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Prosthodontics & Occlusion · single question

What is the next step when an allergic reaction to the metal RPD framework is confirmed?

  1. Cover the metal with acrylic
  2. Ask the laboratory which metal was used and fabricate a new RPD with a hypoallergenic material
  3. Switch to a removable complete denture
  4. Prescribe antihistamines and continue using the RPD
Show answer and explanation

Correct answer: B. Ask the laboratory which metal was used and fabricate a new RPD with a hypoallergenic material

  • A. Incorrect. Covering with acrylic may not provide complete isolation and is not a reliable long-term solution.
  • B. Correct. The appropriate management for confirmed metal allergy to the RPD framework is to: (1) identify the SPECIFIC METAL that was used (lab consultation), and (2) REMAKE THE RPD with a HYPOALLERGENIC MATERIAL (e.g., titanium, high-gold alloy, or cobalt-chromium with reduced nickel if nickel is the allergen).
  • C. Incorrect. Switching to a complete denture removes the missing-tooth problem from consideration but is not a proportionate response to a metal allergy — a new framework with appropriate metal is the proper solution.
  • D. Incorrect. Antihistamines treat the symptoms but do not address the cause — the patient continues to be exposed to the allergen.

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