Table 3. Means and Std. deviations for the change in delta E per interval for each material.
E.max: IPS e.max CAD®; VS: Vita Suprinity®; PRT: Prettau® 2 Dispersive®; PRTA: Prettau® 4 Anterior® Multi®; ΔE, Color change (ΔE1: Baseline-10,000 cycles; ΔE2: Baseline-30,000 cycles; ΔE3: Baseline-50,000 cycles). ** Differences significant at p<0.05.
| Material | Paired Differences | Sig. | ||
| Mean | Std. Deviation | |||
| E.max | ΔE1 - ΔE2 | -.351 | .592 | .001** |
| ΔE2 - ΔE3 | -.040 | .167 | .160 | |
| ΔE1 - ΔE3 | -.391 | .654 | .001** | |
| VS | ΔE1 - ΔE2 | -.034 | .318 | .519 |
| ΔE2 - ΔE3 | -.063 | .335 | .268 | |
| ΔE1 - ΔE3 | -.094 | .163 | .002** | |
| PRT | ΔE1 - ΔE2 | -2.322 | 1.687 | .000** |
| ΔE2 - ΔE3 | -.078 | .180 | .013** | |
| ΔE1 - ΔE3 | -2.400 | 1.741 | .000** | |
| PRTA | ΔE1 - ΔE2 | -.696 | .865 | .000** |
| ΔE2 - ΔE3 | -.180 | .407 | .012** | |
| ΔE1 - ΔE3 | -.877 | .939 | .000** | |