“…Thirteen case series were considered eligible for inclusion (Albrektsson et al, 1988;Eckert et al, 1996;Niimi et al, 1997;Andersson et al, 1998;Brogniez et al, 1998;Esser et al, 1999;Granstrom et al, 1999;Werkmeister et al, 1999;Goto et al, 2002;Visch et al, 2002;Landes and Kovacs, 2006;Schepers et al, 2006;Katsoulis et al, 2013), Articles included in the review (n = 15), but 14 -could be included into meta analyses Articles excluded on basis of title and abstract (n = 1,029) Excluded publications, not fulfilling inclusion criteria (n = 7): Alsaadi et al, (2008) included only two subjects of an overall sample of 700 patients Schliephake et al, (1999) did not report number of implants lost Weischer et al, (1996), Keller et al, (1997), Ihara et al, (1998), Meriscke-Sterm et al, (1999) and Linsen et al, (2012) as were 2 RCTs (Schoen et al, 2007;Heberer et al, 2011) (Tables 1-3). A total of 10,150 implants were assessed in the included studies, and of these, 1,689 (14.3%) were installed in irradiated jaws.…”