Start practicing

Periodontics · single question

Guided tissue regeneration (GTR) is most predictable for which type of periodontal defect?

  1. Narrow intrabony (vertical) defects, especially 3-wall defects
  2. Horizontal bone loss
  3. Suprabony pockets
  4. Class III (through-and-through) furcation involvement
Show answer and explanation

Correct answer: A. Narrow intrabony (vertical) defects, especially 3-wall defects

  • A. Correct. GTR works best in contained vertical/intrabony defects (and Class II furcations) where a barrier membrane can protect a space for PDL-derived regeneration.
  • B. Incorrect. Horizontal bone loss lacks the contained space needed for predictable regeneration.
  • C. Incorrect. Suprabony pockets have no intrabony component to regenerate.
  • D. Incorrect. Class III furcations have a poor, unpredictable regenerative prognosis.

Practice Periodontics questions Periodontics study notes

More Periodontics practice questions