2015 - 2019 Dean, Graduate School of Dentistry and School of Dentistry, Osaka University 2011 - Present Professor and Chair, Department of Preventive Dentistry, Graduate School of Dentistry, Osaka University 2000 - 2011 Director, Research Resources Center, Osaka University Graduate School of Dentistry 2000 - 2011 Professor and Chair, Department of Oral Frontier Biology, Graduate School of Dentistry, Osaka University 1997 - 2000 Associate Professor, Division of Special Care Dentistry, Osaka University Dental Hospital 1992 - 1994 Postdoctoral fellow, Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo