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Dental impression materials with elastomeric properties whose main component is polyether which is designed to make an accurate negative reproduction of a given area of the oral cavity. These dental impression materials consist of a base (polyether), a cross-linking agent (e.g., sulfate), a catalyst (e.g., glycol-based plasticizer) and a filler (e.g., silica). Polyether dental impression materials with fast setting time are available. They are less rigid for easier removal. These dental impression materials are supplied in bulk, cartridges, packages, and tubes; automix and autodispensing systems are also available. They are used in dental offices for crowns and bridges, inlays and onlays, functional impressions, and implant abutments.
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