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Figure 2
Early caries lesions studied with transmission microradiography. (a) Microradiographs of the sound and demineralized zones with the enamel surface at the top. The dark zone at the top is where there is no sample. The sound enamel is almost uniform in density, while in the demineralized zone the region close to the surface is dark, showing less absorption of X-rays. This corresponds to the subsurface lesion. (b) Typical mineral distributions in bovine enamel obtained by microradiography after demineralization (open circles) in comparison with the untreated sound enamel (filled circles).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 16| Part 3| March 2009| Pages 398-404
doi:10.1107/S090904950900449X
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