[1]Orthodontic Postgraduate Programme;
Dental School;
Slovak Medical University;
83303 Bratislava;
Slovakia;
[2]Orthodontics Department;
School of Dentistry;
University of Genova;
16132 Genova;
Italy;
[2]Orthodontics Department;
School of Dentistry;
University of Genova;
16132 Genova;
Italy;
[2]Orthodontics Department;
School of Dentistry;
University of Genova;
16132 Genova;
Italy;
[3]Department of Biomedical;
Odontostomatological Sciences and of Morphological and Functional Images;
University of Messina;
98122 Messina;
Italy;
[4]Department of Neurosciences;
Reproductive and Odontostomatological Sciences;
School of Medicine;
University“Federico II”;
80131 Napoli;
Italy;
[5]Department of Orthodontics;
School of Dentistry;
University of Brescia;
25123 Brescia;
Italy;
[5]Department of Orthodontics;
School of Dentistry;
University of Brescia;
25123 Brescia;
Italy;
[5]Department of Orthodontics;
School of Dentistry;
University of Brescia;
25123 Brescia;
Italy;
Orthodontics; Intraoral elastics; Periodontal damage; Tooth extraction; Pre-prosthetic treatment;