Michelon C, De Carlo Bello M, Mastella Lang P, Pillar R, Souza Bier CA. Efficacy of passive ultrasonic irrigation in removing residual root filling material during retreatment: <i>ex vivo</i> analyses by micro-CT and confocal laser scanning microscope. G Ital Endodon [Internet]. 2024 Jun. 7 [cited 2024 Jul. 3];35. Available from: https://www.giornaleitalianoendodonzia.it/gie/article/view/357