Question 152 · LDEK · Tooth discoloration and bleaching

Which will be the most effective agent in bleaching patient’s teeth discolored grey because of tetracycline intake during childhood?

  1. A. 2% hydrogen peroxide.
  2. B. 1% sodium perborate.
  3. C. 15% carbamide peroxide.
  4. D. 11% silicon carbide.
  5. E. 5% urea peroxide.
Hint

Choose the agent that is a true peroxide bleach at a concentration suitable for prolonged tray use at home.

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