Trueness and precision. An intraoral scanner projects a beam or a light grid onto the surface of a tooth or implant and uses high-resolution cameras to capture the distortion of the beam as it hits ...

Precision is the repeatability of the scans between the scanners being tested (a lower number is better). For trueness, the Trios and iTero systems showed better results with the sequential scanning ...

The precision and trueness are detected at wavelengths of 260, 280 and 800nm. The wavelengths of 260 and 280nm are checked for BioPhotometer D30. (2) The photometric accuracy is checked.