Table 2.
Characteristics of implants and implant sites (N = 96) in the 4 treatment groups.
| Implant treatment group | |||||
| Characteristic | B-1 (n = 22) | B-2 (n = 28) | L-1 (n = 23) | L-2 (n = 23) | P |
| Position of implant, n (%) | .29§ | ||||
| Pre-molar | 5 (22.7) | 4 (13.8) | 5 (21.7) | 1 (4.3) | |
| Molar | 17 (77.3) | 24 (85.7) | 18 (78.3) | 22 (95.7) | |
| Implant length, n (%) | <.01§ | ||||
| 8.5 mm | 14 (63.4) | 3 (10.7) | 1 (4.3) | 0 (0.0) | |
| 10.0 mm | 7 (31.8) | 9 (32.1) | 8 (34.7) | 13 (56.5) | |
| 11.5 mm | 1 (4.5) | 16 (57.1) | 11 (47.8) | 9 (39.1) | |
| 13.0 mm | 0 (0.0) | 0 (0.0) | 3 (13.0) | 1 (4.3) | |
| Implant width, n (%) | .586§ | ||||
| 3.25 mm | 2 (9.1) | 2 (7.1) | 1 (4.3) | 0 (0) | |
| 4.00 mm | 3 (13.6) | 8 (28.6) | 8 (34.7) | 7 (30.4) | |
| 5.00 mm | 17 (77.3) | 18 (64.2) | 14 (60.1) | 16 (69.6) | |
| Measurements, Mean ± SD | |||||
| RBH, pre-treatment, mm | 2.78 ± 0.45∗∗ | 2.16 ± 0.73 | 2.27 ± 1.14 | 1.28 ± 0.77 | <.01† |
| Graft healing time, months | 7.59 ± 1.99 | 9.73 ± 2.11 | .069‡ | ||
| Bone height gain of 1st sinus lifting, mm | 5.43 ± 2.21 | 8.44 ± 2.72∗∗ | <.01‡ | ||
| Total bone height gain, mm | 8.31 ± 1.10∗∗ | 10.83 ± 1.59 | 11.55 ± 1.56 | 12.85 ± 2.01 | <.01† |