Fig. 4From: Guided bone regeneration in staged vertical and horizontal bone augmentation using platelet-rich fibrin associated with bone grafts: a retrospective clinical studyGBR procedure for vertical bone increase in the anterior maxillary region. a Tomographic section of the vertical defect in the upper right lateral incisor region. b Clinical view of the vertical defect in the anterior maxilla. Observe the alveolar defect after 2 months of removal of poorly positioned implants and the presence of particles from the previous bone graft. c d-PTFE-Ti membrane fixed in the palate and the graft mixture being placed in the region. d Membrane covering the graft and fixed in the vestibular. e CBCT image after 8.5 months. The vertical bone gain of 9.8 mm after comparing the baseline and final CBCT. f Clinical aspect of the regenerated region before the implant placementBack to article page