Comparison of marginal and internal fit of interim crowns fabricated with different 3D printers and milling machine
| Group | Marginal Discrepancy | Internal Discrepancy | ||||
|---|---|---|---|---|---|---|
| AMD | MG | Chamfer | Axial | Angle | Occlusal | |
| Mean (SD) μm | ||||||
| Milling group | 104.4 (38.5) | 45.5 ab (15.8) | 54.9 ab (12.8) | 42.3 a (9.4) | 74.4 a (16.6) | 119 a (23.8) |
| Zenith U group | 99.9 (36.8) | 42.1 ab (17.2) | 47.9 a (13.9) | 75.6 b (20.8) | 72 a (28.8) | 68.5 b (18.7) |
| Zenith D group | 100.5 (34.2) | 28.3 a (7.5) | 45.9 a (15.8) | 92.3 b (25.4) | 46.9 b (18.3) | 46.2 b (17.7) |
| Megagen group | 111.3 (34) | 53.7 b (24.2) | 72.1 b (19.5) | 96.5 b (14.3) | 76 a (15.7) | 54.9 b (19.4) |
| P | 0.812* | 0.012* | 0.01* | < 0.001* | 0.01* | < 0.001* |
*, Determined significance by Kruskal-Wallis test;
