Table 1 Baseline characteristics of implants according to groups
Group | ||||
|---|---|---|---|---|
Variable | Overall (n = 35) | 1-Stage (non-submerged) (n = 17) | 2-Stage (submerged) (n = 18) | p |
Age (year) | ||||
Mean ± SD | 59.63 ± 11.04 | 60.29 ± 12.32 | 59.00 ± 10.01 | .6312 |
Range | 35-78 | 38-78 | 35-71 | |
Gender | ||||
Male | 23 (65.7) | 10 (58.8) | 13 (72.2) | .4043 |
Female | 12 (34.3) | 7 (41.2) | 5 (27.8) | |
Location of implant placement | ||||
First premolar | 2 (5.7) | 1 (5.9) | 1 (5.6) | .1464 |
Second premolar | 11 (31.4) | 8 (47.1) | 3 (16.7) | |
First molar | 8 (22.9) | 4 (23.5) | 4 (22.2) | |
Second molar | 14 (40.0) | 4 (23.5) | 10 (55.6) | |
Length of fixture (mm) | ||||
Mean ± SD | 11.97 ± 0.12 | 11.94 ± 0.17 | 12.00 ± 0.00 | .5682 |
Range | 11.5-12 | 11.5-12 | 12-12 | |
11.5 | 2 (5.7) | 2 (11.8) | 0 (0.0) | .2294 |
12 | 33 (94.3) | 15 (88.2) | 18 (100.0) | |
Diameter of fixture (mm) | ||||
Mean ± SD | 4.75 ± 0.39 | 4.78 ± 0.50 | 4.71 ± 0.24 | .7822 |
Range | 4.3-6.0 | 4.3-6.0 | 4.3-5.2 | |
4.3 | 11 (31.4) | 7 (41.2) | 4 (22.2) | .0164 |
4.8 | 17 (48.6) | 4 (23.5) | 13 (72.2) | |
5.2 | 6 (17.1) | 5 (29.4) | 1 (5.6) | |
6.0 | 1 (2.9) | 1 (5.9) | 0 (0.0) | |
Residual bone height (mm) | ||||
Mean ± SD | 5.62 ± 1.68 | 6.06 ± 2.11 | 5.19 ± 1.02 | .1381 |
Range | 3.1-9.6 | 3.1-9.6 | 3.3-7.4 | |
Increased bone height (mm) | ||||
Mean ± SD | 8.87 ± 2.74 | 7.86 ± 3.04 | 9.77 ± 2.15 | .0401 |
Range | 3.00-15.30 | 3.00-14.90 | 6.20-15.30 | |