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International Journal of Implant Dentistry
Fig. 3 | International Journal of Implant Dentistry

Fig. 3

From: The allogeneic shell technique for alveolar ridge augmentation: a multicenter case series and experiences of more than 300 cases

Fig. 3

Alveolar ridge augmentation of the posterior maxilla. A Initial intraoperative situation with an extended alveolar defect of the posterior alveolar jaw. B Intraoperative situation after sinus floor elevation and fixation of two allogeneic cortical bone plates buccal and palatinal using four fixation screws. C Intraoperative situation after filling sinus floor with xenogeneic bone substitute, covering it with PTFE matrix and filling the alveolar crest with allogeneic spongious granules. D After 4 months, sufficient bone remodeling, screws removed, and implants inserted. E Overlining with xenogeneic granules for resorption protection and covered by collagen matrix. F X-ray demonstrating inserted implants

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