Impregum Penta Soft is a less rigid, soft polyether impression material used to make dental impressions. This particular product is easier to remove and provides better initial hydrophilicity than other VPS products.

Description : Impregum F is a medium-bodied consistency polyether impression material for hand mixing. Indications include crown, bridge, inlay, onlay, function and implant impressions.

polyether impression material
Impregum Penta Soft Medium Body is a medium bodied consistency polyether impression material and is used with the mixing device Pentamix (also manufactured by 3M ESPE). This material is packed in bags that are sealed with a PentaMatic sealing cap.

Polyether impression materials are used for taking impressions when producing dental restorations. Hydrophilic to provide accurate impressions in moist conditions, polyether impression materials come in various viscosities from lightweight/soft to heavyweight and have varying set times.

Polyether impression material is an elastic-type material, as are the polysulfide and silicone materials. These materials have demonstrated good accuracy in clinical evaluations and are thixotropic, which provides good surface detail and makes them useful as a border molding material.

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.

Polysulfides have a long working and setting time, which is an advantage when impressions are being taken of multiple preparations, but a disadvantage when only one or two teeth have been prepared. There is a slight contraction of polysulfide during polymerization.

Polyester foams are generally stronger than polyether foams. They are more rigid and exhibit higher tensile strength. Polyether foams are generally softer, offer good cushioning capabilities, and exhibit superior resistance to moisture than the polyester based foams.

1. The polyethers produced the most accurate complete-arch replicas. The second most accurate were the vinyl polysiloxanes, followed by the polysulfides and the irreversible-reversible hydrocolloids. The least accurate were the reversible hydrocolloids and the irreversible hydrocolloids.

Polysulfide has the highest tear strength. Tear Strength is affected by two major parameters, viscosity, a built-in property, and how fast the impression is pulled out of the mouth, the faster the impression is loaded and pulled out, the higher the tear strength is.

polyvinyl siloxanes
The preferred elastomeric impression materials on the market are polyvinyl siloxanes (PVS) and polyethers (PE). Polyethers are known for their hydrophilic properties and good flowability. Polyvinyl siloxanes, on the other hand, are known for their excellent elasticity, high tear strength and stability.

Permlastic is a polysulfide, condensation-cured, elastomeric impression material in three viscosities. The heavy body consistency results in optimum compression of the Light-Bodied Permlastic in a double-mix, copper-band impression. …