Abstract
Computerized optical impression making is one of the most exciting topics in dentistry today. Therefore, it is very important to know how accurate these devices are. Purpose: To investigate the influence of a software update of an intraoral scanner. Materials and Methods: Accuracy was tested in terms of trueness and precision. An acrylic model was scanned with an industrial scanner. The dataset was used as reference for the evaluation of the CEREC AC Omnicam datasets and statistical analyses implemented. Results: Trueness and precision values very significantly smaller with the latest software version as opposed to the previous version. Conclusion: Within the limits of the present study, the investigated intraoral scanner meets the highest standards in terms of trueness and precision. The authors strongly recommend to not use software other than the proprietary workflows to export files to the open STL file format.
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