Effect of two resin cements and two fiber post surface treatments on push-out bond strength between fiber post and root dentin

J Contemp Dent Pract. 2015 Jan 1;16(1):7-12. doi: 10.5005/jp-journals-10024-1627.

Abstract

Aim: To evaluate the effect of fiber post surface treatments on push-out bond strength between fiber post and root dentin.

Materials and methods: Sixty bovine mandibular teeth (N=60) were sectioned (16 mm), prepared (12 mm), embedded with acrylic resin and then allocated into six groups (n=10): Gr1- Silane coupling agent (Sil)+Conventional resin cement AllC em (Al C); Gr2- Sil+Conventional resin cement RelyX ARC (ARC); Gr3- tribochemical silica coating (TBS)+AlC; Gr4- TBS+ARC; Gr5- No treatment (NT)+AlC; Gr6- NT+ ARC. Specimens were sectioned in four slices (2 mm) and submitted to push-out test. Fracture analyses were executed at x200. The values of the push-out bond strength were submitted to two-way ANOVA and Tukey test (α=0.05).

Results: Resincement did not affect the bond strength values (p=0.9674), fiber post surface treatment affected the push-out bond strength (p=0.0353), interaction between factors did not affected the values (p=0.338). Tukey test did not show differences between the groups. Adhesive failure between cement and dentin was predominantly.

Conclusion: The fiber post surface treatment appears have no Influence on bond strength between fiber post and root dentin.

Clinical significance: The tested fiber posts surface treatment appears do not Influence the fiber post bond behavior.

Keywords: Adhesion; Fiber post surface conditioning; Intraradicular dentin; Push-out test.

Publication types

  • Comparative Study

MeSH terms

  • Aluminum Oxide / chemistry
  • Animals
  • Bisphenol A-Glycidyl Methacrylate / chemistry
  • Cattle
  • Cementation / methods
  • Dental Bonding*
  • Dental Etching / methods
  • Dental Pulp Cavity / ultrastructure*
  • Dental Stress Analysis / instrumentation
  • Dentin / ultrastructure*
  • Ethanol / chemistry
  • Humidity
  • Materials Testing
  • Microscopy, Electron, Scanning
  • Polyethylene Glycols / chemistry
  • Polymethacrylic Acids / chemistry
  • Post and Core Technique / instrumentation*
  • Random Allocation
  • Resin Cements / chemistry*
  • Silanes / chemistry
  • Solvents / chemistry
  • Stress, Mechanical
  • Surface Properties
  • Temperature

Substances

  • Polymethacrylic Acids
  • RelyX ARC
  • Resin Cements
  • Silanes
  • Solvents
  • Ethanol
  • Polyethylene Glycols
  • Bisphenol A-Glycidyl Methacrylate
  • Prosil 28
  • Aluminum Oxide