Which impression material is used when an extremely accurate final impression is essential?
A)Elastomeric
B)Alginate
C)Reversible hydrocolloid
D)Light-cured

Question

Quizplus · Accepted Answer

An elastomeric impression material is used when an extremely accurate impression is essential,because it has a rubbery quality that makes it possible to remove the impression after it is set without creating a distortion or tearing.
Because of the water content,alginate may tear or distort when removed from the mouth.
Because of the water content,reversible hydrocolloid may tear or distort when removed from the mouth.
Elastomeric is the material of choice,and it is supplied as a self-curing base and catalyst.

Which Impression Material Is Used When an Extremely Accurate Final