TABLE 12.
Overview of biological and technical complications of different types of implant‐supported SCs
| Complications Failures | Number of abutments or SCs | Estimated annual failure/complication rates (95% CI) | Number of abutments or SCs | Estimated annual failure/complication rates (95% CI) | Number of abutments or SCs | Estimated annual failure/complication rates (95% CI) | Number of abutments or SCs | Estimated annual failure/complication rates (95% CI) | Number of abutments or SCs | Estimated annual failure/complication rates (95% CI) | Number of abutments or SCs | Estimated annual failure/complication rates (95% CI) | Number of abutments or SCs | Estimated annual failure/complication rates (95% CI) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Overall results Estimated annual failure rate* (95% CI) |
Monolithic zirconia SCs Estimated annual failure rate* (95% CI) |
Monolithic‐reinforced glass‐ceramic SCs Estimated annual failure rate* (95% CI) |
Veneered zirconia SCs Estimated annual failure rate* (95% CI) |
Veneered‐reinforced glass‐ceramic SCs Estimated annual failure rate* (95% CI) |
Veneered densely sintered alumina SCs Estimated annual failure rate* (95% CI) |
Resin‐matrix ceramic SCs Estimated annual failure rate* (95% CI) |
||||||||
| Overall complication rate | 888 | 4.21* (2.65–6.60) | 55 | 3.57* (0.43–26.55) | 348 | 1.70* (0.83–3.48) | 317 | 4.52* (2.63–7.71) | 71 | 2.61* (0.93–7.17) | 22 | 14.1* (5.0–27.3) | 75 | 15.54* (12.6–19.1) |
| Overall failures due to ceramic fractures | 1783 | 0.75* (0.43–1.28) | 194 | 0.41* (0.05–3.51) | 449 | 0.60* (0.19–1.87) | 892 | 0.77* (0.39–1.53) | 110 | 0.12* (0.01–1.37) | 63 | 0* (0–5.60) | 75 | 6.08* (5.97–6.19) |
| Failure due to core fractures | 1674 | 0.32* (0.13–0.79) | 152 | 0* (0–11.2) | 474 | 0.25* (0.03–1.79) | 800 | 0.17* (0.06–0.53) | 110 | 0* (0–4.0) | 63 | 0* (0–5.60) | 75 | 5.90* (5.80–6.01) |
| Failure due to abutment fractures | 1941 | 0.23* (0.10–0.50) | 346 | 0.39* (0.13–1.16) | 423 | 0* (0–5.96) | 924 | 0.23* (0.07–0.76) | 110 | 0.50* (0.12–2.00) | 63 | 0* (0–5.60) | 75 | 0* (0–5.25) |
| Ceramic chippings | 1725 | 1.25* (0.69–2.26) | 346 | 0.39* (0.07–1.98) | 373 | 0.40* (0.10–1.54) | 743 | 1.82* (0.93–3.57) | 110 | 1.00* (0.66–1.50) | 128 | 0.64* (0.28–1.48) | 25 | 0* (0–3.6) |
| Screw loosening | 1153 | 0.44* (0.23–0.82) | 88 | 2.25* (0.80–6.22) | 413 | 0.10* (0.01–0.73) | 473 | 0.53* (0.20–1.42) | 51 | 0.45* (0.21–1.00) | 128 | 0.42* (0.13–1.36) | 0 | n.a. |
| Loss of retention | 829 | 1.97* (0.49–7.87) | 54 | 4.44* (1.40–13.63) | 195 | 0.25* (0.06–1.07) | 443 | 0.20* (0.08–0.54) | 40 | 0* (0–3.8) | 22 | 0* (0–10) | 75 | 28.19* (4.95–88.47) |
| Soft tissue complications | 822 | 2.58* (1.43–4.65) | 25 | 3.9* (0.1–18.4) | 192 | 1.1* (0.4–2.9) | 513 | 2.73* (1.25–5.89) | 42 | 1.57* (0.64–3.86) | 24 | 11.8* (2.6–27.6) | 25 | 6.9* (2.9–13.2) |
| Bone loss >2 mm | 614 | 0.52* (0.28–0.98) | 100 | 1.00* (0.16–5.89) | 117 | 0.52* (0.08–3.26) | 350 | 0.31* (0.10–0.94) | 22 | 0.8* (0.1–2.7) | 0 | n.r. | 25 | 2.0* (0.2–6.9) |
n.a. stands for "not available"; n.r. stands for "not reported"; C.I. stands for “confidence interval.”
*
Based on robust Poisson regression.