Xenograft Properties — NDEB AFK MCQ
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Correct answer: B — Xenograft (e.g., Bio-Oss, bovine-derived hydroxyapatite)
Xenografts (e.g., Bio-Oss — deproteinised bovine bone mineral) provide only an osteoconductive scaffold — a three-dimensional framework that supports ingrowth of blood vessels and osteoblasts from the surrounding host bone. They lack osteogenic cells and osteoinductive growth factors. DFDBA has some osteoinductive capacity (residual BMPs). Autogenous bone is the only graft with all three properties. Xenografts resorb very slowly and maintain volume long-term, which is advantageous for ridge preservation.
Reference: Hupp – Contemporary Oral and Maxillofacial Surgery, 7th ed., 2019