What Causes Air Bubbles in a Model

question 14

Multiple Choice

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

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Definitions:

Red Bone Marrow

The soft, spongy tissue inside bones that produces blood cells.

Hydrostatic Skeleton

Of soft-bodied invertebrates, a fluid-filled chamber that contractile cells exert force on.

Sea Anemones

Marine, predatory animals of the order Actiniaria; they are notable for their colorful appearance and a body structure similar to a flower.

Anal Sphincter

A ring of muscle surrounding the anus that helps control the passage of feces out of the body by contracting and relaxing.