1. Department of Engineering, University of Messina, Contrada di Dio, 98166 Messina, Italy
2. Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, University of Messina, Via Consolare Valeria 1, 98100 Messina, Italy
3. Department of Prosthodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pimpri, Pune 411018, Maharashtra, India
4. Multidisciplinary Department of Medical-Surgical and Dental Specialties, Second University of Naples, 80100 Naples, Italy