Accuracy of Four Intraoral Scanners in Full-Arch Scans

This research aims to evaluate the accuracy of four intraoral scanner models in full-arch scans. A master model was scanned using a high-precision desktop scanner, and a digital reference model was created. The master model was then scanned ten times by each of the intraoral scanners studied (TRIOS® 3, CEREC OmniCam, iTero™, and Medit i500). The digital models were compared to the master model using 3D measurement software. The analysis revealed significant differences in accuracy among the studied scanners, with the iTero™ scanner showing the best performance (p=0.0003). All scanners exhibited an average discrepancy of less than seventy micrometers in full-arch scans. These findings suggest that while all tested scanners are within clinically acceptable accuracy limits, the iTero™ may offer superior performance for full-arch digital impressions, potentially leading to improved outcomes in extensive dental rehabilitations.