Treatment Effects and Treatment Time in Adolescents With Crowded and Displaced Teeth Treated With Fixed Appliance Systems Without Extractions: A Multi-Centre Randomised Controlled Trial - Bokander Matilainen, Linda; Johansson, Kristina; Wiaderny, Michal; Brechter, Anna; Petrén, Sofia; D'Antò, Vincenzo; Paulsson, Liselotte (Orthodontics & craniofacial research, 2025)