Before revision: Impression material Adhesive used Polyether Ethyl acetate dissolved in propanol or acetone Polysulphide Styrene acrylonite or butyl rubber dissolved in a ketone or in chloroform Alginate 10–12% toluene dissolved in 45–50% isopropanol Condensation silicone Ethyl silicate (bonds to tray) and poly dimethyl silicone (reacts with impression material) Addition silicone Ethyl silicate (bonds to tray) and poly dimethyl silicone (reacts with impression material), often with the addition of naphtha and ethyl acetate Digital impressions Digital impressions using scanner systems are being adopted in the dentistry.
After revision: Impression material Adhesive used Polyer Ethyl acetate dissolved in propanol or acetone Polysulphide Styrene acrylonite or butyl rubber dissolved in a ketone or in chloroform Alginate 10–12% toluene dissolved in 45–50% isopropanol Condensation silicone Ethyl silicate (bonds to tray) and poly dimethyl silicone (reacts with impression material) Addition silicone Ethyl silicate (bonds to tray) and poly dimethyl silicone (reacts with impression material), often with the addition of naphtha and ethyl acetate Digital impressions Digital impressions using scanner systems are being adopted in the dentistry.