A total of 15 (n=5 per group) bone level implants (Figure 1a) with diameters of 4.7 mm at the shoulder and 3.7 mm at the apex and a length of 16 mm (SCI-BioActive; AlfaGate; KfarQara, Israel) were placed in bone surrogate materials (Figure 1b) differing in density (Solid rigid polyurethane foam, 10 pound per cubic foot (pcf), 20 pcf,