Table 2. Multiple comparison test (Scheffe’s test) results to compare the tensile strength in various groups.
| 95% confidence level. | |||||
| Group (I) | Group (J) | The mean difference (I-J) | P value | The lower limit | The upper limit |
| acrylic resin | TiO2 0.5wt% | -2.56 | 0.81 | -10.29 | 5.18 |
| TiO2 1wt% | -19.94* | 0.00 | -27.68 | -12.21 | |
| TiO2 2wt% | -6.67 | 0.11 | -14.40 | 1.06 | |
| acrylic resin withTiO2=0.5wt% | acrylic resin | 2.56 | 0.81 | -5.18 | 10.29 |
| TiO2 1wt% | -17.38* | 0.00 | -25.12 | -9.66 | |
| TiO2 2wt% | -4.11 | 0.49 | -11.84 | 3.62 | |
| acrylic resin with TiO2=1wt% | acrylic resin | 19.94* | 0.00 | 12.21 | 27.68 |
| TiO2 0.5wt% | 17.38* | 0.00 | 9.66 | 25.12 | |
| TiO2 2wt% | 13.27* | 0.00 | 5.55 | 21.01 | |
| acrylic resin with TiO2=2wt% | acrylic resin | 6.67 | 0.11 | -1.06 | 14.40 |
| TiO2 0.5wt% | 4.11 | 0.49 | -3.62 | 11.84 | |
| TiO2 1wt% | -13.27* | 0.00 | -21.01 | -5.55 | |