Die Stones Used In Dentistry

Die Stones Used In Dentistry

Write a short note on the die stone.
Answer:

Die Stone: Die stone is of two types, i.e.

•  Type IV: Die stone with high strength low expansion
• Type V: Die stone with low strength and high expansion.

Properties of Die Stone:

Manipulation of Die Stone:

The thick mix should be prepared and vibrated in a rubber base impression. The base is poured in a dental stone or dental plaster. Die stone should be left for 24 hours to gain maximum hardness and the cast should be separated 1 hour after pouring.

Uses of Die Stone:

• Type IV: Die material for fabrication of wax patterns for dental cast metal restorations including intracoronal and radicular.
• Type V: Die material for fabrication of wax patterns for dental cast metal restorations where high expansion is needed to compensate for the alloy shrinkage such as base metal alloy.

Advantages of Die Stone:

• They have the ability to reproduce fie detail and sharp margins.
• They are compatible with all impression materials.
• Their dimensional accuracy is considered to be accurate.
• They are relatively inexpensive.
• They are easy to manipulate.

Disadvantages of Die Stone:

• Mechanical properties are not ideal.
• They have susceptibility for abrasion during the carving of wax patterns.