Table 6 Cumulative success rate of the implant-supported MZCs by means of the life-table analysis of Cutler and Ederer. An implant-supported MZC was defined as “successful” in the absence of any biologic and/or prosthetic complication, at the end of the different time intervals
Time interval (months) | Implant-supported crowns at the start of the interval | Drop-outs during the interval | Implant-supported crowns at risk | Failures during the interval | Survival rate within the period (%) | Cumulative survival rate (%) |
|---|---|---|---|---|---|---|
0–6 | 106 | 2 | 104 | 5 | 95.2% | 95.2% |
6–12 | 94 | 1 | 93 | 1 | 98.9% | 94.1% |
12–18 | 84 | 0 | 84 | 0 | 100% | 94.1% |
18–24 | 75 | 1 | 74 | 1 | 98.6% | 92.7% |
24–30 | 69 | 0 | 69 | 1 | 98.5% | 91.3% |
30–36 | 40 | 0 | 40 | 0 | 100% | 91.3% |