1.

Difference between impression plaster and dental plaster

Answer»

Impression plaster is a rigid impression materials,used in SHELLAC special trays to make 2RY impressions for edentulous patient has no or shallow undercuts.

Where as dental plaster is the BETA form of calcium sulfate hemihydrate (CaSo4 . 1/2 H2O), a mixture of plaster of paris and WATER.



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