*Kae Harada1, Reiya Horinouchi1, Mamoru Murakami2, Yuji Kamashita1, Naohiro Shimotahira1, Yasuhiro Nishi1, Masahiro Nishimura1
(1. Department of Oral and Maxillofacial Prosthodontics, Kagoshima University, 2. Department of Removable Prosthodontics and Implant Dentistry, Kagoshima University Hospital)