Saad JR, Chávez-Andrade GM, Dantas AA, Segalla JC, Berbert FL, Espir CG, Crisci FS, de Andrade MF, Leonardo RD, Vaz LG, Basso KC. Ultrasound Effect in the Removal of Intraradicular Posts Cemented with Different Materials. J Contemp Dent Pract 2015; 16 (6):437-441.