TABLE 4.
Summary of annual failure rates, relative failure rates, and survival estimates for SCs with implant‐supported monolithic zirconia crowns as reference
| Type of SCs | Total number of SCs | Total SCs exposure time | Mean SCs follow‐up time | Estimated annual failure rate* (95% CI) | 3‐year survival summary estimate* (95% CI) | Relative failure rate** (95% CI) | p‐value** |
|---|---|---|---|---|---|---|---|
| Monolithic zirconia SCs | 394 | 611 | 1.6 | 1.31% (0.76%−2.27%) | 96.1% (93.4%−97.8%) | 1.00 (Ref.) | |
| Monolithic‐reinforced glass‐ceramic SCs | 452 | 1174 | 2.6 | 1.02% (0.51%−2.05%) | 97.0% (94.0%−98.5%) | 0.78 (0.33–1.83) | p = 0.568 |
| Veneered zirconia SCs | 952 | 3633 | 3.8 | 1.27% (0.77%−2.1%) | 96.3% (93.9%−97.7%) | 0.97 (0.47–1.98) | p = 0.927 |
| Veneered‐reinforced glass‐ceramic SCs | 93 | 754 | 8.1 | 0.80% (0.14%−4.64%) | 97.6% (87.0%−99.6%) | 0.61 (0.12–3.09) | p = 0.548 |
| Veneered densely sintered alumina SCs | 128 | 474 | 3.7 | 1.05% 0.49%−02.29%) | 96.9% (93.4%−98.6%) | 0.81 (0.34–1.89) | p = 0.619 |
| Resin Nano Ceramic SCs | 75 | 133 | 1.8 | 33.8% (4.36%−261.6%) | 36.3% (0.04%−87.7%) | 25.8 (5.48–121.56) | p < 0.0001 |
C.I. stands for “confidence interval.”
*
Based on robust Poisson regression.
**
Based on multivariable robust Poisson regression including all types of SCs.