Table 2 Comparison of ∆E of the study groups at different time points
From: Composite surface roughness and color change following airflow usage
Group | Time | ||
|---|---|---|---|
∆E1 | ∆E2 | P value (∆E1 − ∆E2) | |
Airflow with calcium carbonate | 5.33 ± 2.37 | 4.13 ± 3.63 | 0.021 |
Airflow with sodium bicarbonate | 5.08 ± 3.85 | 4.57 ± 2.77 | 0.861 |
FlexiDisc | 5.21 ± 2.72 | 4.19 ± 2.81 | 0.618 |