表 1.
Follow-up period/years | Lost follow-up implants | Failed implants | Premier implants | Final implants | Survival rate/% | Cumulative survival rate/% |
*312 implants survived to the end. | ||||||
0- | 0 | 0 | 332 | 332.0 | 100.0 | 100.0 |
1- | 2 | 1 | 332 | 329.5 | 99.7 | 99.7 |
2- | 3 | 2 | 329 | 325.0 | 99.4 | 99.1 |
3- | 3 | 3 | 324 | 319.5 | 99.1 | 98.1 |
4- | 3 | 3 | 318* | 313.5 | 99.0 | 97.2 |