Repetition Improves Precision and Trueness of Digital Intraoral Scans

To create a reference images for the assessment of the trueness, the impressions of the upper and lower arch of the oral cavities of four patients were taken using a polyether impression material (3M ESPE Soft Monophase; Minnesota Mining and Manufacturing Co.), and the intaglio scanning was performed on the impression body using a desktop scanner. Scanned images were transformed to the Standard Tessellation Language (STL) file format, and used as reference images.

The participants visited the dental clinic and performed scanning for 4 days. In order to investigate the difference in the precision and trueness of iTero intraoral scanners, the participants scanned the dental arch of a single patient 10 times using an assigned digital intraoral scanner.

The participants visited the dental clinic and performed scanning for 4 days. In order to investigate the difference in the precision and trueness of Trios intraoral scanners, the participants scanned the dental arch of a single patient 10 times using an assigned digital intraoral scanner. .