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)