Table 2. Comparison of the microhardness at enamel and dentin with different materials using ANOVA test.
a,b Same lower-case alphabets indicate a significant difference (one-way ANOVA and Tukey post hoc test p<0.05).
GIC - glass ionomer cement; NSF - nano-silver fluoride; SD - standard deviation; ANOVA - analysis of variance
| Group | n | Mean hardness at enamel (SD) | Mean hardness at dentin (SD) |
| GIC | 10 | 230.20 (32.97)a | 67.66 (11.38) |
| Composite | 10 | 223.20 (17.96)b | 58.86 (7.14) |
| NSF + GIC | 10 | 287.00 (34.964)ab | 79.34 (16.59) |
| NSF + composite | 10 | 246.20 (17.82) | 70.04 (6.83) |
| Total | 40 | 246.65 (35.57) | 68.97 (12.72) |