*Yuichiro Yamakawa¹, Takashi Iida¹, Masatoshi Iwasaki¹, Yoshihiro Iwata¹, Yuki Ishii¹, Kazuhiro Yoshida¹, Aoi Ebashi¹, Hiroyuki Oguro¹, Osamu Komiyama¹ (1. Department of Oral Function and Fixed Prosthodontics, Nihon University School of Dentistry at Matsudo)

*Yurika Ide¹, Jun Lee¹, Shinji Okada¹, Shunichi Kuroshaki¹, Katsunori Ito¹, Hideki Nishiura¹, Toshimitsu Iinuma¹ (1. Department of Complete Denture Prosthodontics, Nihon University School of Dentistry)

*Rie Hatakeyama¹, Hiroshi Oue¹, Miyuki Yokoi¹, Eri Ishida¹, Kazuhiro Tsuga¹ (1. Department of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences)