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

Table 3. Weight percentages of calcium, phosphorus, fluoride content and the Ca/P ratio of enamel according to the different time points (mean ± SD) (n=30).

	Baseline	Demineralization	1-week	4-week
Ca	39.43 ± 2.03^a	32.18 ± 2.41^b	35.99 ± 3.42^c	36.89 ± 3.52^d
P	17.95 ± 0.52^a	16.14 ± 0.91^b	17.09 ± 0.82^c	17.29 ± 1.03^d
F	0.07 ± 0.09^a	0.00 ± 0.00^b	0.02 ± 0.04^a,b	0.05 ± 0.08^a
Ca/P	2.20 ± 0.08^a	1.99 ± 08^b	2.10 ± 0.12^c	2.13 ± 0.11^c

Different lowercase letters indicate significant differences within same row (p<0.05)