DANB General Chairside Practice Test

For a core build-up using glass ionomer, the dental assistant would mix it to what type of consistency?

1. Thin broth

2. Base or secondary

3. Putty

4. Powdery

The correct answer is: Base or secondary

For a core build-up using glass ionomer, achieving the correct consistency is crucial for ensuring proper handling and bonding characteristics. Mixing glass ionomer to a base or secondary consistency allows the material to be thick enough to support the restoration without being overly viscous. This consistency ensures that the material can be easily placed into the cavity preparation while also providing sufficient bulk and strength to support subsequent restorative procedures. When glass ionomer is mixed too thinly, it may flow excessively and not adhere well to the tooth structure, potentially compromising the effectiveness of the build-up. Conversely, if it’s mixed to a putty consistency, it might be too thick to properly manipulate and could lead to difficulty in achieving an accurate shape and adaptation to the preparation. The powdery consistency wouldn't allow for adequate handling and setting properties necessary for successful core build-ups. Thus, a base or secondary consistency strikes the appropriate balance for effective use in dental procedures.