BioMed Research International / 2019 / Article / Fig 25

Research Article

Clinical Classification of Bone Augmentation Procedure Failures in the Atrophic Anterior Maxillae: Esthetic Consequences and Treatment Options

Figure 25

(a-b) A resorbable membrane is placed, covered by a collagen sponge, in order to create a double-layered barrier protecting the bony area that required regeneration.