Table.
Failure Stress (σf), Critical Flaw Size (c), Semi-minor (a) and Semi-major (2b) Axes of the Specimens, and Residual Stress (σR)
| Sample ID | a (μm) | 2b (μm) | c (μm) | Failure Stress (MPa) | Crack Initiation Site | Material |
|---|---|---|---|---|---|---|
| 1 | 376 | 1129 | 460 | 116 | Connector (gingival surface) | Experimental core ceramic |
| 2 | 94 | 1223 | 240 | 161 | Posterior abutment margin | Experimental core ceramic |
| 3 | 361 | 918 | 407 | 124 | Connector (occlusal surface) | Experimental core ceramic |
| 4 | 282 | 941 | 364 | 131 | Connector (occlusal surface) | Experimental core ceramic |
| 5 | 188 | 706 | 258 | 156 | Connector (occlusal surface) | Experimental core ceramic |
| 6 | 283 | 1367 | 440 | 27+22 (σR) | Connector (occlusal surface) | Experimental core ceramic/glass veneer |
| 7 | 376 | 1543 | 539 | 107 | Connector (occlusal surface) | Experimental core ceramic |
| 8 | 229 | 829 | 308 | 32+22 (σR) | Connector (occlusal surface) | Experimental core ceramic/glass veneer |
| 9 | 791 | 2232 | 939 | 19+22 (σR) | Veneer chipping | Experimental core ceramic/glass veneer |
| 10 | 283 | 1367 | 440 | 68+22 (σR) | Veneer chipping | Experimental core ceramic/glass veneer |