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KMID : 1035320170440030247
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Korean Society for Dental Materials
2017 Volume.44 No. 3 p.247 ~ p.254
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Evaluation of Comparable Scanning Accuracy in Various Intraoral Scanner Systems : An Example of ADA 132 Standard Model
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Kim Jae-Hong
Oh Seung-Han
Um Soo-Hyuk
Min Byung-Kuk
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Abstract
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This study aimed to evaluate the accuracy and precision of intraoral scanners. In order to compare various intraoral scanners, we selected the ADA 132 standard assessment model to provide a measurement standard for comparative evaluation of the scanners. The intraoral scanners assessed in this study were the CS3500, the Trios, the Omnicam, and the Bluecam; the Ceramill Map 400 dental model scanner was used for relative comparison. The scanned data was converted into an STL file to enable evaluation with 3D CAD software(Geomagic wrap; 1 μm). In order to assess accuracy, precision, and trueness, various heights, angles, and distances of the assessment model were selected for evaluation, and each item was measured 30 times. The true values of these assessment items were measured and compared using a 3D coordinate measuring machine. When the data for the 4 models obtained from the intraoral scanners and model scanner was compared, there were no great differences between the intraoral scanners, but the model scanner showed higher accuracy and precision than the intraoral scanners. The Omnicam and the CS3500 showed especially high accuracy and precision. The assessment model and methods selected in this study are thought to provide a fair and standardized method, that can be used effectively as a standard for the objective assessment of dental scanners.
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KEYWORD
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Accuracy, Digital impression, Intraoral scanner
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