Table 3 Mean ± standard deviation (SD) values of microhardness and Ca/P ratios for different time intervals

Microhardness (VHN)

(mean ± sd)

Sound Dentine

65.41 ± 4.25 ^A

65.95 ± 6.12 ^A

0.875ns

Demineralized Dentine

31.52 ± 1.78 ^C

30.85 ± 6.28 ^C

0.823ns

5 min remineralizing agents

50.18 ± 3.43^B

37.20 ± 0.33 ^C

< 0.001*

1-month remineralizing agents

54.12 ± 2.66^B

51.12 ± 1.45^B

0.057ns

p-value

< 0.001*

< 0.001*

Ca/P ratio

(mean ± sd)

Sound dentine

1.69 ± 0.02 ^A

1.65 ± 0.03 ^A

0.138ns

Demineralized Dentine

1.01 ± 0.09^B

1.05 ± 0.28^B

0.804ns

5 min remineralizing agents

1.86 ± 0.03 ^A

1.20 ± 0.08^B

< 0.001*

1-month remineralizing agents

1.90 ± 0.01 ^A

1.68 ± 0.10 ^A

0.004*

p-value

< 0.001*

< 0.001*