Research Article

Color Stability and Surface Properties of PMMA/ZrO2 Nanocomposite Denture Base Material after Using Denture Cleanser

Table 2

Mean and SD values of color (ΔE), surface roughness (μm), and Hardness (VHN) of acrylic specimens immersed in different solutions at a given time and concentration.

Nano-ZrO2TimeWater (W)Corega (C)NaOCl (S)Renew (R) value
Mean (SE)Mean (SE)Mean (SE)Mean (SE)

Color
0%T11.51 (0.02)2.98 (0.03)a3.01 (0.05)a1.93 (0.04)0.001
0%T21.99 (0.05)4.19 (0.06)5.92 (0.09)3.83 (0.13)0.001
2.5%T11.69 (0.02)2.98 (0.04)3.05 (0.07)1.97 (0.02)0.001
2.5%T22.04 (0.05)4.96 (0.05)6.85 (0.12)2.99 (0.07)0.001
5%T11.45 (0.01)2.89 (0.08)3.01 (0.05)1.96 (0.05)0.001
5%T22.19 (0.03)4.99 (0.08)6.19 (0.09)3.19 (0.06)0.001

Roughness
0%T10.14 (0.01)0.19 (0.02)a0.24 (0.02)0.18 (0.01)a0.001
0%T20.14 (0.01)0.23 (0.01)0.36 (0.01)0.20 (0.02)0.001
2.5%T10.17 (0.02)0.23 (0.02)0.33 (0.02)0.21 (0.01)0.001
2.5%T20.19 (0.02)0.27 (0.02)a0.39 (0.02)0.26 (0.02)a0.001
5%T10.24 (0.02)0.27 (0.0)a0.34 (0.02)0.26 (0.01)a0.001
5%T20.25 (0.01)0.33 (0.02)0.39 (0.01)0.29 (0.02)0.001

Hardness
0%T131.05 (1.3)27.79 (1.4)a25.17 (1.1)28.84 (1.1)a0.001
0%T230.3 (1.3)25.68 (1.3)a,b24.16 (1.4)a27.29 (1.4)b0.001
2.5%T138.6 (1.8)a34.85 (1.2)b34.29 (1.3)b39.59 (1.1)a0.001
2.5%T239.07 (0.97)33.11 (0.84)31.54 (1.6)36.76 (1.1)0.001
5%T141.46 (1.5)a40.82 (1.4)a35.22 (1.2)38.80 (1.2)0.001
5%T241.13 (1.3)37.45 (1.5)a30.28 (1.3)36.07 (1.2)a0.001

indicates a significant difference at α = 0.05. ANOVA and post hoc tests were used for statistical analysis to find statistical significance within each concentration using different solutions; hence, a comparison was done horizontally. Groups with similar letters indicate no significant difference ().