D.D.S. in THe Nippon Dental University, Tokyo, JAPAN, 2001 Clinical trainee in Dept. of General Dentistry, at The Nippon Dental Hospital, 2001-2003 Ph.D. in Prosthodontics, Graduate school of The Nippon Dental University, 2008 Researcher at Dept. of Crown and Bridge, The Nippon Dental University, 2008-2010 Assistant professor, The Nippon Dental University Hospital, 2011-2015 Visiting researcher, Turku Clinical Biomaterials Centre-TCBC, University of Turku, Turku, FINLAND, 2015-2017 Senior assistant professor, Dept. of Crown and Bridge, The Nippon Dental University, Tokyo, JAPAN, 2017-