Fig. 1From: Allogeneic versus autogenous shell technique augmentation procedures: a prospective-observational clinical trial comparing surgical time and complication ratesallogeneic shell technique for augmentation of the posterior mandible. a Preoperative site, b intraoperative site before augmentation, c placement of two allogeneic shells, d filling of the gap with a mixture of allogeneic and autogenous bone, e site after a healing time of four months, f placement of two dental implants, g relining with bovine bone, h coverage with a collagen membrane, i postoperative radiographBack to article page