... 2. condensation silicone 3. polyethers 4. addition silicone. 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. Silicone, being a more elastic material, allows for more uses for dentists than alginate. A silicone mold lends itself well for resin or plaster casting, as well Skin safe and food safe silicone mold rubbers are also available. When should they be used? – They are clean and do not have an unpleasant taste or smell. - works better with gypsum than elastomeric impression materials. – Addition silicone impression materials are also called vinyl polysiloxanes and […] Our best C-silicone – SILECT® – was developed using our many years of experience and chemical expertise and employing state-of-the-art production technologies. Condensation silicones. Silicones are inherently hydrophobic and as such require excellent moisture control for optimal use. There are two types of silicone impression material, addition and condensation (reflecting each of their setting reactions). 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 Silicones – Addition silicones are the most popular type of elastomeric impression material, especially for crown and bridge impressions. Fillers (Colloidal silica or titanium dioxide) (white) Catalyst paste 1. This premium impression material offers excellent technical properties such as very low shrinkage and … 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. Kit: 3.5 lb Jar Base Putty, 3 x 20 ml Tubes Catalyst Paste 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. polymerize more slowly liberate ethyl alcohol as a byproduct of the polymerization reaction undergo high shrinkage during the first 24 hours. Addition silicone. sions : addition silicone, condensation silicone, polysul-fide and polyether (18,21,28). – They are the most accurate, stable, and expensive impression materials. Types of Silicone Rubber. The fabri-cation of a casting requires an impression material that CHEMISTRY A. Condensation SiliconeCondensation Silicone Impression MaterialImpression Material 11. 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