Fig. 5. SEM images of the mesial margin of abrasion under topography contrast (a) and material contrast (b)
Fig. 5. SEM images of the mesial margin of abrasion under topography contrast (a) and material contrast (b)
Fig. 4. Luting agent located mostly in the crown (a) and only sparsely on the implant (b). A crown fragment is remaining on the implant
Fig. 4. Luting agent located mostly in the crown (a) and only sparsely on the implant (b). A crown fragment is remaining on the implant
Fig. 3. Area of abrasion (yellow surface) and maximum vertical wear (arrow)
Fig. 3. Area of abrasion (yellow surface) and maximum vertical wear (arrow)
Fig. 2. Four replicas on specimen stubs and foam pellets in the sample holder of the Micro-CT
Fig. 2. Four replicas on specimen stubs and foam pellets in the sample holder of the Micro-CT
Fig. 1. Luted crown on embedded implant before chewing simulation
Fig. 1. Luted crown on embedded implant before chewing simulation
ANOVA results
Pull-out forces
Maximum wear
Volume wear
F (df)
0.02 (3, 16)
...
CS round (n)
Pull-out forces
Maximum wear
Volume wear
#1 (5)
319.6 (75.4)
...
Voltage
60 kV
Amperage
167 μA
Filter
No filter
...
Baumgart, P., Kirsten, H., Haak, R. et al. Biomechanical properties of polymer-infiltrated ceramic crowns on one-piece zirconia implants after long-term chewing simulation.
Int J Implant Dent 4, 16 (2018). https://doi.org/10.1186/s40729-018-0127-5
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Received: 16 November 2017
Accepted: 20 March 2018
Published: 23 May 2018
DOI: https://doi.org/10.1186/s4072...
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were m...
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Pia Baumgart, Holger Kirsten, Rainer Haak, and Constanze Olms declare that they have no competing interests.
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Department of Dental Prosthodontics and Materials Science, University of Leipzig, Liebigstraße 12, Haus 1, 04103, Leipzig, Germany
Pia Baumgart
Institute for Medical Informatics, Statistics, and Epidemiology (IMISE), Haertelstraße 16-18, 04107, Leipzig, Germany
Holger Kirsten
LIFE Research Center for Civilization Diseases, University of Leipzig, Philipp-Rosenthal-Straße 27, 04103, Leipzig, ...
The authors would like to thank T. Meißner for the lab support.
Not applicable
The datasets supporting the conclusions of this article are available. Availability of data and materials by the corresponding author: constanze.olms@medizin.uni-leipzig.de
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Three-dimensional space
Analysis of variance
Computer-aided design/computer-aided manufacturing
confidence interval (exact) according to Clopper-Pearson
Chewing simulation
degrees of freedom
Et alii/et aliae/et alia
F test
Mean
X-ray micro-computed tomography
Number
p value
Polymer-infiltrated ceramic network
Standard deviation
Scanning electron microscope
Vita Enamic
The present study demonstrates that elastic PICN crowns on rigid one-piece zirconia implants seem to be a promising material combination for clinical practice. Though the crowns suffered major wear after CS, the stability was not affected, and no catastrophic failure occurred. However, clinical trials are essential to examine the behavior of the material combination, especially in comparison to ot...
The missing comparison to other PICN materials can be considered a limitation of the study. Since VE is a unicum in the family of PICN materials, it is difficult to find an appropriate material of comparison, especially since Lava Ultimate (3M Espe), a resin nanoceramic, is no longer indicated as a crown material due to a high rate of loosening. The review of Mainjot et al. reported that the loose...
In the study of Naumova et al., volume and vertical wear of PICN crowns, compared to other materials such as a nanoceramic resin and a lithium silicate reinforced ceramic after CS, were tested [11]. They used the same settings of CS as in the present study, but the crowns were luted to extracted molars instead of implants and extracted molars as antagonists were used as well. Concerning volume and...
To the best of our knowledge, it was the first time that the biomechanical properties of polymer-infiltrated ceramic crowns on one-piece zirconia implants after long-term chewing simulation were examined. The present in vitro study investigated the biomechanical properties concerning surface wear and bond strength. No fractures occurred during long-term chewing simulation, and the abrasion of the ...
No failure occurred as none of the tested crowns or implants was fractured or loosened during or after CS.
The tested crowns showed a maximum wear depth of M = 0.31 ± 0.04 mm (mean ± SD) and volume wear of M = 0.74 ± 0.23 mm3 (mean ± SD). Table 2 shows the mean and standard deviation of assessed parameters (pull-out forces, maximum wear, volume wear) of each round o...
For volume assessment of abrasion, each 3D data set was segmented before and after CS in CTAn (CTAnalyzer V.1.15.4.0, Bruker microCT). Both data sets were overlapped, and the remaining volume of abrasion quantified in pixels and converted into cubic millimeters.
The maximum wear depth was determined by “blowing up” virtual bullets within the surface of abrasion. The diameter of the most massi...
The specimens attached to the parallelometer were perpendicularly recessed until only the upper coils of the implants were on view.
To produce replicas of the specimens from the experimental group, the crowns’ occlusal was cast using VPS Hydro Putty und VPS Hydro Light Body (Henry Schein Inc., New York, USA) before and after CS. The impression was grouted with Stycast 1266 (Loctite Henkel Elect...
Twenty-five PICN crowns (Vita Enamic, Vita Zahnfabrik, Bad Säckingen, Germany) for premolars were produced using CAD/CAM technology and polished with the Vita Enamic Polishing Set Technical (Vita Zahnfabrik) as recommended by the manufacturer. All crowns were bonded to identical one-piece zirconia testing implants. The implants were turned from pre-sintered zirconia blocks (VITA In-Ceram® 2000 ...
The demand for tooth-colored dental restorations has increased rapidly within the last few years. Ceramic restorations can often meet these requirements. In dental implantology, zirconia especially—due to its esthetical advantage as well as high flexural strength and outstanding biocompatibility—has gained importance [1]. On the other hand, one-piece zirconia implants are not yet commonly use...
Implant and superstructure provide a complex system, which has to withstand oral conditions. Concerning the brittleness of many ceramics, fractures are a greatly feared issue. Therefore, polymer-infiltrated ceramic networks (PICNs) were developed. Because of its high elastic modulus, the PICN crown on a one-piece zirconia implant might absorb forces to prevent the system from fracturing in order ...