11:30 AM - 11:37 AM
*Chiaki Araya1, Suguru Morita1, Masato Chikaishi1,2, Sachie Nakao1,2, Makoto Hirumuta1,2, Sawako Hori1, Hiroshige Taniguchi2, Tokio Chikaishi3 (1. Department of Dentistry and Oral-Maxillofacial Surgery, Chikaishi Hospital, Medical Corporation Touhoukai, 2. Department of Dysphagia Rehabilitation, Asahi University school of dentistry, 3. Department of Surgery ,Chikaishi Hospital,Medical Corporation Touhoukai )