Table 2. Effects of different hygiene solutions on physical and mechanical properties of denture base acrylic.
| Physical and Mechanical Properties | Hygiene Solutions | Mean ± SD (Median) | 95% IC (Range) | p | Pairwise Comparisions | |
|---|---|---|---|---|---|---|
| Surface roughness - ΔRa (µm) | Control | 0.00±0.03 (0.00) | -0.02; 0.01 (-0.10; 0.02) |
|
||
| RC | 0.03±0.04 (0.02) | 0.01; 0.06 (-0.01; 0.16) | ||||
| SH | 0.02±0.03 (0.01) | 0.01; 0.03 (-0.01; 0.08) | ||||
| EPC | 0.01±0.02 (0.00) | 0.00; 0.02 (-0.02; 0.07) | ||||
| Surface roughness - Sa (µm) | WI | 0.327±0.065 (0.340) | 0.277; 0.376 (0.213; 0.432) |
|
||
| Control | 0.282±0.045 (0.269) | 0.248; 0.317 (0.229; 0.348) | ||||
| RC | 0.410±0.074 (0.401) | 0.353; 0.467 (0.329; 0.540) | ||||
| SH | 0.306±0.032 (0.306) | 0.281; 0.331 (0.253; 0.352) | ||||
| EPC | 0.339±0.073 (0.351) | 0.283; 0.395 (0.262; 0.498) | ||||
| Color (ΔE) | Control | 0.85±0.66 (0.66) | 0.54; 1.16 (0.34; 2.90) |
|
||
| RC | 1.37±0.84 (1.07) | 0.98; 1.76 (0.22; 3.94) | ||||
| SH | 0.52±0.21 (0.41) | 0.42; 0.61 (0.32; 0.94) | ||||
| EPC | 0.97±1.03 (0.61) | 0.48; 1.45 (0.19; 4.54) | ||||
| Microhardness (ΔHK) | Control | -0.28±1.69 (-0.05) | -1.07; 0.52 (-5.10; 2.10) |
|
||
| RC | 2.91±1.82 (2.85) | 2.06; 3.76 (-0.10; 6.60) | ||||
| SH | 0.16±0.82 (0.05) | -0.23; 0.54 (-1.20; 1.60) | ||||
| EPC | 0.54±1.58 (0.25) | -0.20; 1.28 (-1.50; 4.30) | ||||
| Flexural Strength (MPa) | WI | 96.15±8.53 (98.92) | 92.16; 100.14 (78.94; 106.84) |
|
||
| Control | 89.94±7.58 (90.08) | 86.39; 93.49 (72.52; 103.75) | ||||
| RC | 74.18±10.25 (74.39) | 69.39; 78.98 (56.21; 101.95) | ||||
| SH | 88.21±10.16 (86.50) | 83.45; 92.97 (67.79; 104.95) | ||||
| EPC | 99.73±9.12 (100.94) | 95.46; 103.99 (72.17; 114.58) | ||||
| Impact Strength (J/m) | WI | 165.10±7.59 (164.00) | 161.55; 168.65 (156.00; 183.00) |
|
||
| Control | 146.40±12.56 (147.50) | 140.52; 152.28 (128.00; 163.00) | ||||
| RC | 132.40 ± 11.68 (135.00) | 126.93; 137.87 (110.00; 150.00) | ||||
| SH | 141.15±7.10 (144.00) | 137.83; 144.47 (128.00; 153.00) | ||||
| EPC | 134.10±10.50 (140.00) | 129.18; 139.02 (113.00; 144.00) | ||||
| Sorption (g/cm3) | Control | 0.027±0.002 (0.028) | 0.026; 0.028 (0.022; 0.031) | 0.666** | ||
| RC | 0.026±0.073 (0.028) | -0.008; 0.060 (-0.201; 0.169) | ||||
| SH | 0.027±0.003 (0.028) | 0.025; 0.029 (0.019; 0.033) | ||||
| EPC | 0.028±0.002 (0.028) | 0.027; 0.029 (0.024; 0.033) | ||||
| Solubility (g/cm3) | Control | -0.005±0.016 (-0.001) | -0.012; 0.003 (-0.073; -0.001) |
|
||
| RC | -0.002±0.072 (-0.002) | -0.036; 0.032 (-0.147; 0.219) | ||||
| SH | 0.002±0.016 (-0.001) | -0.005; 0.010 (-0.002; 0.070) | ||||
| EPC | -0.001±0.000 (-0.001) | -0.001; -0.001 (-0.001; 0.000) | ||||
*ANOVA and Tukey pos-test; **Kruskal-Wallis test and Dunn pos-test. RC - Ricinus communis; SH - Sodium Hypochorite; EPC - Efferdent Power Clean.