*Tomofumi Sawada1, Yutaro Oyamada2, Akihiko Hatanaka1, Hiroaki Sato2, Tomoji Sawada3, Shinji Takemoto1
(1. Department of Biomedical Engineering, Iwate Medical University, 2. Department of Prosthodontics and Oral Implantology, School of Dentistry, Iwate Medical University, 3. Nishi-Kanto Branch)