![]() Material aids in easy removal of the set impression owing Strain during compression, with the most advantageous Studies have justified the use of PE as an impression material for multiunit implant-retained restorations in completelyĮdentulous situations, because it has the property of low Previous studies have demonstrated that the open-tray technique is more accurate than Open and closed tray techniques are the most commonly used protocols. ![]() (PVS) have been selected as materials of choice ( 15). Reported in various studies regarding splinted or non-splinted impression copings ( 21, 22).ĭifferent materials have been considered for making implant impressions. Method, for one-piece implant-supported fixed dental prostheses in edentulous jaws. Splinted technique produced master casts that were moreĪccurate than the ones produced using the non-splinted ( 19) inferred that splinting impression copings with acrylic resin provided favourable results inĪngled implants. ( 18) observed noĭifference between splinted and non-splinted impressionĬopings. The closed-tray method ( 16, 17).Herbst et al. Various impression techniques have been considered for obtaining accurate master casts ( 14, 15). Implants, the quality of the final impression and transfer of the exact positions of the implants to the model are of utmost importance ( 13 ). Implant components and transfer copings ( 7, Of tray, die material, implant angulation, and fit tolerance between the The factors that influence the castĪccuracy are the characteristics of the impression material, technique, type Fit precision depends on many factors, among which the impression and an accurate Prostheses, implants, and peri-implant structures ( 4, 5). ![]() ![]() The mismatchīetween osseous implants and their superstructures induces stresses in Important factor that determines the treatment success ( 3). The passive fit of the implant–supported superstructure is an Implant-supported prostheses have become an essential treatment modality ( 1, 2). ![]()
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