A comparative evaluation of the effect of eugenol exposure time on the bond strength of an etch-and-rinse and a self-etch adhesive to dentin: An <i>in vitro</i> study.

While, the self-etch systems are applied directly over the contaminated smear layer dentin, elucidating why the reduction in bond strength was more marked in the latter after pretreatment with eugenol-containing temporary restoration for 24 h.[ 3 , 5 ] The diffusion rate of eugenol released from ZOE restorations is said to increase gradually reaching a peak at 0.3 nmol/min for the first 24 h, following which a decreasing trend has been observed.

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