17. Elastomeric impression 3

29/08/2020 3 min
17. Elastomeric impression 3

Listen "17. Elastomeric impression 3"

Episode Synopsis

ADDITION SILICONE- Hydrophobic- Polyvinyl siloxane – another name- Catalyst – platinum- By-product – H2 gas – smaller molecule- Least dimensional change- Most accurate impression material preferred for onlay cavity- OSMF patients (less mouth opening)- Never pour immediately, wait for 30 mins for the release of H2 gas – if not pin-point depression on cast- Expensive – disadvantage- Only vinyl gloves – no latex