*Ryutaro Ito1, Yusuke Taniguchi1, Tadahiro Kashiwamura1, Nao Taniguchi2, Kae Kakura1, Hirofumi Kido1
(1. Section of Oral Implantology,Department of Oral Rehabilitation,Fukuoka Dental College, 2. Department of Preventive and Public Health Dentistry,Fukuoka Dental College)