Shirban F, Khoroushi M, Shirban M. A New Solvent-free One-Step Self-Etch
Adhesive: Bond Strength to Tooth Structures. J Contemp Dent Pract
2013;14(2):269-274.
Abstract
Introduction: In recent years some new
solvent-free dental adhesives have been marketed. This study evaluated
bonding effectiveness of a new one-step solvent-free self-etch adhesive
in comparison with a common two-step self-etch adhesive used as gold
standard. Materials and methods: Flat enamel and dentin surfaces were
prepared on 60 incisors using silicon carbide papers. Clearfil SE Bond
(CSEB) and Bond 1SF (B1SF) adhesives were applied on enamel/dentin
surfaces in four groups (n = 15): (1) Enamel surface and CSEB, (2)
dentin surface and CSEB, (3) enamel surface and B1SF, (4) dentin surface
and B1SF. Composite resin buildups were carried out using Z100
composite resin. All the specimens were stored for 24 hours at 37°C and
100% relative humidity. After 500 rounds of thermocycling, shear bond
strength (SBS) test was performed using a universal testing machine at 1
mm/min crosshead speed. Data were analyzed with one-way ANOVA and a
post hoc Tukey test (α = 0.05). In each experimental group, two
additional specimens were prepared for scanning electron microscopy
evaluation. Results: Significant differences were observed between the
study groups (p < 0.001). The highest enamel/dentin bond strengths
were recorded in group 1 (CSEB) (p < 0.001). The SBS of the two-step
self-etch adhesive to enamel and dentin was significantly higher than
that of the one-step self-etch adhesive (p < 0.001). There was no
significant difference between enamel and dentin SBS with B1SF (p =
0.559). Conclusion: Within the limitations of the present study, when
bonded to enamel and dentin the solvent-free adhesive B1SF underperforms
as compared to CSEB as the control gold standard.
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