1. Department of Prosthetic Dentistry, Stomatognathic Physiology; University of Turku; Turku Finland
2. Turku Clinical Biomaterials Centre; University of Turku; Turku Finland
3. Division of Prosthodontics and Dental Geriatrics, Department of Oral Health Sciences, Faculty of Dentistry; University of British Columbia; BC Canada
4. Department of Oral and Maxillofacial Disease; Turku University Hospital; Turku Finland