What causes air bubbles in a model?
A)Using a vibrator
B)Adding stone in small increments
C)Impression material that is too thick
D)Improper pouring of the impression

Question

Quizplus · Accepted Answer

Improper pouring of the impression is the most probable cause of air bubbles.Stone should be added in small increments,and a vibrator should be used to force the air to the surface.
The impression material used would not affect air bubbles in the cast.

What Causes Air Bubbles in a Model