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Saturday, June 24, 2000

Conservative and Endodontics MCQ Answer 19

Posted by Vishaal at 6/24/2000 11:44:00 AM Saturday, June 24, 2000
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Answer a.

Pathways of the Pulp 2002, Page 299


Dental gutta percha consists of the following ranges of materials:

Gutta Percha 19-22%, Zinc Oxide 56-75%, Heavy metal sulfates 2-17%, Waxes and Resins 1-4%.

Dental gutta percha comes in two forms, alpha phase, which is brittle, and beta phase, which is pliant. Alpha phase GP can be rejuvenated back to beta by heating under hot tap water at >55 degrees C, then immediately tempering vertically with cold (<20' C) water.

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