Fig. 1From: Membrane fixation for osseous graft stabilization in periodontally accelerated osteogenic orthodontics: a comparative studya the dehiscence-a vertical root exposed defect where the denuded areas involve the alveolar bone margin (black arrow) and fenestration-a window of bone loss that places the exposed root surface directly in contact with the gingiva or alveolar mucosa (white arrow) on the labial surface of the mandible. b: the schematic diagram of dehiscence (black arrow) and fenestration (white arrow)Back to article page