Implants · single question
Osseointegration is what type of growth/process?
Show answer and explanation
Correct answer: A. Appositional growth
Appositional growth (A). Osseointegration — the direct structural and functional connection between living bone and the surface of a load-bearing implant (Brånemark's definition) — occurs through appositional bone growth. New bone is deposited directly onto the implant surface by osteoblasts (apposition), without a cartilage intermediate.
• Appositional growth: bone deposited layer by layer on existing surfaces — how bone grows in width and how osseointegration occurs.
• Interstitial growth: growth from within (occurs in cartilage, NOT bone).
• Osseointegration requires: adequate bone quality/quantity, implant surface characteristics, surgical technique (no overheating), adequate healing time (3-6 months), and appropriate loading.
• The titanium oxide layer on implants is biocompatible with direct bone apposition.
• Appositional growth: bone deposited layer by layer on existing surfaces — how bone grows in width and how osseointegration occurs.
• Interstitial growth: growth from within (occurs in cartilage, NOT bone).
• Osseointegration requires: adequate bone quality/quantity, implant surface characteristics, surgical technique (no overheating), adequate healing time (3-6 months), and appropriate loading.
• The titanium oxide layer on implants is biocompatible with direct bone apposition.