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. 2016 May-Jun;24(3):198–203. doi: 10.1590/1678-775720150583

Table 2. Surface microhardness values for microhardness test and fluorescence values for LF pen in different time points (mean ± SD) (n=30).

Baseline Demineralization 1-week 4-weeks
SMH 267.80 ± 17.29a 60.96 ± 6.80b 92.60 ± 19.81c 113.78 ± 19.57d
LF pen 4.13 ± 0.40a 21.17 ± 2.21b 18.21 ± 3.38c 17.82 ± 2.72c

Significant differences are indicated within same row by different superscript letters (p<0.05)