Push-out bond strengths of the dentine-sealer interface with and without a main cone

Abstract

Aim To evaluate the push-out bond strength of the dentine-sealer interface with and without main cone for three resin sealers. Methodology Thirty extracted maxillary premolar teeth with two separate canals were prepared using 0.04 taper Profile instruments to size 35-45. Teeth were divided into three groups for filling using AH Plus™, EndoREZ® or Resilon ® sealers. In each tooth, one canal was filled with a matching single-cone technique, and other was filled with sealer alone. A 1 mm slice of mid-root dentine was prepared for the push-out test. Failure modes after push-out were examined under microscopy and field emission-scanning electron microscopy. Data were analysed using two-way anova ..