Assistant professor Gothenburg University, 1974-1986, associate professor, 1986-1992, professor, chairman, since 1995, division head oral rehabilitation and cell biology, since 1995. Professor Oslo University, 1992-1993. Researcher Scandinavian Institute Dental Materials, Oslo, 1992-1993.
Adjunct professor University Pennsylvania, since 1994. Board directors Faculty Odontology Gothenburg University, Biomaterials Research Center, Gothenburg, National Board Health and Welfare, Sweden.