1. Department of Prosthetic Dentistry and Biomaterials Science, Institute of Dentistry
2. Turku Clinical Biomaterials Center (TCBC)
3. Department of Operative Dentistry, School of Dentistry, University of North Carolina
4. Welfare Division, City of Turku
5. Clinic of Oral Diseases, Pitkäkatu 4B, 20520, University Central Hospital