1 Department of Dentoalveolar Surgery, Implant Surgery and Radiology, Faculty of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.
2 Department of Preventive Dentistry, Periodontology and Implant Biology, Faculty of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece. andreasgrigor@gmail.com.
3 School of Agriculture, Laboratory of Agronomy, Aristotle University of Thessaloniki, Thessaloniki, Greece.
4 Department of Preventive Dentistry, Periodontology and Implant Biology, Faculty of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.