Pro-Stone 21 is a formulated hemihydrate plaster (CaSO4.½ H2O) produced from naturally occurring gypsum mineral. It exists in white, pastel yellow or pastel peach. Used in the dental industry, Pro-Stone 21 is an extra-hard stone plaster with very low expansion for very precise fixed prosthetic work.
- Precise reproduction
- Very high mechanical properties
- Perfect workability
- Creamy, homogeneous
- Product texture - Class 4