| 1974. |
4. |
Research associate, School of Dentistry, Josai Dental University (later, Meikai University ) |
|
| 1976. |
4. |
Lecturer, School of Dentistry, Josai Dental University (later, Meikai University) |
|
| 1979. |
4. |
Associate professor, School of Dentistry, Josai Dental University (later, Meikai University) |
|
| 1983. |
9. |
Visiting research scientist, Faculty of Arts and Sciences, The Johns Hopkins University (Department of Biology) |
|
| 1988. |
4. |
Associate professor, School of Dentistry, Meikai University |
|
| 1993. |
12. |
Professor, School of Dentistry, The University of Tokushima |
|
| 2004. |
4. |
Professor, Institute of Health Biosciences, The University of Tokushima Graduate School |
|
| 2004. |
9. |
Visiting professor, Faculty of Dentistry, Gadjah Mada University |
|
| 2012. |
4. |
Professor Emeritus, The University of Tokushima |
|
| 2014. |
4. |
Vice president (International Affairs), The University of Tokushima |
|
| 2014. |
4. |
Adjunct professor, The University of Tokushima |
|
