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Results of color alteration (ΔE) for food-simulating solutions.
| Food-simulating solution | Mean (±SD) | Homogeneous groups a | |
|---|---|---|---|
| Heptane | 4.41 (±2.32) | A | |
| Citric acid | 4.24 (±2.28) | A | |
| Ethanol | 4.02 (±2.34) | A | B |
| Artificial saliva | 3.76 (±2.37) | B | |
Different letters mean significant differences among groups (p < .05).
