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Prosthodontics & Occlusion · single question

In the same case (32yo female, repeated crown failure, deep bite), which procedure is NOT needed?

  1. Occlusal analysis
  2. New crown with appropriate retention form
  3. Free gingival graft
  4. Crown lengthening if there is inadequate retention
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Correct answer: C. Free gingival graft

  • A. Occlusal analysis is essential to diagnose the cause of crown failure.
  • B. A new well-retained crown with proper design is ultimately needed.
  • C. Correct. A free gingival graft is NOT needed. This procedure adds keratinized tissue at the mucogingival junction — it has no role in treating a repeatedly failing crown from deep-bite occlusal forces. The problem is biomechanical, not a soft tissue deficiency.
  • D. Crown lengthening may be needed if inadequate tooth structure is contributing to poor retention.

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