Research Article
Effect of Incisal Porcelain Veneering Thickness on the Fracture Resistance of CAD/CAM Zirconia All-Ceramic Anterior Crowns
Table 4
Comparison between the two studied groups according to the fracture resistance in each incisal veneering thickness and in both thicknesses.
| | Incisal veneering thickness | Fracture resistance | Group | t | | | Group I | Group II |
| | 1.5 mm | Minimum | 1339.0 | 1707.0 | 6.7 | 0.000 | | Maximum | 1535.0 | 2100.0 | | Mean | 1428.5 | 1940.5 | | SD | 72.2 | 153.7 |
| | 3.0 mm | Minimum | 1230.0 | 1562.6 | 10.0 | 0.000 | | Maximum | 1316.0 | 1770.0 | | Mean | 1278.2 | 1667.9 | | SD | 33.3 | 80.2 |
| | Total | Minimum | 1230.0 | 1562.6 | 7.0 | 0.000 | | Maximum | 1535.0 | 2100.0 | | Mean | 1353.4 | 1804.2 | | SD | 95.3 | 184.4 |
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t, independent samples t test; (significant). |
