Question 304 · LDEK · Tooth discoloration and bleaching
Which of the following methods reduces the probability of resorption in the walking bleach technique?
- A. sodium perborate is not used.
- B. the bleaching agent should be removed after one day.
- C. immediately after bleaching, a paste of calcium hydroxide is placed in the pulp chamber.
- D. after the removal of the restoration from the pulp chamber and of 1-2 mm of the filling from the root canal, the gutta-percha of the root canal is sealed with amalgam.
- E. immediately before bleaching, a paste of calcium hydroxide is placed in the pulp chamber.
Hint
Think about what peroxide does to the pH at the cervical root surface and how that could be reversed.
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