There are two types of silicone impression material, addition and condensation (reflecting each of their setting reactions). A dental precise impression material comprises condensation or addition type room temperature-vulcanizing silicone, and further contains 0.1 to 10.0 weight % of at least one protein soluble or slightly soluble in water optionally with 0.05 to 5.0 weight % of at least one hydrophilic nature-affording agent selected from hydrophilic silicone oils and nonionic surface active agents. Kit: 3.5 lb Jar Base Putty, 3 x 20 ml Tubes Catalyst Paste 2 paste system (base and accelerator. sions : addition silicone, condensation silicone, polysul-fide and polyether (18,21,28). CHEMISTRY A. ... 2. condensation silicone 3. polyethers 4. addition silicone. – They are clean and do not have an unpleasant taste or smell. Types of Silicone Rubber. Alkyl silicate (Cross linking) 2. It offers superior consistency and consistent physical properties. Silicones are inherently hydrophobic and as such require excellent moisture control for optimal use. With regard to impressions, for example, silicone is used in cases of root canals, soft structures and bone tissues, in addition to implants and functional impressions of full dentures. Silicone, being a more elastic material, allows for more uses for dentists than alginate. Composition: Base paste 1. Composition of Polysulfide Impression Materials. Condensation silicones. Fillers (Colloidal silica or titanium dioxide) (white) Catalyst paste 1. Our best C-silicone – SILECT® – was developed using our many years of experience and chemical expertise and employing state-of-the-art production technologies. A silicone mold lends itself well for resin or plaster casting, as well Skin safe and food safe silicone mold rubbers are also available. polymerize more slowly liberate ethyl alcohol as a byproduct of the polymerization reaction undergo high shrinkage during the first 24 hours. This premium impression material offers excellent technical properties such as very low shrinkage and … Condensation SiliconeCondensation Silicone Impression MaterialImpression Material 11. It is useful in processing cold cure acrylic partials, repairs, relines and denture re-bases. Addition silicone. In the 1950s the rubber base materials, first in the form of the polysulfide and later the silicone, began to be used as dental impression materials (9). – Addition silicone impression materials are also called vinyl polysiloxanes and […] Zetaplus System, Zhermack’s first ever silicone range, has been on the market for over 30 years and provides a versatile solution to the diverse demands of daily clinical practice. Darby's Condensation Silicone Putty is a two part base/catalyst impression system that is soft and malleable during mixing. Addition silicones have become the most used impression material in advanced restorative dentistry. When should they be used? 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