Bond strength of Epiphany sealer prepared with resinous solvent

J Endod. 2009 Feb;35(2):251-5. doi: 10.1016/j.joen.2008.10.027. Epub 2008 Dec 12.

Abstract

This study evaluated in vitro the bond strength of Epiphany sealer prepared with resinous solvent of Epiphany system (Thinning resin) by using a push-out test. Forty maxillary canines were sectioned transversally below the cementoenamel junction to provide 4-mm-thick dentin disks that were centered in aluminum rings and embedded in acrylic resin. Root canals were prepared with tapered diamond bur. Intraradicular dentin was treated with 1% NaOCl for 30 minutes, 17% ethylenediaminetetraacetic acid for 5 minutes, and flushed with distilled water for 1 minute. The specimens were randomly distributed into 4 groups (n = 10) according to the filling material: GI, Epiphany without photoactivation; GII, Epiphany prepared with solvent without photoactivation; GIII, Epiphany followed by photoactivation; and GIV, Epiphany prepared with solvent followed by photoactivation. After the setting time, the specimens were submitted to the push-out test. The highest mean value (14.91 +/- 2.82 MPa) was obtained with Epiphany prepared with solvent followed by photoactivation (GIV), which was statistically different (P < .01) from the other groups. Groups I (8.15 +/- 2.47 MPa), II (9.46 +/- 2.38 MPa), and III (9.80 +/- 2.51 MPa) had inferior bond strength values and were statistically similar among themselves (P > .01). The resinous solvent of Epiphany system increased the bond strength of Epiphany sealer to dentin walls when followed by photoactivation.

MeSH terms

  • Cuspid
  • Dental Bonding*
  • Dental Stress Analysis
  • Dentin
  • Dentin-Bonding Agents
  • Humans
  • Light-Curing of Dental Adhesives
  • Materials Testing
  • Methacrylates*
  • Microscopy, Electron, Scanning
  • Resins, Synthetic*
  • Root Canal Filling Materials*
  • Solvents

Substances

  • Dentin-Bonding Agents
  • Methacrylates
  • Resins, Synthetic
  • Root Canal Filling Materials
  • Solvents
  • epiphany sealer
  • ethoxylated bis-phenol A dimethacrylate