Mean initial and final bone resorption of implants according to different variables
| Variable | Group | Mean initial bone resorption (mm) | Mean final bone resorption (mm) |
|---|---|---|---|
| Overall mean | 1.01±1.13 | 1.80±1.99 | |
| Implant vertical angle | Group 1 (vertical angle <10°) (n=88) | 1.21±1.18 | 2.17±2.25 |
| Group 2 (vertical angle 10°-20°) (n=30) | 0.87±1.06 | 1.27±1.25 | |
| Group 3 (vertical angle >20°) (n=19) | 0.33±0.54 | 0.76±0.80 | |
| Implant stability | Primary stability ≥60 (n=89) | 0.96±0.90 | 1.75±2.18 |
| Primary stability <60 (n=12) | 1.67±1.84 | 2.63±2.13 | |
| Secondary stability ≥60 (n=93) | 1.01±1.03 | 2.06±2.18 | |
| Secondary stability <60 (n=5) | 1.77±1.65 | 3.48±1.90 | |
| Bone graft | Placed with bone graft (n=57) | 1.41±1.24 | 2.36±2.61 |
| Placed without bone graft (n=80) | 0.72±0.95 | 1.39±1.25 | |
| Simultaneous placement with bone graft (n=56) | 1.45±1.28 | 2.43±2.64 | |
| Delayed placement after bone graft (n=5) | 1.32±0.92 | 1.58±1.07 | |
| Implant diameter | 3.3 mm (n=8) | 2.65±1.32 | 3.22±1.32 |
| 3.75 mm (n=5) | 2.18±1.58 | 2.52±1.66 | |
| 4 mm (n=99) | 1.06±1.03 | 1.58±1.70 | |
| 5 mm (n=25) | 1.66±0.77 | 1.92±.294 | |
| Implant length | 10 mm (n=9) | 0.55±0.65 | 2.25±4.79 |
| 11.5 mm (n=62) | 1.01±1.10 | 1.72±1.55 | |
| 13 mm (n=59) | 1.07±1.23 | 1.84±1.82 | |
| 15 mm (n=7) | 0.84±1.07 | 1.08±1.26 | |
| Implants sharing FHP with tilted implants | Implants sharing same FHP with group 2 tilted implants (n=73) | 1.11±1.21 | 2.16±2.22 |
| Implants sharing same FHP with group 3 tilted implants (n=57) | 0.99±1.03 | 1.65±1.71 |