Bone augmentation (grafting) may be required when there is not enough bone volume or density to securely anchor a dental implant, which is common following long-standing tooth loss, advanced gum disease, prior infection or trauma. Grafting can sometimes be performed at the same appointment as the extraction (a technique known as socket preservation), at a separate appointment several months before the implant is placed, or in appropriately selected cases alongside the implant itself. The graft material may be autogenous (your own bone), allograft, or a synthetic substitute, selected based on your case. CBCT (cone-beam CT) imaging is used at consultation to plan this accurately and confirm whether grafting is required.