Use Of Agar As A Dental Impression Material

Use Of Agar As A Dental Impression Material

The lamination technique is also known as the agar-alginate combination technique.

• In this technique, a syringe type of agar is loaded in a cartridge, and alginate of the regular type is mixed and placed on a stock tray.
• The syringe agar is injected around the preparation.
• The cooled alginate is seated on the top of the agar.
• Alginate sets in about 3 minutes and agar gels within this time as a result of being cooled by the alginate.

“Best Practices For Using Agar Impression Material In Dental Labs”

• During setting of alginate and gelling of agar, a bond forms between them. When the tensile strength is between 600 to 1100 g/cm the bond is better.
• The impression is removed in about 4 minutes. The surface of the impression is in agar and the base of the impression is in alginate.
• Accuracy is good for an agar-alginate impression

“Understanding The Role Of Agar Impression Material In Modern Dentistry”

Advantages of the Lamination Technique

• The syringe of agar produces better results than alginate.
• Fewer air bubbles
• Water-cooled trays are not needed so it is more convenient.
• It sets faster than the regular agar technique.

“Step-By-Step Guide To Explaining Agar Impression Techniques”

Impression Materials Agar And Alginate

Difference between irreversible and reversible hydrocolloid: