2 Maxillo-facial and Dental Unit, IRCCS Foundation Ca' Granda, Maggiore Policlinico Hospital, Department of Biomedical, Surgical and Dental Sciences, The University of Milan, Via Francesco Sforza 35, 20122, Milan, Italy. hdidier@email.it.
3 Istituto Stomatologico Italiano, Milan, Italy.
4 Maxillo-facial and Dental Unit, IRCCS Foundation Ca' Granda, Maggiore Policlinico Hospital, Department of Biomedical, Surgical and Dental Sciences, The University of Milan, Via Francesco Sforza 35, 20122, Milan, Italy.