Today, lot many of the books are available on implants; its placement; anatomical considerations ; various concepts of implantology; ridge augmentation; but none of the books is available in which precise knowledge is given regarding the atrophic ridges and alveolar ridge deficiencies, where reconstruction of the defect is required before or concurrent with implant placement. So, keeping that in mind, we planned to write this book wherein precise knowledge required regarding ridge deficiencies, anatomical considerations and augmentation technique indicated in a particular situation to restore adequate bone volume and to allow ideal implant placement from an aesthetic and functional point of view has been discussed precisely. In this book, various topics have been picked up individually and then discussed in detail. Biological and Surgical anatomical considerations, Radio graphic considerations and Surgical guides, Structure of compromised alveolar ridges and limitations, Management and surgical perspectives for compromised sites, Distraction Osteogenesis, Implants in Geriatric patients, Implants in irradiated bone, Lasers in oral implantology & various complications.