Dental All of the following statements about addition silicone impression material are true EXCEPT: A They evolve hydrogen when cast if they are not fully cured B They exhibit a very low setting shrinkage C They have a lower tear resistance than polysulphide rubbers D They set by condensation polymerization 💡 Explanation All of the following statements about addition silicone impression material are true EXCEPT: ✓ Correct Answer: D. They set by condensation polymerization