Table 3

Minerals content	A1	A2	B2	P-value
Minerals content	Mean (SD)	Mean (SD)	Mean (SD)	P-value
Calcium (Ca)	38.05 (13.22)	24.31 (0.88)	25.7 (2.24)	0.024
Phosphorous (P)	14.86 (0.15)	15.88 (1.24)^a	15.63 (0.78)^a	0.006
Calcium-to-phosphorous ratio (Ca/P)	2.55 (0.86)^a,b	1.53 (0.06)^a	1.64 (0.07)^b	< 0.001
Oxygen (O)	33.07 (8.93)^a,b	40.85 (3.15)^a	36.67 (2.78)^b	0.003
Carbone (C)	11.89 (3.98)	15.9 (4.65)^a	20.2 (1.55)^a	< 0.001
Chlorine (Cl)	0.46 (0.04)	0.46 (0.22)	0.42 (0.26)	0.407
Sodium (Na)	0.88 (0.09)^a	1.05 (0.22)^a	0.87 (0.23)	0.033
Silicon (Si)	0.32 (0.09)^a,b	1.12 (0.48)^a,c	0.49 (0.15)^a	< 0.001

^aCorrected P-value at < 0.016 indicate significant differences.
^bCorrected P-value at < 0.016 indicate significant differences.
^cCorrected P-value at < 0.016 indicate significant differences.
A1 = sample underwent prophylaxis cleaning, followed by application of MI Varnished, and treatment with Recaldent™.
A2 = sample underwent prophylaxis cleaning, followed by treatment with Recaldent™.
B2 = sample underwent only treatment with Recaldent™.
Kruskal-Wallis test was used for change in mineral content between the 3 groups (A1, A2, B2) of comparison.
Mann Whitney U test was used for between 2 groups (A1 and A2; A1 and B2; A2 and B2).
Bonferroni correction was applied where multiple comparisons were conducted (A1 with A2 and A1 with B2 and A2 with B2).
SD = standard deviation.