Table 1.
Absolute and relative failure loads for the different resection depths*
| Resection depth | In vitro failure load | Simulated failure load | In vitro vs simulation | |||
|---|---|---|---|---|---|---|
| Absolute (kN) | Relative (%) | Absolute (kN) | Relative (%) | Mean difference (kN) | p value | |
| Intact (control) | 10.4 ± 1.0 (9.4–11.4) | 100 | 9.4 ± 2.4 (6.7–11.8) | 100 | 0.4 ± 1.6 (−0.3 to 1.2) | 0.278 |
| 3 mm | 9.9 ± 1.0 (8.9–10.9) | 95 ± 2.9 (92–98) | 9.0 ± 1.4 (7.7–10.3) | 85 ± 10 (74.7–95.2) | 0.9 ± 1.5 (0.5–1.3) | 0.004 |
| 6 mm | 8.3 ± 1.0 (7.3–9.3) | 90 ± 3.9 (86–93) | 6.8 ± 1.8 (5.0–8.5) | 79 ± 5 (74.5–84.1) | 1.5 ± 0.8 (0.6–2.5) | 0.013 |
| 9 mm | 7.9 ± 1.4 (6.5–9.3) | 81 ± 6.7 (74–87) | 5.6 ± 1.7 (4.0–7.3) | 67 ± 8 (58.8–74.5) | 2.3 ± 0.7 (1.3–3.3) | 0.028 |
| p value 3 mm vs control | 0.007 | 0.009 | 0.023 | 0.010 | NA | NA |
| p value 6 mm vs control | 0.002 | 0.002 | 0.003 | <0.001 | NA | NA |
| p value 9 mm vs control | <0.001 | 0.010 | <0.001 | <0.001 | NA | NA |
* Values reported as mean ± SD (95% CI); NA = not applicable.