DISCUSSION.
The maxillofacial treatment of advanced crest atrophy with twostage surgery is an invasive procedure. During the healing period, removable temporaries are recommended. Therefore, a rather long period is necessary to support the edentulous arch with a fixed esthetic restoration on the implants. One surgery is necessary with the concept of oral implantology presented here. Without bone grafting and mandibular nerve repositioning, it is less invasive. Also, immediate implantation has favorable results.
The procedure is a low trauma surgery. By application of immediate functional loading on the disk design implants 7 to 8 days after implantation, both arches are already equipped with fixed esthetic temporaries. With a correct implant technique to achieve tricortical or multicortical support, this procedure is safe, less invasive, and decreases chairtime. The advantages of disk design implants are based on several significant facts: 1) the loading transmission interface is mainly around the basal disks; 2) initial stability is achieved by anchoring the disks in the cortical bone; and 3) the density of laminar bone and the residual bone height are not as important as with root-form implants.
Implant success with >5 mm of available alveolar bone height is possible. The thickness of the disks is 0.5 mm. Therefore, the placement of Diskimplants allows for primary bone healing in the area around the disks (principle of fracture healing). The posterior zones of the mandible are not rigid bone structures in movement but are flexible. Diskimplants are not rigid either. The flexibility of this implant form (especially Monodiskimplants with a long shaft) adjusts physiologically to the functional demands on the mandible.

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