Efficacy of passive ultrasonic irrigation in removing residual root filling material during retreatment: an ex vivo analyses by micro-CT and confocal laser scanning microscope. G Ital Endodon [Internet]. 2024 Jun. 7 [cited 2025 Oct. 10];38(2). Available from: https://www.giornaleitalianoendodonzia.it/gie/article/view/357