Air bubbles in a stone cast are caused by:
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

Air bubbles in a stone cast are typically caused by improper pouring of the impression. This can occur if the impression material is not set properly, if the impression is poured too quickly, or if the impression is not properly moistened before pouring the stone. Using a vibrator or adding stone in small increments can help reduce the formation of air bubbles, but they are not the primary cause of the issue. Impression material that is too thick may make it difficult to properly capture the details of the teeth, but it is not directly responsible for air bubbles in the stone cast.

Air Bubbles in a Stone Cast Are Caused By