*Chun Wei Chang1, Tamaki Hada2, Roubing Ha3, Yumika Soeda1, Motohiro Uo3, Manabu Kanazawa2, Shunsuke Minakuchi1
(1. Tokyo Medical and Dental University Gerodontology and Oral Rehabilitation, 2. Tokyo Medical and Dental University Digital Dentistry, 3. Tokyo Medical and Dental University Advanced Biomaterials)