1. Department of Restorative Dentistry and Cariology; Institute of Dentistry; University of Turku; Turku Finland
2. Adhesive Dentistry Research Group; Biomaterials and Medical Device Research Programme; Turku Finland
3. Turku University Hospital; TYKS; Turku Finland
4. Department of Oral and Maxillofacial Diseases; University of Helsinki; Helsinki Finland
5. Helsinki University Hospital; Helsinki Finland
6. Research Unit of Oral Health Sciences; and Medical Research Center Oulu (MRC Oulu); Oulu University Hospital; University of Oulu; Oulu Finland
7. Department of Cariology; Institute of Dentistry; University of Oulu; Oulu Finland
8. Department of Biomedical and Neuromotor Sciences; University of Bologna; Bologna Italy
9. The Dental College of Georgia; Augusta University; Augusta GA USA