Prof. Andrea Scribante is the Head of the Dental Hygiene Scool of The University of Pavia. He currently works as an Associate Professor at the School of Dentistry, School of Dental Hygiene, and the Postgraduate Program in Orthodontics (University of Pavia, Italy). He is a clinical resident at the Unit of Orthodontics and Paediatric Dentistry in the Section of Dentistry of the Department of Clinical, Surgical, Diagnostic, and Paediatric Sciences at the University of Pavia. He actively participates in academic publications and has signed over 190 publications in Scopus/PubMed-indexed international journals. He is also on the Editorial Committee or is an Editorial Board Member of many international journals Cristina Grippaudo is an Associate Professor in Orthodontics at the Institute of Clinical Dentistry, Catholic University of the Sacred Heart. She received her Doctor of Dental Science at the Sapienza University of Rome. She is also a Professor in the graduate Course in Dentistry, in the Course of Speech Therapy, and Director of the Course in Dental Hygiene. Her research interests include Orthodontics, Malocclusion, Occlusion, Primary Failure of Eruption, Orthodontic treatment need Indexes, Orthodontic Brackets, Bacteria