To evaluate the accuracy and repeatability of different intraoral scanners on shade determination. This is attributed to the alignment of the maxillary and mandibular digital definitive casts. The accuracy of implant-supported connecting crowns fabricated using the optical method was significantly lower than that of implant-supported connecting crowns fabricated using the conventional method. No significant difference was observed after occlusal adjustment of the superstructures obtained using the conventional method.Ĭonclusions: The precision of definitive casts obtained via the optical method was virtually equal to that of definitive casts obtained via the conventional method. The amount of lift of the incisal pin when the superstructure obtained via the optical method was returned to the master model was significantly larger than that when the superstructure obtained via the conventional method was returned to the definitive cast and the master model. Results: No significant difference was observed for either the angle or the distance between the two abutments. To compare the amount of lift of the incisal pin, each of the 10 superstructures was fabricated via computer-aided design/computer-aided manufacturing and then returned to the master model.

The distance and angle between the two abutments of each definitive cast were compared. Additionally,10 conventional definitive casts were fabricated. Methods: Using a master model with two implant bodies inserted into the right mandibular molar area, 10 digital definitive casts were fabricated. Purpose: To investigate the accuracy of implant-supported connecting crowns fabricated with digital definitive casts and conventional definitive casts.

Further in vivo studies evaluating the accuracy of intraoral digital impressions on the fabrication of a wider range of restorations such as inlays, veneers, and full-arch restoration need to be conducted. However, for full-arch restorations, conventional impressions result in better accuracy.įurther enhancements needs to be undertaken regarding intraoral scanners to improve its accuracy regarding fabrication of full-arch restorations. This study also compared the accuracy, reliability, and ease of use of different types of intraoral scanners available and correlated the results with the different scanning technologies.ĭigital impressions offer the same level of accuracy as conventional impressions regarding fabrication of crowns, fixed dental prostheses (FDPs), implant-supported crowns, and short-span FDPs with marginal gap values within the clinically acceptable range (<120 μm). The aim was to compare the accuracy of digital intraoral impressions with conventional impressions on the fabrication of different types of restorations.

Scanner intraoral sirona bluecam