- 1997 - 2001 Oita Medical University
- 1997 - 2001 Assistant Professor, Faculty of Medicine,
- 2001 - - 岩手医科大学歯学部 教授
- 2001 - - Professor, School of Dentistry,
- 1983 - 1997 Oita Medical University
- 1983 - 1997 Lecturer, Faculty of Medicine,
- 1981 - 1983 Oita Medical University
- 1981 - 1983 Research Associate, Faculty of Medicine,
- 1981 - Tokyo Medical and Dental University Faculty of Dentistry
- 1981 - Research Associate, Faculty of Dentistry,
- Iwate Medical University
- Oita Medical University
- Tokyo Medical and Dental University
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