Match the Items with the Correct Description Below

Multiple Choice

Match the items with the correct description below.
-Percolation

A) Electrical current between two dissimilar metals
B) Discoloration due to oxidation of the metal's surface
C) Deterioration of the metal due to moisture and acid present in the oral
D) The rate at which heat flows through a material
E) Opening and closing of a gap between the restoration and the tooth surface