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Table 2 Mean values and standard deviation of the baseline (VHN1) and post-pH cycling (VHN2) surface microhardness, and mean values for percentage of surface microhardness loss (%VHN) after treatment and pH cycling

From: Effect of fluoride varnish with added casein phosphopeptide-amorphous calcium phosphate on the acid resistance of the primary enamel

Group

VHN1

VHN2

%VHN

No treatment (control)

350.00 ± 38.64A

92.00 ± 24.29B

−73.40d

MI Varnish

353.30 ± 30.25A

279.01 ± 27.13B

−20.80a

Clinpro White

376.40 ± 36.74A

245.20 ± 28.91B

−34.60b

Duraphat

387.20 ± 31.12A

163.00 ± 27.92B

−57.80c

  1. Different uppercase letters indicate significant difference between baseline and post- pH cycling surface microhardness values of each varnish (paired-T test, P < 0.05, n = 10 incisors in each group). Different lowercase letters indicate significant differences among in the %VHN between groups (one-way ANOVA and Tukey’s test, P < 0.05, n = 10 incisors in each group)