TABLE 6.
Biological outcomes according to the implant placement and loading protocols (NA = not applicable; NR = not reported)
| Study | Placement and loading protocol | Type of loading | Mean ± SD follow‐up (months) | No. implants placed | No. implants available at follow‐up | Implant survival rate | Mean ± SD MBL changes at follow‐up (mm) | Mean ± SD on peri‐implant inflammation (different indexes) | Mean ± SD soft‐tissue recession at follow‐up (mm) | Mean ± SD width KT at follow‐up (mm) | Mean ± SD PI at follow‐up | Mean (SD) PD at follow‐up (mm) | No. of reported biological complications | Rate of biological complications (%) (except implant failure) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| An et al. (2019) | DPIL | Non‐functional | 36 | 68 | 68 | 100% | 0.42 ± 0.39 | 0.65 ± 0.81 (Gingival Index) | NR | NR | 0.35 ± 0.64 | 2.68 (1.00) | 0 | 0% |
| Daher et al. (2019) | DPIL | Functional | 36 | 80 | 69 | 95.5% | 0.78 ± 0.72 | NR | NR | NR | NR | NR | 0 | 0% |
| DPDL | NA | 36 | 80 | 71 | 96.3% | 0.91 ± 1.05 | NR | NR | NR | NR | NR | 2 implants with peri‐implantitis | 2.8% | |
| Degidi et al. (2011) | DPIL | Non‐functional | 36 | 48 | 48 | 100% | 0.57 ± 0.52 | NR | NR | NR | NR | NR | 0 | 0% |
| Fung et al. (2011) | DPIL | Functional | 36 | 42 | 40 | 95.2% | 0.26 ± 0.44 | 0.25 ± 0.30 (Sulcus Bleeding Index) | NR | NR | NR | 2.82 (0.75) | 0 | 0% |
| Göthberg et al. (2018) | DPIL | Functional | 60 | 78 | 62 | 94.9% | NR | NR | NR | NR | NR | 3.15 (0.87) | 3 implants with peri‐implantitis | 4.8% |
| DPDL | NA | 60 | 72 | 64 | 97.2% | NR | NR | NR | NR | NR | 3.18 (0.94) |
2 implants with peri‐implantitis 2 implants with fistula |
6.3% | |
| Oxby et al. (2015) | DPEL | NA | 55 | 107 | 107 | 100% | 0.28 ± 0.88 | NR | NR | NR | NR | NR | 1 implant with soft‐tissue recession | 0.9% |
| IPEL | NA | 55 | 67 | 67 | 100% | 0.34 ± 1.48 | NR | NR | NR | NR | NR | 1 implant with soft‐tissue recession | 1.5% | |
| Payer et al. (2010) | DPIL | Non‐functional | 96 | 40 | 18 | 95% | 0.88 ± 1.15 | NR | NR | NR | NR | NR | 1 implant with peri‐implantitis | 5.6% |
| Romanos et al. (2016) | DPIL | Functional | 145.7 ± 10.7 | 36 | 30 | 100% | 0.57 ± 1.06 | 0.07 ± 0.25 (Sulcus Bleeding Index) | 0.30 ± 0.84 | 1.73 ± 1.36 mm | 0.56 ± 0.94 | 2.53 (0.63) | 0 | 0% |
| DPDL | NA | 145.7 ± 10.7 | 36 | 30 | 100% | 1.12 ± 1.30 | 0.00 ± 0.00 (Sulcus Bleeding Index) | 0.20 ±0.48 | 2.00 ± 1.23 mm | 0.43 ± 0.63 | 2.6 (0.50) | 0 | 0% | |
| Si et al. (2016) | DPDL | NA | 66 | 21 | 19 | 90.5% | NR | NR | NR | NR | NR | NR | 2 implants with peri‐implantitis | 10.5% |
| Siebers et al. (2010) | DPIL | Both | 45.1 ± 7.2 | 33 | 32 | 97% | 2.15 ± 0.81 | 1.59 ± 1.39 (from 0 to 6) | NR | NR | NR | NR | NR | ‐ |
| DPDL | NA | 55.7 ± 16.2 | 46 | 46 | 100% | 2.46 ± 0.96 | 2.91 ± 2.11 (from 0 to 6) | NR | NR | NR | NR | NR | ‐ | |
| IPIL | Both | 47.64 ± 6.48 | 20 | 17 | 90% | 1.57 ± 0.91 | 1.76 ± 1.79 (from 0 to 6) | NR | NR | NR | NR | NR | ‐ | |
| Simons et al. (2015) | DPDL | NA | 48 | 151 | 151 | 98.3% | 0.5 ± 0.68 | NR | NR | NR | NR | NR | NR | ‐ |
| Spies et al. (2015) | DPIL | Non‐functional | 60 | 26 | 26 | 100% | 1.14 ± NR | 1.1 ± NA (modified Bleeding Index) | NR | NR | 0.72 ± NR | NR | 0 | 0 |
| Van Nimwegen et al. (2015) | DPDL | NA | 60 | 70 | 58 | 97.1% | NR | 40 ± NR (Bleeding Index) | NR | NR | NR | 3.33 (1.73) | 2 implants with peri‐implantitis | 3.4% |
| Vogl et al. (2019) | DPIL | Functional | 36 | 19 | 17 | 100% | 0.37 ± 0.46 | NR | NR | NR | 1.6 ± 0.7 | NR | 0 | 0% |
| DPIL | Non‐functional | 36 | 32 | 30 | 97% | 0.39 ± 0.47 | NR | NR | NR | 1.6 ± 0.7 | NR | 0 | 0% |