1. Department of Dysphagia Rehabilitation, Division of Oral Pathogenesis and Disease Control Asahi University School of Dentistry Gifu Japan
2. Department of Dentistry for Persons with Disabilities, Division of Oral Pathogenesis and Disease Control Asahi University School of Dentistry Gifu Japan
3. Yamaga Dental Clinic Kuwana Japan
4. Department of Dentistry and Oral‐Maxillofacial Surgery Chikaishi Hospital, Medical Corporation Touhoukai Gifu Japan
5. Department of Oral Surgery, Division of Oral Pathogenesis and Disease Control Asahi University School of Dentistry Gifu Japan