Which of the following has particles that are rough, irregular, and porous?
a. Plaster of Paris.
b. Artificial stone.
The psi for artificial stone is:
Match the use or description of the product in Column I to the product in Column II.
Write your answers in the spaces provided.
Plaster of Paris
Make hard, strong master casts
Make matrices for prosthodontic
Make hard, strong dies
Attach casts to articulators
Prismatic, more regular in shape, dense,
Rough, irregular, porous.