Periodontics · single question

GTR (Guided Tissue Regeneration) is BEST for what type of periodontal defect?

  1. Generalized horizontal bone loss
  2. Class II furcation involvements and 2–3 walled infrabony defects
  3. 1-walled defects only
  4. Gingival recession (use connective tissue graft instead)
  5. Class III furcation (complete through-and-through)
Show answer and explanation

Correct answer: B. Class II furcation involvements and 2–3 walled infrabony defects

✓ B) Class II furcation and 2–3 walled vertical defects — same as Q64. Key review.
GTR best candidates (review): 2–3 wall infrabony defects, Class II mandibular furcation. Why: more bone walls → better clot stabilization, PDL cell containment, blood supply. Enamel matrix derivative (Emdogain) is an adjunct for regeneration. Combined bone graft + membrane (barrier) provides best regenerative outcomes. Class III furcation → usually extraction or long-term monitoring. Horizontal bone loss (suprabony) → resective surgery or non-surgical treatment. GTR is a specific regenerative procedure requiring: patient compliance, non-smoking, controlled disease.

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