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Dimensional Accuracy Evaluation of Temporary Dental Restorations with Different 3D Printing Systems
Article

Dimensional Accuracy of Dental Models for Three-Unit Prostheses Fabricated by Various 3D Printing Technologies

1
Department of Prosthodontics and Dental Research Institute, Seoul National University Dental Hospital, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul 03080, Korea
2
Sense Dental Laboratory, 1104, Seoul Soop IT-Valley, 77, Seongsuil-ro, Seongdong-gu, Seoul 04790, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Juergen Stampfl
Materials 2021, 14(6), 1550; https://doi.org/10.3390/ma14061550
Received: 4 March 2021 / Revised: 18 March 2021 / Accepted: 18 March 2021 / Published: 22 March 2021
(This article belongs to the Special Issue 3D-Printed Dental Materials)
Previous studies on accuracy of three-dimensional (3D) printed model focused on full arch measurements at few points. The aim of this study was to examine the dimensional accuracy of 3D-printed models which were teeth-prepped for three-unit fixed prostheses, especially at margin and proximal contact areas. The prepped dental model was scanned with a desktop scanner. Using this reference file, test models were fabricated by digital light processing (DLP), Multi-Jet printing (MJP), and stereo-lithography apparatus (SLA) techniques. We calculated the accuracy (trueness and precision) of 3D-printed models on 3D planes, and deviations of each measured points at buccolingual and mesiodistal planes. We also analyzed the surface roughness of resin printed models. For overall 3D analysis, MJP showed significantly higher accuracy (trueness) than DLP and SLA techniques; however, there was not any statistically significant difference on precision. For deviations on margins of molar tooth and distance to proximal contact, MJP showed significantly accurate results; however, for a premolar tooth, there was no significant difference between the groups. 3D color maps of printed models showed contraction buccolingually, and surface roughness of the models fabricated by MJP technique was observed as the lowest. The accuracy of the 3D-printed resin models by DLP, MJP, and SLA techniques showed a clinically acceptable range to use as a working model for manufacturing dental prostheses View Full-Text
Keywords: 3D printing; digital light processing (DLP); multi-jet printing (MJP); stereo-lithography apparatus (SLA); dimensional accuracy 3D printing; digital light processing (DLP); multi-jet printing (MJP); stereo-lithography apparatus (SLA); dimensional accuracy
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MDPI and ACS Style

Yoo, S.-Y.; Kim, S.-K.; Heo, S.-J.; Koak, J.-Y.; Kim, J.-G. Dimensional Accuracy of Dental Models for Three-Unit Prostheses Fabricated by Various 3D Printing Technologies. Materials 2021, 14, 1550. https://doi.org/10.3390/ma14061550

AMA Style

Yoo S-Y, Kim S-K, Heo S-J, Koak J-Y, Kim J-G. Dimensional Accuracy of Dental Models for Three-Unit Prostheses Fabricated by Various 3D Printing Technologies. Materials. 2021; 14(6):1550. https://doi.org/10.3390/ma14061550

Chicago/Turabian Style

Yoo, Soo-Yeon, Seong-Kyun Kim, Seong-Joo Heo, Jai-Young Koak, and Joung-Gyu Kim. 2021. "Dimensional Accuracy of Dental Models for Three-Unit Prostheses Fabricated by Various 3D Printing Technologies" Materials 14, no. 6: 1550. https://doi.org/10.3390/ma14061550

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