*Katsuko Ebihara¹, Akihito Sekiya², Sae Genkai¹, Reiko Machida¹, Miho Kodama¹, Tomohiro Tanabe^2,3, Fumiyo Tamura^1,4, Takeshi Kikutani^1,4 (1. Nippon Dental University Division of Rehabilitation for Speech and Swallowing Disorders, 2. Higashi Kawaguchi Hospital Division of Rehabilitation, 3. Higashi Kawaguchi Hospital Department of Orthopedic Surgery, 4. The Nippon Dental University Tama Oral Rehabilitation Clinic)

*Shuzo Miyahara^1,2, Kazuhisa Watanabe², Masaaki Nagae^2,3, Hiroyuki Umegaki² (1. Department of Geriatric Medicine, National Center for Geriatrics and Gerontology, 2. Department of Community Healthcare and Geriatrics, Nagoya University Graduate School of Medicine, 3. Department of Emergency General Medicine, Hyogo Prefectural Amagasaki General Medical Center)

*seiya tozawa¹, Yasuhiro Nishi¹, Nao Ikeda¹, Tomoaki Sakurai¹, Kae Harada¹, Keitaro Nishi², Truyo Namariyama³, Yasunori Nakamura⁴ (1. Department of Oral and Maxillofacial Prosthodontics, Graduate School of Medical and Dental Sciences, Kagoshima University, 2. Maxillofacial Diagnostic and Surgical Science, Graduate School of Medical and Dental Sciences, Kagoshima University, 3. Kagoshima University Hospital Medical Support Dental Division, 4. National Hospital Organization Kagoshima Medical Center Oral Surgery)

*Keiko Motokawa¹, Maki Shirobe¹, Yasuyuki Iwasa², Masanori Iwasaki³, Akiko Kurihara⁴, Yutaka Watanabe³, Hidenori Arai⁵, Hirohiko Hirano¹ (1. Tokyo Metropolitan Institute for Geriatrics and Gerontology, 2. Haradoi Hospital, 3. Hokkaido University, 4. Care Service Co., Ltd., 5. National Center for Geriatrics and Gerontology)

Risa Uyama¹, *YUKIKO SASAKI³, Toshiro Hirai^2,3, Kazuyoshi Baba ² (1. Department of Biochemistry, School of Dentistry, Showa University, 2. Department of Prosthodontics, School of Dentistry, Showa University, 3. Tsukimino Dental Office)

*Emi Takasaki¹, Mai Ohkubo^2,3, Keina Miura², Motohiko Akahori^2,3, Go Nakaya^2,3, Tetsuya Sugiyama^2,3, Tamamo Ikeda¹, Tomomi Ishigooka¹ (1. Department of Dental Hygiene, Chiba Dental Center, Tokyo Dental College, 2. Division of Dysphagia Rehabilitation, Chiba Dental Center, Tokyo Dental College, 3. Department of Oral Health and Clinical Science, Division of Dysphagia Rehabilitation, Tokyo Dental College)

*Hisae Honma¹ (1. Haburashitosupun)

*Yoshinari Morimoto¹, Megumi Hayashi¹, Yohei Tanaka¹, Hitomi Nishizaki¹, Aya Saeki¹, Takatoshi Iida² (1. Department of Geriatric Dentistry, Kanagawa Dental University, 2. Division of Dysphagia Rehabilitation, Department of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido)

*Naho Tominaga¹, Yosuke Tenpaku^1,2, Hideki Oguro¹, Maria Yamada¹, Satoshi Watanabe³ (1. Department of Rehabilitation, Nagoya Ekisaikai Hospital, 2. Graduate School of Health Science, Aichi Gakuin University, 3. Department of Maxillofacial Surgery, School of Dentistry, Aichi Gakuin University)

*Midori Miyashita¹ (1. Social Medical Care Corporation Hosei-kai Marunouchi Hospital)

*Kanako Ishibuchi¹, Keiko Moriyama¹, Satomi Uemura¹, Kanako Oyama¹, Tomoji Hirose¹ (1. Itoh Dento-Maxillofacial Hospital)

*Taiki Yanogawa¹, Shota Oda¹, Itsuki Koyama¹, Sakura Kagawa¹, Kenshu Ikeda¹, Yoshihiro Hayashi¹, Hyodo Masamitsu¹ (1. Kochi Medical School Hospital)