Dental Materials 2 بجر نابعش ىنثم .م.أ ةيلك – تيركت ةعماج نانسلاا بط Elastic versus Inelastic • Elastic – Flexible – Recover its shape & dimension after removal from the patient mouth • Inelastic – Rigid – Cannot be removed from the material is non-elastic, so cannot be used in undercut areas. Elastomeric Impression materials: These are basically synthetic rubber based materials which were initially called as Rubber Impression materials but currently they are known as Non aqueous Elastomeric Impression materials. Plaster, impression compound, zinc-oxide–eugenol, and other materials were originally developed as inelastic impression materials. Elastic impression materials /certified fixed orthodontic courses by Indian dental academy 1. www.indiandentalacademy.com 2. Weston A. All our impression products are efficient and withstand disinfectants. Zinc Oxide Eugenol 4. Ease of Handling:Along with this E.g. Compatible with cast & die materials & does not need separating medium. # Agar impression materials differ from alginate impressions in that the former sets by : A. To separate cast from the impression, use warm water. i have a viva this coming monday portion is manipulation of Impression materials are understood as compositions which pass from a plastic state into a hard or elastic state by means of a hardening process. It is made by placing an appropriate material in a stock or custom dental impression tray which is designed to roughly fit over the dental arches.
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