Effects of root canal enlargement on unprepared areas and coronal dentine thickness of three‐rooted maxillary first premolars with different root configurations: a stepwise micro‐CT study - Versiani, Marco Aurélio; Carvalho, Kleber Kildare Teodoro de; Martins, Jorge N. R.; Custódio, Antonio Luis Neto; Castro, Maurício A. A.; Akaki, Emílio; Sousa, Yara Teresinha Corrêa Silva; Sousa Neto, Manoel Damião de (International Endodontic Journal, 2022)