Comparison of enamel bond fatigue durability between universal adhesives and two-step self-etch adhesives: Effect of phosphoric acid pre-etching

Dent Mater J. 2018 Mar 30;37(2):244-255. doi: 10.4012/dmj.2017-059. Epub 2017 Nov 23.

Abstract

The effect of phosphoric acid pre-etching on enamel bond fatigue durability of universal adhesives and two-step self-etch adhesives was investigated. Four universal adhesives and three two-step self-etch adhesives were used. The initial shear bond strengths and shear fatigue strengths to enamel with and without phosphoric acid pre-etching using the adhesives were determined. SEM observations were also conducted. Phosphoric acid pre-etching of enamel was found to increase the bond fatigue durability of universal adhesives, but its effect on two-step self-etch adhesives was material-dependent. In addition, some universal adhesives with phosphoric acid pre-etching showed similar bond fatigue durability to the two-step self-etch adhesives, although the bond fatigue durability of universal adhesives in self-etch mode was lower than that of the two-step self-etch adhesives. Phosphoric acid pre-etching enhances enamel bond fatigue durability of universal adhesives, but the effect of phosphoric acid pre-etching on the bond fatigue durability of two-step self-etch adhesives was material-dependent.

Keywords: Enamel bond fatigue durability; Phosphoric acid pre-etching; Two-step self-etch adhesive; Universal adhesive.

Publication types

  • Comparative Study

MeSH terms

  • Acid Etching, Dental*
  • Dental Bonding / methods*
  • Dental Cements / chemistry*
  • Dental Restoration Failure
  • Dental Stress Analysis
  • Humans
  • In Vitro Techniques
  • Materials Testing
  • Microscopy, Electron, Scanning
  • Molar
  • Phosphoric Acids / chemistry*
  • Resin Cements / chemistry*
  • Shear Strength

Substances

  • Dental Cements
  • Phosphoric Acids
  • Resin Cements