Nano-Hydroxyapatite Gel and Its Effects on Remineralization of Artificial Carious Lesions

Figure 1

(a) The second premolar teeth (A) were cut in the horizontal direction below cementum-enamel junction for 1 mm and vertically sectioned at the central groove in the mesiodistal direction (A). The crown (B) was embedded in the resin (C) and flattened the surface for 4 × 4 mm² (D). The hardness was evaluated on the flatten area at 100 μm far from each indentation (E) in the Vickers hardness testing machine (b). Polarized light micrograph (c) and scanning electron micrograph (X2.0K) (d) were used to verify the intact enamel for the tested group.

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(b)

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