Group I. (the intervention group)
Patients were treated with immediate implant placement with a mixture of 50% Xenograft bone (Geistlich Bio-Oss®; Pharma AG, Bahnhofstrasse 40 CH -Wolhusen) and 50% autogenous bone placed in the jumping distance till the soft tissue level. The provisional restoration that was previously picked up is then screwed in place and hand-tightened. Note that autogenous bone was collected by low-speed drilling (300 rpm without coolant) from within the socket, and the bone graft material is incorporated into the tissue zone, acting as a scaffold to support the ridge contour profile and peri-implant soft tissues. (Fig. 
A bone mixture of 50% xenograft to 50% autogenous bone was used to graft the jumping gap in the study group