Push-out bond strength of quartz fiber posts to root canal dentin using total-etch and self-adhesive resin cements

Abstract

Objectives: Several adhesive systems are available for cementation of fibre posts into the root canal. The aim of the present study was to investigate the push-out bond strengths of quartz fibre posts to root dentin with the use of different total-etch and self-adhesive resin cements. Study Design: Ninety single-rooted human premolars were endodontically treated and standardized post-spaces were prepared. Fibre posts were cemented with different luting agents: total-etch (Nexus NX3, Duo-Link, and RelyX ARC) and self-adhesive resin cements (Maxcem Elite, BisCem, and RelyX Unicem). Three post/dentin sections (coronal, middle and apical) were obtained from each specimen, and push-out bond strength test was performed in each section at a cross-head speed of 0.5 mm/min. Data was analyzed with two-factor and one-way analysis of variance and a post-hoc Tukey test at a significance level of p < 0.05. Results: Cement type, canal region, and their interaction significantly influenced bond strength. Significantly higher bond strength values were observed in the apical region of self-adhesive cements. Only Duo-Link and RelyX ARC cements resulted in homogeneous bond strengths. Conclusions: Cementation of quartz fibre posts using self-adhesive cements provided higher push-out bond strengths especially in the apical region, while total-etch cements resulted in more uniform bond strengths in different regions of the root canal. Key words: Push-out bond strength; quartz fibre post; total-etch resin cement; self-adhesive resin cement.

Comparison of the Bond Strength of Fiber-Reinforced Composite (FRC) Posts to Radicular Dentin Using Different Adhesive Cement: an in-vitro study

“…Results of this study expressed that bond strength of FRC posts to radicular dentin in total-etch cement is lower than the self-etch cement. We can explain that the narrow canal holds water by surface tension, making it difficult to replace water with bonding agents .Therefore, enhanced moisture content inside the root canal might have led to reduced bond strength values of total-etch systems, even though the root canals were dried carefully using paper points (5) .The results of studies carried out by Goracci et al (16) and Mazzoniet et al (8) are in contrast to our finding. The reason for this controversy could be the type of cements and duration of curing.…”

“…The self-adhesive cements do not require any pretreatment of the tooth substrate, once the cement is mixed, the application is accomplished in a single clinical step. (5) There are some controversies about the efficacy of these cements. (2,(6)(7)(8)(9)(10)(11)(12) Therefore, the aim of the present study was to compare the push-out bond strength of FRC posts to root dentin using four different adhesive cements with different mechanisms of adhesion.…”

Comparison of Resin Cement Insertion Techniques for Luting Fiberglass Posts

“…The bond strength of cement/post/dentin interface can be influenced by resin cement flowability, cement distribution in coronal, middle, and apical thirds of the root, the anatomy of the canal, and the orientation of the dentinal tubules [5,13,[20][21][22][23]. In the present study, there was no significant difference in the bond strength between the Centrix syringe or Lentulo drill technique, corroborating the findings of previous studies [14,[17][18][19].…”

Bond strength and fracture resistance of flowable bulk fill composite posts and cores in endodontically treated teeth

“…[1314] The results showed that the mean push-out bond strength value of the SDR group was higher than that of the X-Post group; however, no statistically significant difference ( P > 0.05) was observed. These values were higher than the values of a previous study, which used the SDR as luting cement and were lower than the values of the other study.…”