Plaster Mixing and Casting Techniques

This video tutorial guides viewers through the process of making a plaster cast from a dental impression. It begins with an introduction and a list of necessary materials, including type 3 stone plaster, a dental impression, and various tools. The tutorial then provides detailed instructions on mixing the plaster, applying it to the mold, and ensuring the correct setting time. Finally, it covers the removal of the mold and concludes with a call to action.

What is the purpose of the box used in the plaster casting process?

• To replace the dental impression

• To help manipulate the impression with less risk

• To store the materials

• To measure the plaster

Which type of plaster is recommended for the casting process?

• Type 1

• Type 2

• Type 3

• Type 4

What is the correct proportion of plaster to water?

• One tablespoon per centimeter

• Two tablespoons per centimeter

• Three tablespoons per centimeter

• Four tablespoons per centimeter

What tool is used to mix the plaster?

• Spatula

• Brush

• Spoon

• Stick

Why is it important to pour the plaster slowly around the sides of the mold?

• To make the process faster

• To save plaster

• To ensure the occlusal surfaces of the teeth are well-defined

• To avoid spilling

What should be done to remove air bubbles from the plaster?

• Add more water

• Use a vacuum

• Tap the mold gently

• Stir vigorously

How long does it take for the plaster to set?

• 20-25 minutes

• 30-35 minutes

• 50-55 minutes

• 40-45 minutes

What is the final step after the plaster has set?

• Paint the mold

• Heat the mold

• Remove the mold

• Add more plaster