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Figure 2. Scanning electron micrographs of the interface between Single Bond and normal dentin (A), Single Bond and discolored dentin (B), Clearfil SE Bond and normal dentin (C), and Clearfil SE Bond and discolored dentin (D). Line analysis curves from resin composite (C) through dentin (D) via adhesive resin (R) and x-ray dot-map images of Ca, Sn, and Cu distribution of the same area are demonstrated. The white line is the position of line scanning of elemental traces.
