3185MedicalMedium
In a metal ceramic crown for a FPD the function of tin, indium which are readily oxidized minor constituents is to________?
ADecrease porosity
BImproves the thermal expansion between the metal and porcelain
CThey react with the porcelain opaque layer, which masks the metal
DImprove bonding
Correct answer
D. Improve bonding
Explanation
The correct answer is Improve bonding.