Table 2.
Surface hardness (VHN) values of resin composites in different subgroups.
| Surface Treatment | Resin Composites | |||
|---|---|---|---|---|
| Conventional | Bulk-Fill (G4) | |||
| Micro-Hybrid (G1) | Nano-Filled (G2) | Flowable (G3) | ||
| No-Treatment (SG1) | 68.85 ± 3.54 A,1 | 55.26 ± 4.05 B,1 | 49.83 ± 9.48 B,1 | 48.77 ± 5.29 B,1 |
| Bleaching (SG2) | 68.97 ± 4.59 A,1 | 57.05 ± 7.12 B,1 | 41.11 ± 8.19 C,1,2 | 41.88 ± 7.76 C,1 |
| Fluoride (SG3) | 53.90 ± 5.69 A,2 | 51.31 ± 4.56 A,1 | 38.66 ± 3.64 B,2 | 39.96 ± 2.55 B,1 |
Different superscript numbers in each column (group) indicate significant differences between subgroups (Tukey’s, p < 0.05). Different superscript letters in each row (subgroup) indicate significant differences between groups (Tukey’s, p < 0.05).