Study Study type Follow-up Sample size Number of implants Early complications Late complications All complications
Maxilla Mandible Patients
(%) 		Implants
(%) 		Years after restauration Patients
(%) 		Implants
(%) 		Patients
(%) 		Implants
(%)
Kwon et al. [18] Prospective > 3 months 19 Unknown - - - - - - -
Siebert et al. [19] Prospective 1 year 24 (12 control, 12 BP+osteop) 120 0 0 - 0 0 0 0
Jacobsen et al. [20] Retrospective 5 years 12 5 18 - - - - - - -
Shabestari et al. [21] Case series < 8 year 21 20 26 0 0 - 0 0 0 0
Lopez-Cedrum et al. [22] Retrospective.
Case series 		< 3 year 9 28 29 - - - - - - -
Goss et al. [23] Retrospective Unknown 7 19 (non-distinguished) - - - - - - -
Koka et al. [24] Retrospective Unknown 137 (55 BP and 82 non-BP) 121 (BP) and 166 (non-BP) Unknown Unknown - Unknown Unknown Unknown 1.81 (BP-)
0.83 (BP+)
Zahid et al. [25] Retrospective 26 months 300 (274BP- and 26 BP+) 661 (610 BP- and 51 BP+) 11.54% (BP+) 5.89% (BP+) - Unknown Unknown 11.54% (BP+) 2.9% (all)
5.89% (BP+)
Grant et al. [26] Retrospective Unknown 458 (343 non BP and 115 BP) 1450 (non BP) 468 (BP) 1.7% (2/115) 0.4% (2/468) - Unknown Unknown Unknown 0.4% (BP+)
Lazarovici et al. [27] Retrospective 11.4 145 Unknown Unknown - - - - - - -
Griffiths et al. [28] Prospective 18 months 10 14 (non-distinguished) 0 0 - 0 0 0 0
Martin et al. [29] Retrospective Unknown 589 (16 failed implants) 44 implants in 16 patients (26 failed) - - - - - - -
Bell et al. [30] Retrospective Unknown 42 100 (non-distinguished) 11.9% 5% - Unknown Unknown 11.9% 5%
Fugazzotto et al. [31] Retrospective 12 - 24 months 61 169 (non-distinguished) 0 0 - 0 0 0 0
Alsaadi et al. [32] Retrospective Unknown 2004 6946 (non-distinguished) 8.9% 3.6% - 0 0 8.9% 3.6%

BP = bisphosphonate.