![]() ![]() evaluated the compatibility of VPS, PVES, and PE impression materials to different tray materials. They found that set VPS was more hydrophilic than PVES and PE. compared the advancing contact angle of water on the surface of several set elastomeric impression materials such as VPS, PVES, and PE. compared the dimensional stability and accuracy of PE, VPS, and PVES materials and observed that PVES yielded more accurate impressions than those of VPS and PE. As related to flexibility, PE, VPES, and PVS recorded the higher flexibility than VPS containing nanofillers, while VPS containing nanofillers and PVES showed the highest TR. VPS containing nanofillers showed the greatest dimensional stability. They found that all materials were hydrophilic, especially PVES and PE which recorded the highest wettability. compared the wettability, dimensional changes, flexibility, and tear resistance (TR) of PVES and VPS containing nanofillers with conventional VPS and PE impression materials. They found that the PVES was dimensionally stable for clinical use after disinfection for 30 min in glutaraldehyde and storage for up to 2 weeks. ![]() investigated the dimensional stability of five PVES consistencies when stored for up to 2 weeks, with and without using a standard disinfection procedure. ![]() Advances in elastomeric chemistries have led to the invention of a new generation of impression materials which is a combination of polyvinyl and PE called “polyvinyl ether silicone (PVES).”įew of the properties of this newly introduced material, that is, PVES have been reported by several authors. Among available elastomeric materials, the vinyl polysiloxanes (VPS) and polyethers (PEs) are used most frequently. Elastomeric impression materials have always been the choice of material in fixed prosthodontics, due to inherent qualities such as reduced marginal voids and distortion resulting in improved quality of gypsum dies. The successful fabrication of restorations largely depends on an accurate impression from which a replica of the intraoral structures can be precisely created. ![]()
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