Implants · single question

What is the minimum mesio-distal bone width required for implant placement between two natural teeth?

  1. 7mm
  2. 3.5mm
  3. 6mm
  4. 9mm
Show answer and explanation

Correct answer: A. 7mm

  • A. Correct. A minimum of 7mm of mesio-distal bone is required between two natural teeth for implant placement. This accommodates a standard implant (3.5–4mm diameter) with 1.5mm of bone on each side (minimum requirement).
  • B. 3.5mm is insufficient — this would not allow adequate bone walls around the implant.
  • C. 6mm does not meet the minimum requirement for bone walls around a standard implant.
  • D. 9mm exceeds the minimum — more space is better but this is not the minimum threshold.

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