Study Follow-up
(months) 		Patients Implants Method Primary implant stability P-value Secondary implant stability P-value Implant system
N N CBCT Mean (SD) Mean (SD)
Feng et al. [35] 3 22 65 CBCT 73.34 (SD 7.39) 0.006 80.32 (SD 4.58) 0.351 Straumann® Bone Level Implant System
(Straumann AG; Basel, Switzerland)
de Elío Oliveros [36] Direct 48 160 CBCT NR 0.001 NR NR BEGO Implant
(GmbH & Co. KG; Bremen, Germany)
Daher et al. [37] 3 to 3.5, 12 18 120 OPG, CBCT 62.6 (SD 7.7) < 0.001 68.6 (SD 4.2) < 0.001 NobelActive®
(Nobel Biocare AB; Gothenburg, Sweden)
Ivanova et al. [38] 4 90 90 CBCT Narrow implant: 67.75 < 0.001 Narrow implants: 73.83 < 0.001 AB Dental Implants
(AB Dental Devices Ltd; Ashdod, Israel)
Strandard impalnt: 66.78
Standard implants: 75.25
Wide implants:
74.93
Wide implants: 71.21
Vallecillo et al. [39] 2, 3 31 60 RFA Native bone:
75.4 (SD 12.8) 		0.011 Native bone:
75.33 (SD 6.82) 		< 0.001 Zimmer TSV
(Zimmer Biomet Dental; Palm Beach Gardens, Florida, USA)
Regenerative bone:
67.17 (SD 11.47) 		Regenerative bone:
66.1 (SD 9.93)
Cassetta et al. [40] 2, 6, 12 142 268 Osstell™ device
(Osstell AB; Gothenburg, Sweden) 		Group A (T0): 75.04 < 0.001 Group A (T1): 78.53;
Group B (T1):
76.14 		0.059 DIO Implant
(DIO Corporation; Busan, South Korea)
Group A (T2): 81.66;
Group B (T2):
80.1
Group B (T0): 72.59
Group A (T3): 80.86;
Group B (T3):
80.75

N = number; NR = not reported; SD = standard deviation.