Objectives: The aim of the study was to follow the fate of Autologous bone blocks grafted in juxtaposition to Allogeneic bone blocks in the reconstruction of atrophied premaxillary region in humans. Patients and Methods: Eight adult patients suffering from deficient premaxilla were included in this study. Bone augmentation was performed using Autogenous symphysial bone and Irradiated allogenic bone. Pre and Postoperative CBCT scans were used for bone volume measurements. Micro-CT scans were used for bone cores obtained from proposed implant sites, as well as histologic examination. Results: Irradiated allogeneic bone blocks grafting compared favorably to the autologous bone in all aspects. Coclusion: The technique of irradiated allogenic bone blocks can be used successfully in cases exhibiting minimal alveolar ridge defects requiring bone gain.