(Jeong Yoo-Geum) - Kyungpook National University Graduate School Department of Dental Science
À̿ϼ±(Lee Wan-Sun) - Kyungpook National University Advanced Dental Device Development Institute
À̱Ժ¹(Lee Kyu-Bok) - Kyungpook National University School of Dentistry Department of Prosthodontics
Abstract
PURPOSE: To evaluate the accuracy of a model made using the computer-aided design/computer-aided manufacture (CAD/CAM) milling method and 3D printing method and to confirm its applicability as a work model for dental prosthesis production.
MATERIALS AND METHODS: First, a natural tooth model (ANA-4, Frasaco, Germany) was scanned using an oral scanner. The obtained scan data were then used as a CAD reference model (CRM), to produce a total of 10 models each, either using the milling method or the 3D printing method. The 20 models were then scanned using a desktop scanner and the CAD test model was formed. The accuracy of the two groups was compared using dedicated software to calculate the root mean square (RMS) value after superimposing CRM and CAD test model (CTM).
RESULTS: The RMS value (152¡¾52 ¥ìm) of the model manufactured by the milling method was significantly higher than the RMS value (52¡¾9 ¥ìm) of the model produced by the 3D printing method.
CONCLUSION: The accuracy of the 3D printing method is superior to that of the milling method, but at present, both methods are limited in their application as a work model for prosthesis manufacture.
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Computer-aided design and computer-aided manufacturing (CAD/CAM) system, Milling, 3D printing, CAD reference model
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Models manufactured by the 3D printing method were more accurate than those manufactured by the milling method.