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Methodologies to analyze the alterations of enamel subjected to abrasionerosion

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Table 1: Survey of the methods described in the text with respect to advantages and disadvantages, suitability for use with erosion (after few minutes of acidic challenge), as well as to type of analysis (quantitative or qualitative)
Figure 1: Knoop indentation. A: Schematic image; B: Indentation in enamel
Figure 3: Control

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