What elastomeric means?
British Dictionary definitions for elastomer elastomer. / (ɪˈlæstəmə) / noun. any material, such as natural or synthetic rubber, that is able to resume its original shape when a deforming force is removed.
What is an elastomeric impression material?
Elastomeric Impression Materials. Elastomers comprise a group of synthetic polymer-based impression materials that are chemically cross-linked when set and that can be stretched and yet rapidly recover to their original dimensions, like vulcanized natural rubber when the applied stress is released.
What are the 4 types of viscosities of elastomeric impression compounds?
The flow or viscosity of an impression material is dependent on the filler content. There are four basic categories: low (syringe or wash material), medium (one-step monophasic material), high (tray material), and very high (putty material).
What is dental elastomer?
Elastomeric impression materials (addition silicones and polyethers) offer high elastic recovery and acceptable flexibility on removal of the impression from the mouth. Recently, new elastomeric impression materials with very high elastic recovery and high tear strength have been introduced.
What is an elastomer impression?
Four basic types of elastomer impression materials are currently in use in the dental profession: (1) silicone rubbers which polymerize by a condensation reaction, (2) polysulfide (mercaptan) rubbers, (3) polyethers, and (4) silicones which polymerize an addition reaction.
What is an elastomeric component?
elastomer, any rubbery material composed of long chainlike molecules, or polymers, that are capable of recovering their original shape after being stretched to great extents—hence the name elastomer, from “elastic polymer.” Under normal conditions the long molecules making up an elastomeric material are irregularly …
What are the different types of elastomeric materials?
There are 4 groups of elastomers; polysulfide, condensation silicone, addition silicone and polyether; each differ in their setting mechanism and their physical and chemical properties.
What are the two types of elastomeric impression materials that are available?
Four types of elastomeric impression materials are available in the market: addition silicone, also known as polyvinyl siloxanes (PVS), condensation silicone, polyether, and polysulfide. Elastomers can present in different consistencies, including putty, heavy body, medium body, and light body.
What are dental elastomeric materials?
What are elastomeric impressions used for?
The elastic impression materials are most generally used for the making of impressions for removable partial dentures, immediate dentures, and crowns and fixed partial dentures when tooth and tissue undercuts and surface detail must be recorded with accuracy.
What is elastic impression material?
Elastic impression materials can be further divided into hydrocolloid and elastomeric impression. Hydrocolloid materials include agar, which is reversible, and alginate, which is irreversible. Elastomeric materials include polysulfide, polyether, condensation-cured silicone, and addition-cured silicone.
What is an elastomer write its one example?
Polyacrylic rubber and silicone rubber are examples of saturated elastomers. Unsaturated Elastomers: They can be cured with the Sulphur vulcanization process. Butyl rubber and natural polyisoprene are examples of unsaturated elastomers.