Musso, C. and Machado, R. 2023. Extensive external-internal root resorption 22 years after trauma and inadequate endodontic treatment: a case report with 20-years follow-up. Giornale Italiano di Endodonzia. 37, 1 (Feb. 2023). DOI:https://doi.org/10.32067/GIE.2023.37.01.06.