Figure 1.
Digital photographs of enamel samples a) artificially demineralized, b) artificially remineralized and c) naturally carious and d) healthy enamel, outlining regions of interest (box) selected for SMR measurement.
The line within the box represents the track measured by SXRD.
Table 1.
Treatment regimen for tooth samples.
Figure 2.
Intensity versus azimuthal angle taken from a typical (002) Bragg reflection of an enamel diffraction pattern.
Pronounced peaks highlight a high degree of texture in this sample. Both peaks have been fitted to a Gaussian plus baseline (red and green lines respectively).
Figure 3.
A track (highlighted in Fig. 1) taken through each tooth slice (artificial demineralization, artificial remineralization, healthy control and natural caries) from enamel surface to EDJ measuring the change in FWHM of the azimuthal peaks of the (002) reflection.
Figure 4.
Changes in (002) Bragg peak position in a track (highlighted in Fig. 1) through each tooth slice (artificial demineralization, artificial remineralization, healthy control and natural caries) from enamel surface to EDJ.
Figure 5.
Scanning microradiography area scans showing the relative mineral density distribution of a) artificially demineralized lesion, b) artificially remineralized enamel, c) natural caries lesion, d) healthy enamel.
The scale bar and colour intensity bar are representative for all images.
Figure 6.
SEM images of enamel from the surface of a) artificially demineralized b) artificially remineralized c) naturally carious (surface) and d) healthy region.
The inset to d) shows the bulk of the carious region ∼150 µm from the surface.