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Mean and standard deviation (SD) for the Surface Roughness (Ra, μm) of the PMMA Base for solutions (n = 9)
| Solutions | Mean (SD) |
|---|---|
| Clene® | 0.12 (0.03) |
| Polident® | 0.12 (0.04) |
| 3% NaHCO3 | 0.12 (0.04) |
| PBS | 0.13 (0.03) |
| Filter-sterile tap water | 0.13 (0.03) |
Data indicate no statistically significant difference (P > 0.05)
