Figure 2.

SEM image of dentin-resin interface when PB NT was applied after H3PO4 and NaOCl application. In both micrographs the hybrid layer was not apparent. a) For superficial dentin, few cylindrical resin tags were longer than that of Fig. 1a. Note the presence of resin tags whose necks contact directly with the adhesive or residual hybrid layer (bar=10 µm). b) For deep dentin, cylindrical and long resin tags were evident. These tags come virtually from the adhesive. (AL= Adhesive Layer) (bar=2 µm).