Table 3. Univariate comparison of flexural strength (MPa) values using three-way ANOVA .
| Tests for inter-subject effects | |||||
| Flexural strength (MPa) | Type III sum of squares | df | Mean square | F | Sig. |
| Intercept | 54981711.760 | 1 | 54981711.760 | 310.425 | 0.001 |
| Material | 95426.642 | 1 | 95426.642 | 23.781 | 0.768 |
| Sintering Temperature | 216660.471 | 3 | 72220.157 | 2.852 | 0.252 |
| Holding time | 147434.274 | 3 | 49144.758 | 2.006 | 0.339 |
| Material * sintering Temperature | 45377.276 | 3 | 15125.759 | 0.595 | 0.634 |
| Material * Sintering holding time | 42920.883 | 3 | 14306.961 | 0.563 | 0.653 |
| Temperature * holding time | 320903.100 | 9 | 35655.900 | 1.402 | 0.312 |
| Material * sintering temperature * holding time | 228969.290 | 9 | 25441.032 | 1.421 | 0.180 |