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Related Experiment Videos

Self-etching bonding systems: in-vitro shear bond strength evaluation.

P D Brandt1, F A de Wet, I C du Preez

  • 1Division of Dental Materials, School of Dentistry, University of Pretoria. pbrandt@medic.up.ac.za

SADJ : Journal of the South African Dental Association = Tydskrif Van Die Suid-Afrikaanse Tandheelkundige Vereniging
|March 28, 2006
PubMed
Summary

This study compared self-etching dental bonding agents to a total-etch control. Clearfil SE Bond, ABF, and Optibond Solo Self-etch showed comparable dentine shear bond strength to the control.

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Area of Science:

  • Dental Materials Science
  • Adhesive Dentistry
  • Biomaterials Engineering

Background:

  • Self-etching bonding agents offer simplified clinical application compared to traditional total-etch systems.
  • Evaluating the dentine shear bond strength (SBS) of self-etching agents is crucial for their clinical efficacy.
  • Standardized smear layer preparation is essential for reproducible in vitro bond strength testing.

Purpose of the Study:

  • To compare the in vitro dentine shear bond strength (SBS) of five self-etching bonding agents against a total-etch control.
  • To determine which self-etching agents exhibit comparable or superior bond strength to a conventional total-etch system.
  • To provide data for selecting effective dentine bonding agents in restorative dentistry.

Main Methods:

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  • Sixty human third molars were prepared to expose superficial dentine with a standardized smear layer.
  • Five self-etching agents (Xeno III, Clearfil SE Bond, ABF, Optibond Solo Self-etch, Adper Prompt-L-Pop) and one total-etch control (Scotchbond Multipurpose Plus) were tested.
  • Resin stubs were bonded to dentine, and shear bond strength was measured using an Instron testing machine at 0.5 mm/min crosshead speed.

    • Main Results:

    • Clearfil SE Bond (26.2 MPa), ABF (25.9 MPa), and Optibond Solo Self-etch (21.9 MPa) demonstrated shear bond strengths comparable to the control (Scotchbond Multipurpose Plus, 24.1 MPa).
    • Xeno III (17.3 MPa) and Adper Prompt-L-Pop (15.4 MPa) exhibited significantly lower shear bond strengths than the control (p < 0.05).
    • Statistical analysis using ANOVA confirmed significant differences among the tested bonding agents.

    Conclusions:

    • Clearfil SE Bond, ABF, and Optibond Solo Self-etch are viable alternatives to the tested total-etch system, offering comparable dentine bond strength.
    • Xeno III and Adper Prompt-L-Pop may have limitations in achieving optimal dentine bond strength in this in vitro model.
    • Further research is recommended to evaluate enamel bond strength and micro-leakage for these agents.