Accuracy and Reliability of Digital Dental Models Obtained by Intraoral Scans Compared with Plaster Models

This study evaluates the accuracy and reliability of dental arch measurements obtained from digital models created using the CEREC Primescan intraoral scanner compared with traditional plaster models. Measurements of tooth heights and widths were analyzed, showing statistically significant differences only in isolated cases, with minimal deviations overall. Intra-rater and inter-rater reliability were assessed and demonstrated high consistency across measurements. The results indicate that digital intraoral scanning provides comparable accuracy to plaster models with excellent reproducibility, supporting its application in clinical orthodontic practice.