1. Department of Dentistry - Oral Radiology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
2. Department of Dentistry - Oral Radiology; Aarhus University; Aarhus Denmark
3. Department of Dentistry - Periodontology; Aarhus University; Aarhus Denmark
4. Center for Experimental and Preclinical Biomedical Research (CEPBR); Athens Greece
5. Department of Dentistry - Prosthetic Dentistry; Aarhus University; Aarhus Denmark