MCQ 1: The Largest Component of Gutta Percha Cones is:

# The Largest Component of Gutta Percha Cones is:
A. Gutta Percha
B. Zinc Oxide
C. Resins and Waxes
D. Coloring Agents



Answer:  B. Zinc Oxide

Reference: Grossman's Endodontic Practice, 13th Edition, Page : 346

Friedman's Composition of  Gutta Percha Cones
- 20% gutta percha (matrix)
- 66% zinc oxide (filler)
- 11% heavy metal sulfates (radiopacifier)
- 3% waxes or resins (plasticizer)

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