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Bone Grafting & Augmentation Procedures

Oral Implantology • NEET MDS Study Guide • AI-Generated Notes

⭐ High-Yield Facts for Exam

  • Autograft = gold standard (osteogenic+inductive+conductive).
  • DFDBA (allograft) = osteoinductive.
  • Xenograft (Bio-Oss) = conductive scaffold.
  • Alloplast = synthetic (HA, β-TCP).
  • GBR = barrier membrane + graft.

Bone Grafting & Augmentation

Graft Types

  • Autograft — patient's own bone; the gold standard: osteogenic + osteoinductive + osteoconductive.
  • Allograft — same species (e.g., DFDBA — osteoinductive).
  • Xenograft — another species (e.g., Bio-Oss, bovine) — osteoconductive scaffold.
  • Alloplast — synthetic (hydroxyapatite, β-TCP, bioactive glass).

Guided Bone Regeneration (GBR)

A barrier membrane (resorbable or non-resorbable, sometimes titanium-reinforced) holds space and excludes soft tissue so bone can fill a defect — often with a graft.

Exam Tips ⭐

Autograft = gold standard (all three properties); DFDBA = osteoinductive; xenograft = conductive scaffold; GBR uses a membrane.

📝 Practice MCQs — Bone Grafting & Augmentation Procedures

Q1. The only graft that is osteogenic, osteoinductive AND osteoconductive is:
A. Allograft
B. Xenograft
C. Autograft
D. Alloplast
Show Answer
✅ Answer: C
Autograft possesses all three bone-forming properties.
Q2. Bio-Oss is an example of a(n):
A. Autograft
B. Allograft
C. Xenograft
D. Alloplast
Show Answer
✅ Answer: C
Bio-Oss is a bovine-derived xenograft.
Q3. GBR relies on a membrane to:
A. Speed soft tissue growth
B. Exclude soft tissue and maintain space for bone
C. Deliver antibiotics
D. Whiten bone
Show Answer
✅ Answer: B
The barrier membrane excludes soft tissue so bone can regenerate.
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Related Topics

Implant Systems & Surface ModificationsSinus Lift & Advanced ProceduresGTR, Bone Grafts, Growth Factors