ai home Dental Clinic, 2. Toyohashi Dental Association, 3. Aichi Dental Association, 4. Japan Dental Association, 5. Yamanashi City Makioka Hospital, 6. TANI Dental Clinic)

*Kaori Kyoda^1,5, Masato Yabushita^1,5, Yoriko Ishimiya^2,5, Takahashi Chiaki^3,5, Osamu Kawakami^4,5, Isao Matsushita^3,5 (1. Rehabilitation Center, Kanazawa Medical University Hospital, 2. Nursing Division, Kanazawa Medical University Hospital, 3. Department of Physical and Rehabilitation Medicine, Kanazawa Medical Univ., 4. Department of Head and Neck Surgery, Kanazawa Medical Univ., 5. Swallowing Center, Kanazawa Medical University Hospital)