*Yoshinori Nishida1, Ichizo Morita2, Seiichiro Takami2, Yoshihiro Yamaguchi1, Shinya Tkagi1, Yoshiaki Kato1, Mitsuru Adachi1, Eri Daikoku1, Kyoko Inamoto3, Hisatomo Kondo1, Shigemitsu Sakuma1
(1. Department of Fixed Prosthodontics and Oral Implantology, School of Dentistry, Aichi Gakuin University, 2. Japanese Red Cross Toyota College of Nursing, 3. Department of Dental Education, School of Dentistry, Aichi Gakuin University)