*Yuji Uchida1, Atsushi Takaichi1, Yuka Kajima1, Hidekazu Takahashi2, Manabu Kanazawa3, Noriyuki Wakabayashi1
(1. Department of Advanced Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 2. Course for Oral Health Engineering, Faculty of Dentistry, Tokyo Medical and Dental University , 3. Department of Digital Dentistry, Graduate School of Medical and Dental Sciences,Tokyo Medical and Dental University)