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Horizontal bone augmentation by guided bone regeneration (GBR) in the anterior maxilla. (A) Horizontal bone defect after trauma to the upper jaw. (B) Placement of expanded polytetrafluoroethylene (e‐PTFE) barrier membrane after filling the defect with Bio‐Oss bone substitute. (C) Insertion of implant in the regenerated bone 7 months after the GBR procedure. (D, E) Photograph and radiograph show the final restoration after 1 yr in function (Courtesy of Drs hatano & dahlin).
