1. Maurizio D'Amario, DDS, PhD, research associate, Division of Restorative Dentistry and Oral Pathology, Department of Life, Health and Environmental Sciences, School of Dentistry, University of L'Aquila, L'Aquila, Italy
2. Francesco De Angelis, DDS, PhD, research associate, Unit of Restorative Dentistry, Department of Oral Science, Nano and Biotechnology, “G. D'Annunzio” University of Chieti, Italy
3. Mirco Vadini, DDS, PhD, research associate, Unit of Restorative Dentistry, Department of Oral Science, Nano and Biotechnology, “G. D'Annunzio” University of Chieti, Italy
4. Nicola Marchili, DDS, research associate, Division of Restorative Dentistry and Oral Pathology, Department of Life, Health and Environmental Sciences, School of Dentistry, University of L'Aquila, L'Aquila, Italy
5. Stefano Mummolo, DDS, research associate, Department of Life, Health and Environmental Sciences, School of Dentistry, University of L'Aquila, L'Aquila, Italy
6. Camillo D'Arcangelo, DDS, associate professor, Unit of Restorative Dentistry, Department of Oral Science, Nano and Biotechnology, “G. D'Annunzio” University of Chieti, Italy