Multiple choice

Sterilization of Gutta percha points is done by:

  1. hot salt sterilizer

  2. autoclaving

  3. chemical solutions

  4. dry heat
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

GP becomes soft at temperature above 64oC. Option a, b and d use heat for sterilization. GP can not be heat sterilized, hence it is submerged in 5% solution of NaOCI for one minute.  Then, it should be rinsed with ethyl alcohol to remove crystalline NaOCI before obturation. Otherwise, this will interfere with the seal of obturation.

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