Table 2. Intaglio trueness (µm, root-mean-square estimates, mean ± standard deviation) of four zirconia crown groups measured in four different areas of inspection.
| Area | Groups | P | |||
|---|---|---|---|---|---|
| AM-DLP-3YZ | AM-SLA-3YZ | SM-4YZ | SM-5YZ | ||
| Inner surface (total) | 32.57 ± 1.30 | 34.81 ± 1.80 | 30.76 ± 9.11 | 29.76 ± 3.63 | > .05 |
| Occlusal | 19.46 ± 3.33 | 27.05 ± 2.49 | 23.87 ± 4.75 | 21.59 ± 3.12 | < .05 |
| Margin | 54.20 ± 5.18 | 62.39 ± 3.08 | 30.91 ± 6.09 | 34.80 ± 8.85 | < .05 |
| Axial | 25.11 ± 3.90 | 21.51 ± 4.19 | 35.41 ± 14.78 | 32.07 ± 7.46 | < .05 |
AM: additive manufacturing; DLP: digital light processing; SM: subtractive manufacturing; SLA: stereolithography; 3YZ: 3 mol% yttria-stabilized tetragonal zirconia; 4YZ: 4 mol% yttria-stabilized partially sintered zirconia; 5YZ: 5 mol% yttria-stabilized partially sintered zirconia. P: statistically significance level.