# The largest component of gutta percha cones is:
a) Gutta percha
b) Zinc oxide
c) Resins and waxes
d) Coloring agents
The correct answer is B. Zinc oxide.
Composition of gutta percha cones:
(Constituent - Percentage of constituent - Function)
Gutta percha - 20% - Matrix
Zinc oxide - 66% - Filler
Heavy metal sulfates (Bismuth sulphates) - 11% - Radio opacifier
Waxes or resins - 3% - Plasticizer
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