Clinical and laboratory procedures involved in the creation of implant prosthetics are numerous and highly demanding. Implant-supported dental restorations that are produced by the conventional method are made indirectly, on a model that should faithfully reproduce the morphology, position, and interrelationships of the remaining teeth, implants, residual alveolar ridges, and surrounding soft tissues. Although such favorable scientific evidence has influenced the wide application of implantology and implant prosthetics, a certain percentage of technical and biological complications of different character and etiology should not be neglected, as they indicate that a careful and thoughtful approach is needed when planning and fabricating superstructures supported by implants. Meta reviews of the findings yielded by the available longitudinal clinical trials on the long-term survival rate of endoosseous implants indicate that implant-supported single crowns (SCs), implant-supported fixed dental prostheses (FDPs), and implant-supported removable partial dentures (RPDs) are safe and predictable treatment methods with high success rates. Owing to the technological advancements in the medical field, and the extensive research-based evidence confirming the effectiveness of implant prosthetics, this scientific and clinical discipline has gained popularity in recent decades. Analysis results further revealed statistically significant differences in the measured indicators across impression methods, implants, and polymer materials. The splint method in combination with addition silicone resulted in the smallest mean deviations from the center of the parallel implant base compared to other combinations of methods and materials. The open and splint method in combination with addition silicone, as well as the splint method and polyether combination yielded more accurate results when using implants under 20° angulation compared to other method and material combinations. Specifically, 20° implant angulation in relation to the vertical plane has a greater impact on the impression accuracy compared to parallel implants. The study findings indicate that all aforementioned factors impact the accuracy of the definitive working model. The paper presents the influence of impression methods, polymer materials, and implant angulation on the accuracy of the definitive working model for the production of implant-supported dental restorations, based on the analysis of results obtained using different impression methods, materials, and parallel and angulated implants.
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