Table 1.
Surface roughness (Ra-µm) and hardness (KHN) mean values and standard deviation (SD) for the experimental groups.
| Experimental groups | Surface roughness (Ra-µm) Mean value ± SD |
Surface hardness (KHN) Mean value ± SD |
|---|---|---|
| Control (KM) | 0.41 ± 0.14 A | 81.48 ± 9.87 B |
| KM + 3% TiO2 | 0.55 ± 0.17 A | 105.87 ± 12.71 AB |
| KM + 5% TiO2 | 0.49 ± 0.07 A | 118.25 ± 4.21 A |
| KM + 7% TiO2 | 0.58 ± 0.16 A | 75.13 ± 6.61 B |
Different letters represent intergroup significant differences by one-way ANOVA followed by Tukey's test (p ≤ 0.05).