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| Groups | n | Mean | SD |
| CuO 0.5% | 8 | 7.5 | 0.756 |
| ZnO 0.5% | 8 | 6 | 0 |
| HA 1% | 8 | 6 | 0 |
| AgO 0.5% | 8 | 8.5 | 0.535 |
| HA 0.5% | 8 | 6 | 0 |
| Control | 8 | 6 | 0 |
| CuO 1% | 8 | 8 | 0.535 |
| TiO2 1% | 8 | 6 | 0 |
| AgO 1% | 8 | 9.13 | 0.641 |
| TiO2 0.5% | 8 | 6 | 0 |
| ZnO 1% | 8 | 6 | 0 |
| Total | 88 | 6.83 | 1.215 |
