Table 6 Implant characteristics and survival
Variable | Category | Number of anterior implants | Relative frequency of anterior implants (%) | Survival (%) | |||||
|---|---|---|---|---|---|---|---|---|---|
1 y | 2 y | 5 y | 10 y | 15 y | 20 y | ||||
Implant length | ≤ 10 mm | 48 | 20.3 | 87.2 | 87.2 | 87.2 | 78.0 | 56.5 | 28.3 |
> 10 mm | 188 | 79.7 | 97.3 | 96.7 | 95 | 93.8 | 89.6 | 82.2 | |
Implant locus | 1 (central incisor) | 79 | 33.5 | 93.6 | 93.6 | 92.2 | 90.8 | 76.3 | 70.0 |
2 (lateral incisor) | 38 | 16.1 | 92.1 | 92.1 | 92.1 | 88.7 | 88.7 | 44.3 | |
3 (canine) | 100 | 42.4 | 97.0 | 95.9 | 93.8 | 89.4 | 82.0 | 63.5 | |
4 (first premolar) | 19 | 8.1 | 100 | 100 | 100 | 100 | 100 | 100 | |