Table 1. Descriptive data of the included patients.
| Variable | All placed implants (n=1,031) | Early failures (n=35) | |
|---|---|---|---|
| Sex | |||
| Male | 624 (60.5) | 23 (65.7) | |
| Female | 407 (39.5) | 12 (34.3) | |
| Age (yr) | |||
| <40 | 74 (7.2) | 1 (2.9) | |
| 40–49 | 236 (22.9) | 7 (20.0) | |
| 50–59 | 401 (38.9) | 14 (40.0) | |
| 60–69 | 245 (23.8) | 12 (34.3) | |
| ≥70 | 75 (7.3) | 1 (2.9) | |
| Jaw | |||
| Maxilla | 528 (51.2) | 11 (31.4) | |
| Mandible | 503 (48.8) | 24 (68.6) | |
| Position | |||
| Anterior | 106 (10.3) | 3 (8.6) | |
| Posterior | 925 (89.7) | 32 (91.4) | |
| Surgeon | |||
| Faculty member | 640 (62.1) | 11 (31.4) | |
| Resident | 391 (37.9) | 24 (68.6) | |
| Protocol | |||
| 1-stage | 712 (69.1) | 21 (60.0) | |
| 2-stage | 319 (30.9) | 14 (40.0) | |
| Implant diameter (mm) | |||
| 3.5 | 45 (4.4) | 3 (8.6) | |
| 4.0 | 216 (21.0) | 7 (20.0) | |
| 4.5 | 281 (27.3) | 6 (17.1) | |
| 5.0 | 468 (45.4) | 17 (48.6) | |
| 6.0 | 21 (2.0) | 2 (5.7) | |
| Implant length (mm) | |||
| 7.0 | 157 (15.2) | 0 (0.0) | |
| 8.5 | 670 (65.0) | 25 (71.4) | |
| 10.0 | 187 (18.1) | 10 (28.6) | |
| 11.5 | 15 (1.5) | 0 (0.0) | |
| 13.0 | 2 (0.2) | 0 (0.0) | |
| SFE access approach | |||
| None | 809 (78.5) | 31 (88.6) | |
| Crestal | 37 (3.6) | 0 (0.0) | |
| Lateral | 185 (17.9) | 4 (11.4) | |
| Preoperative GBR | |||
| No | 940 (91.2) | 32 (91.4) | |
| Yes | 91 (8.8) | 3 (8.6) | |
| Simultaneous GBR | |||
| No | 717 (69.5) | 26 (74.3) | |
| Yes | 314 (30.5) | 9 (25.7) | |
Data and number (%) values.
GBR: guided bone regeneration, SFE: sinus-floor elevation.