Table 2 Mean and standard deviation for the color stability of the two studied universal shade composites
| Â | Ormocer-based composite | Methacrylate-based composite | ||
|---|---|---|---|---|
ΔE-baseline | ΔE-delayed | ΔE-baseline | ΔE-delayed | |
Saliva | 2.22 ± .63 | 6.21 ± 1.85# | 1.80 ± .52 | 4.43 ± 2.11# |
Tea | 2.14 ± .49 | 7.27 ± 2.73# | 2.28 ± 1.05 | 6.34 ± 1.60# |
Cola | 2.42 ± .75 | 9.13 ± 1.37#a | 2.28 ± .68 | 6.83 ± 1.71*#a |
- Data are expressed as the mean ± SD
- SD standard deviation; P Probability significance when < 0.05
- aSignificance between Saliva & Cola
- *Significance between ΔE-ormocer-based composite vs ΔE-methacrylate-based composite either at baseline or delayed time (Test used: unpaired student’s t-test)
- #Significance between ΔE-baseline versus ΔE-delayed either ormocer-based composite or methacrylate-based composite (Test used: paired student’s t-test)
