Vickers hardness number measured after lesion formation, pH cycling, and an increase in Vickers hardness number (ΔVHN) of each dentin group
| Group | Mean±standard deviation | ||||||
|---|---|---|---|---|---|---|---|
| Drying (n=10) | Salivary contamination (n=10) | ||||||
| VHNlesion | VHNpost | ΔVHN | VHNlesion | VHNpost | ΔVHN | ||
| Control | 12.12±1.86 | 13.91±1.73 | 1.79±1.22a,A | 11.56±1.61 | 14.01±2.07 | 2.45±1.23a,A | |
| AF | 13.16±1.24 | 27.31±2.80 | 14.15±2.73b,A | 12.23±1.06 | 23.97±3.19 | 11.73±3.78b,A | |
| DF | 11.67±2.11 | 28.30±2.34 | 16.63±3.10b,A | 11.12±1.63 | 25.85±4.18 | 14.73±4.57b,A | |
| NF | 11.72±2.73 | 18.88±2.88 | 7.17±2.17c,A | 13.04±2.52 | 17.22±1.51 | 4.19±2.00a,B | |
| p | 0.224 | <0.0001 | <0.0001 | 0.136 | <0.0001 | <0.0001 |
VHN: Vickers Hardness Number.
a,b,cThe lowercase letters indicate statistically significant differences between agents by Mann-Whitney U test (p<0.0083). A,BThe uppercase letters indicate statistically significant differences between surface conditions by Mann-Whitney U test (p<0.05).
p-value from Kruskal-Wallis test.
