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DA 160

Alginates, Chapter 35

Potassium Alginate Main ingredient, comes from sea kelp (seaweed) and acts as a thickener
Setting time Time required for chemical action to be completed and when impression to be removed from patients mouth.
Working time Time allowed for mixing, loading trays and positioning in the mouth
Undercuts Recessed areas that are wider on the bottom than on top
Irreversible Hydrocolloid Material that is not able to return to the sol state after becoming a gel. Like cake mix, once cake is cooked it can't go back to the powder mix
Single pour One mix for both portions
Double pour Pouring anatomic portion first then the art portion for base.
Anatomic portion Natural anatomy portion of negative impression. (teeth, gingival ect)
Art portion Base portion of cast; 1/3 overall ht)
Box method Creating a secure base/box with wax and pouring plaster into it; 1 mix for both portions
Created by: cadengel