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Materials 2017, 10(3), 244; doi:10.3390/ma10030244

Wear Behavior of Ceramic CAD/CAM Crowns and Natural Antagonists

1
Department of Biological and Material Sciences in Dentistry, Faculty of Health, Witten/Herdecke University, Alfred-Herrhausen-Strasse 44, 58455 Witten, Germany
2
Department of Prosthodontic, Faculty of Health, Witten/Herdecke University, Alfred-Herrhausen-Strasse 44, 58455 Witten, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Dinesh Agrawal
Received: 23 January 2017 / Revised: 23 February 2017 / Accepted: 25 February 2017 / Published: 28 February 2017
(This article belongs to the Section Biomaterials)
View Full-Text   |   Download PDF [1519 KB, uploaded 28 February 2017]   |  

Abstract

Objective: Evaluation of wear behavior of computer-aided design/computer-aided manufacturing (CAD/CAM) crowns from various restorative materials and natural antagonists. Method: Full CAD/CAM crowns fabricated with nanoceramic resin (Lava Ultimate (LU)), a glass ceramic in a resin interpenetrating matrix (Vita Enamic (VE)) and a lithium silicate reinforced ceramic enriched with zirconia (Vita Suprinity (VS)) were cemented on human molars. The crown and antagonists were subjected to simulated chewing. 3D data sets, before and after the chewing simulation, were generated and matched. Occlusal surface roughness, vertical and volume loss of the crowns and antagonists were analyzed. Results: Crown roughness was significantly different between the LU and VE groups after chewing simulation. Crown vertical loss differed in all groups. The highest crown volume loss was found in the LU group, and the lowest in the VE group. Comparisons between the LU and VE groups and the LU and VS groups were significantly different. The highest antagonist volume loss was reached in the VE group, the lowest was in the LU group. Conclusion: Roughness increased after chewing simulation. LU crowns are the most natural antagonist-friendly; these were the most susceptible to vertical and volume loss. Of the tested materials, the VE crowns are the most stable regarding occlusion. View Full-Text
Keywords: wear; CAD/CAM; full ceramic crowns; resin-matrix ceramics; glass-matrix ceramics; natural antagonist; volume loss; surface morphology wear; CAD/CAM; full ceramic crowns; resin-matrix ceramics; glass-matrix ceramics; natural antagonist; volume loss; surface morphology
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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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MDPI and ACS Style

Naumova, E.A.; Schneider, S.; Arnold, W.H.; Piwowarczyk, A. Wear Behavior of Ceramic CAD/CAM Crowns and Natural Antagonists. Materials 2017, 10, 244.

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