4725MedicalMedium
Air bubbles formed on the surface of casting is probably due to________?
AImproper casting pressure
BImproper angulation of sprue
CImproper heating of the investment
DImproper wetting of the wax pattern by the investment
Correct answer
D. Improper wetting of the wax pattern by the investment
Explanation
The correct answer is Improper wetting of the wax pattern by the investment.