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STUDY ON MEASUREMENTS OF DENTAL ARCH DIMENSIONS ON DIGITAL MODELS USING CEREC PRIMESCAN INTRAORAL SCANNER
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Abstract
Background: Intraoral scanning is the initial and fundamental stage of digital workflow in daily practice. There are numerous commercially available intraoral scanning systems, but only a few have been clinically evaluated, such as Lava COS, iTero, TRIOS. Objectives: Evaluation of the accuracy and reproducibility in measuring dental arch dimensions on digital models created using CEREC Primescan intraoral scanner. Materials and methods: This is an in vitro study conducted following a cross-sectional descriptive study on 60 pairs of plaster models measured using conventional impressions and 60 pairs of digital models using Primescan from corresponding dental arches of the participants. Results: The lower mesiodistal dimensions were statistically significant differences between the two measurement methods for several teeth, including teeth 32, 33, 36, 45, 46, in the first measurement, and tooth 43 in the second time. No significant differences were observed between the two study groups regarding crown height measurements in the second time. The overjet and overbite measurements taken using the two methods showed significant differences between two times of measurements. No different in overall ratio between two methods in both time of measuring. Regarding the reproducibility, only measurement of overjet has a statistically significant difference. Conclusions: Compared to measuring dental arch dimensions on plaster models, measuring on digital models obtained through Primescan intraoral scanning yielded similar results, indicating its potential application in clinical practice
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Keywords
accuracy, reproducibility, digital models, intraoral scanning, Cerec Primescan
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