4735MedicalMedium
All of the following statements about Type II silicon impression material are true EXCEPT________?
AThey set by condensation polymerisation
BThey evolve hydrogen when cast if they are not fully cured
CThey exhibit a very low setting shrinkage
DThey have a lower tear resistance than polysulphide rubbers
Correct answer
A. They set by condensation polymerisation
Explanation
The correct answer is They set by condensation polymerisation.