*Yuichi Ishiura¹, Kouta Ishii¹, Takashi Abe¹, Motohiro Munakata¹ (1. Showa University School of Dentistry, Department of Implant Dentistry)

*Atsuhiro Itsukaichi¹, Shinichi Sasaki¹, Tetsuo Yamamori^1,2, Toshikazu Ikeda², Chihaya Matsumoto², Rika Uchiyama², Koki Iijima², Kaede Hashihara¹, Ibuki Shimada¹, Takahashi Taiga¹, Takahito Sekine³, Jyun Itou², Takatsu Masaki^1,2 (1. Department of Oral Rehabilitation, Ohu University Graduate School of Dentistry, 2. Department of Prosthetic Dentistry, Ohu University School of Dentistry, 3. Tohoku-Hokkaido Branch)

*Daisuke Hasegawa¹, Tomoaki Mameno¹, Masahiro Wada¹, Ikuhisa Okuno¹, Kazunori Ikebe¹ (1. Department of Removable Prosthodontics and Gerodontology, Graduate School of Dentistry, Osaka University)