Research Article
Analysis of Physical and Mechanical Properties of Universal Composites under Different Types of Polishing before and after Acid Challenge
Table 5
Mean values (standard deviation) of roughness (Ra—µm) of Estelite Omega composite resins specimens, according to polishing and challenge types.
| Groups | Challenges | Initial | After polishing | After challenges | T0 | T1 | T2 |
| Control | Saliva | 0.07 (0.01) Aa | 0.07 (0.01) Aa | 0.08 (0.01) Aa | HCl | 0.07 (0.01) Aa | 0.07 (0.01) Aa | 0.11 (0.03) Aa |
| Wear | Saliva | 0.07 (0.01) Aa | 2.10 (0.71) Bb | 2.08 (0.78) Bb | HCl | 0.07 (0.01) Aa | 1.97 (0.90) Bb | 2.72 (0.89) Bb |
| Biscover | Saliva | 0.07 (0.01) Aa | 0.09 (0.03) Aa | 0.14 (0.09) Aa | HCl | 0.08 (0.02) Aa | 0.08 (0.03) Aa | 0.11 (0.04) Aa |
| Cosmedent | Saliva | 0.07 (0.01) Aa | 0.10 (0.03) Aa | 0.09 (0.02) Aa | HCl | 0.07 (0.02) Aa | 0.09 (0.02) Aa | 0.13 (0.05) Aa |
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Note: Means followed by the same capital letter in the column and lowercase in the row do not differ at 5% significance level ( ) by Tukey’s test. |