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Wear Resistance of 3D Printing Resin Material Opposing Zirconia and Metal Antagonists

1
Department of Prosthodontics, College of Dentistry, Yonsei University, 250 Seongsanno, Seodaemun-gu, Seoul 03722, Korea
2
Department of Dental Biomaterials Science and Dental Research Institute, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul 03080, Korea
3
Division of Prosthodontics, Department of Dentistry, Asan Medical Center, College of Medicine, University of Ulsan, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea
*
Author to whom correspondence should be addressed.
Materials 2018, 11(6), 1043; https://doi.org/10.3390/ma11061043
Received: 9 May 2018 / Revised: 11 June 2018 / Accepted: 15 June 2018 / Published: 20 June 2018
(This article belongs to the Section Manufacturing Processes and Systems)
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Abstract

3D printing offers many advantages in dental prosthesis manufacturing. This study evaluated the wear resistance of 3D printing resin material compared with milling and conventional resin materials. Sixty substrate specimens were prepared with three types of resin materials: 3D printed resin, milled resin, and self-cured resin. The 3D printed specimens were printed at a build angle of 0° and 100 μm layer thickness by digital light processing 3D printing. Two kinds of abraders were made of zirconia and CoCr alloy. The specimens were loaded at 5 kg for 30,000 chewing cycles with vertical and horizontal movements under thermocycling condition. The 3D printed resin did not show significant difference in the maximal depth loss or the volume loss of wear compared to the milled and the self-cured resins. No significant difference was revealed depending on the abraders in the maximal depth loss or the volume loss of wear. In SEM views, the 3D printed resin showed cracks and separation of inter-layer bonds when opposing the metal abrader. The results suggest that the 3D printing using resin materials provides adequate wear resistance for dental use. View Full-Text
Keywords: 3D printing; CAD/CAM; wear; resin; zirconia; metal 3D printing; CAD/CAM; wear; resin; zirconia; metal
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Park, J.-M.; Ahn, J.-S.; Cha, H.-S.; Lee, J.-H. Wear Resistance of 3D Printing Resin Material Opposing Zirconia and Metal Antagonists. Materials 2018, 11, 1043.

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