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J DENT RES, Vol. 81, No. 2,
119-122 (2002)
DOI: 10.1177/154405910208100207
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Figure 1. TEM micrographs of bonding of Single Bond to acid-etched, deep dentin. The demineralized, epoxy-resin-embedded sections were stained with phosphotungstic acid and uranyl acetate. (a) A low-magnification overall view of the resin-dentin interface. Phase separation of the polyalkenoic acid copolymer (P) component of the adhesive could be seen as globular structures within the adhesive layer (A) and as a continuous layer (arrow) over the surface of the bonding substrate. A 3- to 4-µm-thick hybrid layer (H) could be seen above the laboratory demineralized dentin (D). Bar = 1 µm. (b) A high-magnification view showing the presence of intact, banded collagen fibrils within the hybrid layer. A, adhesive layer. Bar = 300 nm.
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