*XIANGYU REN1, Tamaki Hada2, Keyu Qi1, Maiko Iwaki2, Motohiro Uo3, Shunsuke Minakuchi1, Manabu Kanazawa2
(1. Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 2. Digital Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University , 3. Advanced biomaterials, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University)