Dislodgment Resistance of Bioceramic and Epoxy Sealers: A Systematic Review and Meta-analysis

J Evid Based Dent Pract. 2019 Sep;19(3):221-235. doi: 10.1016/j.jebdp.2019.04.004. Epub 2019 Apr 18.

Abstract

Objectives: The aim of the present systematic review was to evaluate if epoxy resin-based root canal sealers present superior push-out bond strength compared to calcium silicate-based root canal sealers.

Methods: The inclusion criteria consisted of in vitro studies that compared the push-out bond strength of epoxy resin-based and calcium silicate-based sealers. A systematic search was performed in the following databases for articles published until February 2018: PubMed, ScienceDirect, Scopus, Web of Science, and OpenGrey. The quality assessment and data extraction of the selected articles were performed. A meta-analysis of the pooled data and the subgroups according to the root thirds was carried out using the RevMan software (P < .05).

Results: The search resulted in 2292 studies. After the duplicate studies were removed and the title and abstract were read, 20 studies were selected and 17 were considered as having a low risk of bias. The pooled meta-analysis comparing epoxy resin-based (n = 467) and paste-to-paste calcium silicate-based root canal sealers (n = 467) demonstrated higher mean push-out bond strength values (P < .001) for the epoxy resin-based root canal sealers; the heterogeneity among studies was 85% (I2). The comparisons between epoxy resin-based (n = 358) and premixed ready-to-use calcium silicate-based root canal sealers (n = 358) also demonstrated a significant difference between the sealers (P < .05), with an I2 of 95%. The subgroup analysis showed that only in the middle third, were increased bond strength values for epoxy resin-based sealer observed (P < .001), with an I2 of 94%.

Conclusions: The epoxy resin-based sealer demonstratedhigher push-out bond strength than paste-to-paste calcium silicate-based root canal sealer regardless of the root third assessed. In addition, the epoxy resin-based sealer exhibited increased push-out bond strength in comparison with premixed ready-to-use calcium silicate-based root canal sealer when evaluating the middle third.

Keywords: Dental cements; Endosequence; MTA; Push-out bond strength; Root canal sealers; Systematic review.

Publication types

  • Meta-Analysis
  • Review
  • Systematic Review

MeSH terms

  • Calcium Compounds
  • Dental Bonding*
  • Dentin
  • Epoxy Resins
  • Humans
  • Materials Testing
  • Root Canal Filling Materials*

Substances

  • Calcium Compounds
  • Epoxy Resins
  • Root Canal Filling Materials