The presence of a thin ridge presents a clinical challenge for proper positioning of endosseous dental implants. When the bone width is compromised, augmentation becomes necessary to increase the bone volume as this will enable placement of an implant as a fixed prosthesis. When the labio-palatal bone width is 3mm or greater but less than 6mm, to allow implant placement, augmentation of the alveolar bone using a ridge expansion technique is a viable option. Ridge splitting technique with simultaneous immediate implant placement is a minimally invasive technique for horizontal augmentation of maxillary narrow alveolar ridges. Nano-hydroxyapatite bone graft material provides as a good synthetic material for ridge augmentation with minimal post-operative complication. CBCT is an effective technical tool measurement to measure accurately the horizontal and vertical dimensions of the ridge. Thirty healthy patients with insufficient ridge width in edentulous anterior maxilla and in need for ridge splitting with immediate implant placement to facilitate rehabilitation of anterior missing teeth were randomly selected from the out-patient clinic of Sayed Galal University hospital and the specialized dental teaching hospital. The age of selected patients range of (20-40) years to analyze the effect of nano- hydroxyapatite with immediate implant placement and ridge splitting technique. All patients were followed up clinically and radiogarphically using CBCT at intervals of 1, 6 and 12 months.