Bone Graft Materials Overview

Bone graft materials in dentistry are used to regenerate or augment bone in the jaw to support dental implant placement. They work through three mechanisms: osteogenesis (new bone formation from living cells), osteoinduction (stimulation of stem cells to form bone), and osteoconduction (providing a scaffold for bone growth). Different materials offer different combinations of these properties. The four categories of bone graft materials are autografts (patient's own bone — the gold standard), allografts (human donor bone), xenografts (animal-derived bone, typically bovine), and alloplastic materials (synthetic bone substitutes). Each has distinct advantages and limitations regarding biological potential, availability, morbidity, and cost. The ideal bone graft material is biocompatible, resorbable, replaced by native bone, and provides structural support during healing. Growth factors such as platelet-rich plasma (PRP), platelet-rich fibrin (PRF), and bone morphogenetic proteins (BMPs) can be added to enhance the biological response. Material selection depends on the defect size, location, patient factors, and the planned restorative outcome.