Abstract :
[en] Our experiment evaluated the microleakage in resin composite restorations bonded to dental
tissues with different adhesive systems. 40 class V cavities were prepared on the facial and
lingual surfaces of each tooth with coronal margins in enamel and apical margins in
cementum (root dentin). The teeth were restored with Z100 resin composite bonded with
different adhesive systems: Scotchbond! Multipurpose (SBMP) a 3-step Etch and Rinse
adhesive, Adper! Scotchbond! 1 XT (SB1) a 2-step Etch and Rinse adhesive, AdheSE®
One (ADSE-1) a 1-step Self-Etch adhesive and AdheSE® (ADSE) a 2-step Self-Etch
adhesive. Teeth were thermocycled and immersed in 50 % silver nitrate solution.
When both interfaces were considered, SBMP has exhibited significantly less microleakage
than other adhesive systems (respectively for SB1, ADSE-1 and ADSE, p = 0.0007, p <
0.0001 and p < 0.0001). When enamel and dentin interfaces were evaluated separately: 1)
for the Self-Etch adhesives, microleakage was found greater at enamel than at dentin
interfaces (for ADSE, p = 0.024 and for ADSE-1, p < 0.0001); 2) for the Etch and Rinse
adhesive systems, there was no significant difference between enamel and dentin interfaces;
3) SBMP was found significantly better than other adhesives both at enamel and dentin
interfaces.
In our experiment Etch and Rinse adhesives remain better than Self-Etch adhesives at
enamel interface. In addition, there was no statistical difference between 1-step (ADSE-1)
and 2-step (ADSE) Self-Etch adhesives.
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