Gypsum Materials. DA 122 Dental Materials. Applications for Gypsum. Used to make a model from an impression Use of model determines type of gypsum used Gypsums vary in Strength Dimensional accuracy Resistance Reproduction detail Water/powder ratio Setting times. Calcination.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
DA 122 Dental Materials
ground into a fine powder
amount of water is driven out
of the gypsum
See pages 859-860 in Dental Assisting text
original impression material
rigid, fractures and breaks easily
used for edentulous models
Ratio: 60 ml water : 100 gm powder
100 grams powder
Using vibrator to remove air bubbles
Checking for proper thickness