- 1992 - 2000 Hokkaido University School of Dental Medicine
- 1992 - 2000 Professor
- 2000 - - 大学院歯学研究科口腔病態学講座・口腔顎顔面外科学分野 教授
- 2000 - - Professor,Department of Oral and Maxillofacial Surgery, Graduate School of Dental Medicine
- 1981 - 1992 北海道大学歯学部附属病院特殊歯科治療部 助教授
- 1981 - 1992 Associate Professor
- 1979 - 1981 北海道大学歯学部附属病院第一口腔外科 講師
- 1979 - 1981 Lecturer
- 1976 - 1979 Hokkaido University School of Dental Medicine
- 1976 - 1979 Research Associate
- 1974 - 1976 Chiba Cancer Center
- 1973 - 1974 Hokkaido University School of Dental Medicine
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