Figure 3. FTIR imaging analysis of 400 x 400 µm consecutive fields from cervical and incisal parts for the year-old incisor shown in Fig. 1b. (a) Optical micrographs, (b) mineral:matrix ratio FTIR images, and (c) crystallinity FTIR images. Distribution of mineral:matrix and crystallinity values along a predentin-to-dentin line for the field marked with an asterisk is shown in Fig. 4b. P = Pulp, D = Dentin. Bar represents 1 mm.

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