Fig. 1
From: Minimal invasive horizontal ridge augmentation using subperiosteal tunneling technique

Intraoral photographs of minimal invasive horizontal ridge augmentation using a subperiosteal tunneling technique. a Deficient alveolar ridge. b Small vertical incision in the buccal side. c Preparation of subperiosteal cavity. d Bone graft material insertion into the tunnel. e After the placement of bone graft material. f Closure of the tunnel