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Figure 3. Transmission electron micrographs showing the nanoleakage in carbamide-peroxide-bleached enamel that was treated with sodium ascorbate prior to being acid-etched and the application of the Prime&Bond NT adhesive. (A) A low-magnification view of the resin-enamel interface. C, resin composite; A, adhesive containing nanofiller particles; E, prismatic enamel. (B) A high-magnification view showing the presence of isolated, electron-dense silver grains (open arrowheads) within the etched, resin-infiltrated enamel (E). Bubble-like structures that were previously observed in the bleached enamel were absent after sodium ascorbate treatment.
J DENT RES, Vol. 81, No. 7,
477-481 (2002)
DOI: 10.1177/154405910208100709
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