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Influence of selective enamel etching on the bonding effectiveness of a new "all-in-one" adhesive
Cecilia Goracci1, Carlo Rengo, Leonardo Eusepi
1Department of Dental Materials and Fixed Prosthodontics, Policlinico Le Scotte, University of Siena, Viale Bracci, Siena 53100, Italy. cecilia.goracci@gmail.com
Purpose:
To evaluate in vitro the all-in-one adhesive G-Bond Plus/G-aenial Bond (GBP), used according to the selective enamel etching (SEE) technique, compared to Optibond FL, an etch-and-rinse adhesive tested as control (C).
Methods:
133 molars provided specimens for enamel and dentin shear bond strength (SBS) testing, microleakage measurements in class 5 restorations, and scanning electron microscope observations of demineralization patterns produced by GBP and 37% phosphoric acid (PA).
Results:
On enamel: C displayed the highest SBS. PA etching significantly increased enamel SBS of GBP. No statistically significant difference in SBS was noted among the bonding procedures on dentin. On both substrates, C revealed the most satisfactory seal. PA pre-etching did not significantly affect the sealing ability of GBP on either substrate.
