Gypsum Products Flashcards
Traditional Names of Type III Gypsum
Dental Stone Class I
Traditional Names of Type IV Gypsum
Dental Stone Class I
Other Names of Type II Gypsum
Alabaster
β-hemihydrate
Other Names of Type III Gypsum
Castone
Hydrocal
α-hemihydrate
Other Names of Type IV Gypsum
Die stone
Dental Stone of High Strength
Densite
α-hemihydrate
Process of Calcination of Type II Gypsum
Open
Process of Calcination of Type III Gypsum
Closed
Process of Calcination of Type IV Gypsum
Open - boiled in 30% solution of calcium chloride
Closed - with >1% sodium succinate
Type of Cast/Other Uses in Dentistry of Type II Gypsum
Diagnostic/Model/Study Cast
Investing material
Mounting of casts on articulation
Type of Cast/Other Uses in Dentistry of Type III Gypsum
Master cast (final model)
Type of Cast/Other Uses in Dentistry of Type IV Gypsum
Master cast
Die fabrication
Powder Particles and Crystals of Type II Gypsum
creamy white, irregular in shape, large, porous, spongy
Powder Particles and Crystals of Type III Gypsum
yellow, small, dense, regular in shape
Powder Particles and Crystals of Type IV Gypsum
gree/bright yellow/aqua, finer, denser, more regular in shaped than class I dental stone
Traditional Names of Type II Gypsum
Plaster of Paris
Model Plaster
