Fig. 2From: Reconstruction of vertical alveolar ridge deficiencies utilizing a high-density polytetrafluoroethylene membrane /clinical impact of flap dehiscence on treatment outcomes: case series/Split-thickness flap elevation. A Buccal mucosal layer preparation in a lower lateral region. B Buccal mucosal layer preparation in an upper anterior region. C Buccal periosteal layer and lingual full thickness flap preparation. D Buccal periosteal layer and palatal full thickness flap preparationBack to article page