Evaluation of Push-out Bond Strength of a Resin Sealer to Dentin after a Final Flush of Three Irrigants

Abstract

To evaluate the push-out bond strength of resin-based sealer to root dentin after a final flush of three different irrigants. Thirty extracted human mandibular premolars were sectioned 4 mm below the cement-enamel junction and 60 horizontal disks of 2 mm from middle one-third of the root were prepared. The disks were immersed in 3% sodium hypochlorite for 1 minute, and after drying the disks, they were finally flushed with the following irrigants: group I-Chitosan solution, group II-Morinda citrifolia juice (MCJ), and group III-ethylenediaminetetraacetic acid (EDTA). The disks were filled with AH Plus sealer, and after 7 days, the disks were subjected to push-out bond strength using a universal testing machine. EDTA had the highest push-out bond strength followed by MCJ and then chitosan. Chitosan and MCJ can be used as alternative irrigants as a final flush during the cleaning and shaping of the root canals. EDTA, chitosan solution, and MCJ are efficient in smear layer removal which thereby increases better sealer penetration and prevents the dislocation of obturating materials.