1. Unit of Periodontics, Department of Medical Biotechnologies University of Siena Siena Italy
2. Unit of Endodontics and Restorative Dentistry, Department of Medical Biotechnologies University of Siena Siena Italy
3. Department of Medical Biotechnologies, Laboratory of Molecular Microbiology and Biotechnology (LAMMB) University of Siena Siena Italy
4. Unit of Dental Materials and Fixed Prosthodontics, Department of Medical Biotechnologies University of Siena Siena Italy