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The vertical marginal gap for the casting, CAD/CAM milled, and 3-D laser sintered groups.
| Group | Mean (µm) | SD |
|---|---|---|
| Casting | 38.2 a | 6.2 |
| CAD/CAM milled | 51.5 b | 7.0 |
| 3-D laser sintered | 72.5 c | 12.4 |
a–c Different letters indicate that values are significantly different between groups (p < 0.05).
