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. 2020 Mar 3;7(3):283–292. doi: 10.1093/rb/rbaa003

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© The Author(s) 2020. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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(a) Percentage of SMHR after 12-day pH cycling. SD bars labelled with different letters show statistically significant difference, P < 0.05. (b) Lesion depth (µm), (c) mineral content (vol% µm) and (d) mineral content (vol% µm) versus different enamel depths (µm) of lesions (c) after 12-day pH cycling. Profiles are average % (± SD) for 10 enamel blocks per treatment group (5 scans per block). (e) TMR images of all treatment groups after pH cycling. Bars labelled with different letters are significant differences (P < 0.05)