Push-out bond strength of intra-orifice barrier materials: Bulk-fill composite versus calcium silicate cement

Abstract

Background. The aim of this study was to compare the push-out bond strengths of calcium silicate-based ProRoot MTA and Biodentine cements and SureFil SDR and EverX Posterior bulk-fill composite resins. Methods. Twenty-four single-rooted maxillary central incisors were sectioned below the cementoenamel junction, and the root canals were instrumented using rotary files. Thereafter, a parallel post drill was used to obtain a standardized root canal dimension. The roots were randomly assigned to one of the following groups with respect to the intra-orifice barrier used: ProRoot MTA; Biodentine; SureFil SDR; EverX Posterior. Five 1-mm-thick sections were obtained from the coronal aspect of each root. Push-out bond strength testing was performed and data were analyzed with Kruskal-Wallis and post hoc Dunn tests (P<0.05). Results. SureFil SDR and EverX Posterior bulk-fill composite resins’ bond strengths were significantly higher than ProRoot MTA and Biodentine calcium silicate cements. However, no statistically significant differences were observed between bulk-fill composite resins values and calcium silicate cement values. Conclusion. Within the limitations of present study, calcium silicate-based ProRoot MTA cement’s push-out bond strength was lower than those of Biodentine, SureFil SDR and EverX Posterior materials.

Evaluating the Effect of Different Intra-Orifice Barriers and Various Bleaching Agents on the Fracture Resistance of Teeth After the Walking Bleach Procedure: An In Vitro Study

“…In the in vitro study conducted by Aktemur Türker et al on immature necrotic teeth with different intra-orifice sealers, MTA showed the lowest fracture strength than other materials: composite resin and RMGIC [ 38 ]. The study by Özyurek et al, which analyzed the push-out bond strength of intra-orifice sealers, concluded that ProRoot MTA and Biodentine calcium silicate cement have lower bond strength than SureFil SDR and EverX Posterior bulk-fill composite resins [ 39 ].…”

Comparative evaluation of the pushout bond strength of two root-end materials: An in vitro study

“…[12] The presence of nanosphere particles with a diameter of 1 × 10 −3 μm allows for the material to enter dentinal tubules, interact with the dentine liquid and form a mechanical bond on complete set of the material. [13] The mode of delivery and manipulation of the material also has an effect on the final set and adaptation of the material to the tooth surface.…”