Table 3.
The mean values and standard deviations of ΔL*, Δa*, Δb* and ΔE* for the staining solutions and distilled water
| Product | Nanofilled composite | Flowable composite | P value | |
|---|---|---|---|---|
| Tea | ||||
| ΔL* | −28.6±0.5 | −27.3±1.3 | 0.098 | |
| Δa* | 6.6±0.5 | 6.2±0.4 | 0.114 | |
| Δb* | 0.8±1.5 | 1.7±1.1 | 0.297 | |
| ΔE* | 29.4±0.5 | 28.1±1.2 | 0.073 | |
| Cola | ||||
| ΔL* | −1.4±0.4 | −1.9±0.4 | 0.085 | |
| Δa* | 3.1±0.4 | 3.4±0.5 | 0.197 | |
| Δb* | −0.7±1.3 | 0.9±0.4 | 0.058 | |
| ΔE* | 3.8±0.4 | 4.0±0.7 | 0.325 | |
| Iron drop | ||||
| ΔL* | −4.1±6.4 | −1.9±1.0 | - | |
| Δa* | 3.3±0.5 | 3.2±0.3 | 0.814 | |
| Δb* | 0.2±0.7 | 0.9±1.0 | 0.164 | |
| ΔE* | 5.9±5.8 | 4.0±0.5 | 0.614 | |
| Multivitamin syrup | ||||
| ΔL* | −1.6±0.5 | −1.7±0.4 | 0.974 | |
| Δa* | 3.1±0.7 | 2.6±0.6 | - | |
| Δb* | −0.2±1.2 | −0.3±0.8 | 0.849 | |
| ΔE* | 3.7±0.7 | 3.2±0.7 | 0.081 | |
| Distilled water | ||||
| ΔL* | −0.8±0.7 | −0.8±0.8 | - | |
| Δa* | 0.2±0.4 | −0.2±0.2 | - | |
| Δb* | −1.3±1.7 | −0.4±0.6 | - | |
| ΔE* | 2.0±1.4 | 1.1±0.7 | - |