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Implants · single question

What bone condition MOST interferes with implant osseointegration (in order of severity)?

  1. Osteopenia alone — LESS likely to cause failure
  2. Osteoporosis — reduced bone mass/density → impairs osseointegration
  3. Osteopetrosis (marble bone disease — overly dense) — paradoxically impairs healing too
  4. Both osteoporosis and osteopetrosis reduce osseointegration
  5. Osteopenia and osteoporosis equally reduce osseointegration
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Correct answer: B. Osteoporosis — reduced bone mass/density → impairs osseointegration

✓ B) Osteoporosis most significantly impairs osseointegration.
Bone conditions and implants: OSTEOPOROSIS (porous bone, severely reduced density) = highest risk for implant failure — decreased BIC (bone-implant contact), impaired primary stability, bisphosphonate use complicates further. OSTEOPENIA = milder density decrease — some increased risk but less severe than osteoporosis. OSTEOPETROSIS = extremely dense sclerotic bone — poor vascularity, difficult drilling, impaired healing despite density. If osteoporosis is not an option → choose osteopenia (still worse than osteopetrosis). These are frequently tested on INBDE.

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