Fig. 10.

TEM micrographs of (A) dentin bonded with a coating of iBondⁱ, followed by solvent evaporation and light-curing. The bonded surface was then coated with Scotchbond Multi-Purpose^a adhesive that was light-cured. After soaking in 50% ammoniacal silver nitrate overnight, the specimens were processed for transmission electron microscopy (TEM). Note the moderate silver nanoleakage in the bottom layer of iBondⁱ adhesive (A) and the near absence of nanoleakage in the SBMP^a adhesive (R). (B) Dentin bonded with one layer of Xeno III^f, then the solvent was evaporated and the surface light-cured. The bonded surface was covered with one coat of water-free SBMP^a adhesive (R). Note there is much less silver nanoleakage in (R) than in (A) (from Ito et al.⁵², with permission).