The effectiveness of EDTA 17% as a cleaning solution for the fiber post space after filling with cements

Aim: To evaluate the resistance of union between a glass fiber post and radicular dentine after cleaning root with 17% EDTA filling different endodontic cements. Methods: Forty uniradicular bovine incisors were removed to obtain lengths 18 mm. Endodontic treatment was performed on all roots using cements (zinc oxide eugenol-based, OZE; cement based epoxy resin, AH) solutions (saline, SA or EDTA), which made it possible four groups: OZESA, OZEEDTA, AHSA AHEDTA. Subsequently, 12 mm material from roots, they prepared receive posts luted resin cement. execute mechanical cycles (2x106 cycles, 90 N, 4 Hz), coronal reconstruction silicon matrix. The then sliced (2-mm thick) perform push-out test. results analyzed analysis variance (one factor two factors) Tukey’s test (α=0,05). Results: Bond strength (Mpa) significantly higher for OZEEDTA (9,18) AHEDTA (8,70) than OZESA (6,06) (8,7). also presented highest values in cervical region (15,18) but lower apical (2,99). However, had homogeneous bond thirds. Conclusion: Regardless used, used as an irrigating solution, culminating dentin.