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Microleakage of Different Self-Adhesive Materials for Lithium Disilicate CAD/CAM Crowns

Objectives: To evaluate the microleakage and marginal gap of various luting materials after cementing ceramic crowns. Methods: Cervical margins of human molars were designed as circular chamfers. Cementation of full-contour ceramic crowns was conducted with zinc-phosphate cement (Harvard cement), re...

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Autores principales: Naumova, Ella A., Valta, Alexander, Schaper, Katharina, Arnold, Wolfgang. H., Piwowarczyk, Andree
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5455752/
http://dx.doi.org/10.3390/ma8063238
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author Naumova, Ella A.
Valta, Alexander
Schaper, Katharina
Arnold, Wolfgang. H.
Piwowarczyk, Andree
author_facet Naumova, Ella A.
Valta, Alexander
Schaper, Katharina
Arnold, Wolfgang. H.
Piwowarczyk, Andree
author_sort Naumova, Ella A.
collection PubMed
description Objectives: To evaluate the microleakage and marginal gap of various luting materials after cementing ceramic crowns. Methods: Cervical margins of human molars were designed as circular chamfers. Cementation of full-contour ceramic crowns was conducted with zinc-phosphate cement (Harvard cement), resin cement (Panavia F 2.0) and self-adhesive resin cements (RelyX Unicem, BifixSE, MaxCem Elite, PermaCem2.0, G-Cem). Aging of specimens was performed in artificial saliva, at 37 °C for four weeks and thermocycling. The marginal gap was measured with a scanning electron microscope and silver precipitation within the microleakage. All data were compared statistically. Results: Independent of the margin preparation, the highest median value for microleakage was 320.2 μm (Harvard cement), and the lowest was 0 μm (Panavia F 2.0). The median value for enamel was 0 µm and for dentin 270.9 μm (p < 0.001), which was independent of the luting material. The marginal and absolute marginal gaps were not significantly different between the tested materials. There was no correlation between microleakage and the marginal gaps. Conclusion: Significant differences in microleakage were found between the tested luting materials (p < 0.05). Independent from the luting materials, the microleakage in dentin showed significantly higher values than in enamel.
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spelling pubmed-54557522017-07-28 Microleakage of Different Self-Adhesive Materials for Lithium Disilicate CAD/CAM Crowns Naumova, Ella A. Valta, Alexander Schaper, Katharina Arnold, Wolfgang. H. Piwowarczyk, Andree Materials (Basel) Article Objectives: To evaluate the microleakage and marginal gap of various luting materials after cementing ceramic crowns. Methods: Cervical margins of human molars were designed as circular chamfers. Cementation of full-contour ceramic crowns was conducted with zinc-phosphate cement (Harvard cement), resin cement (Panavia F 2.0) and self-adhesive resin cements (RelyX Unicem, BifixSE, MaxCem Elite, PermaCem2.0, G-Cem). Aging of specimens was performed in artificial saliva, at 37 °C for four weeks and thermocycling. The marginal gap was measured with a scanning electron microscope and silver precipitation within the microleakage. All data were compared statistically. Results: Independent of the margin preparation, the highest median value for microleakage was 320.2 μm (Harvard cement), and the lowest was 0 μm (Panavia F 2.0). The median value for enamel was 0 µm and for dentin 270.9 μm (p < 0.001), which was independent of the luting material. The marginal and absolute marginal gaps were not significantly different between the tested materials. There was no correlation between microleakage and the marginal gaps. Conclusion: Significant differences in microleakage were found between the tested luting materials (p < 0.05). Independent from the luting materials, the microleakage in dentin showed significantly higher values than in enamel. MDPI 2015-06-03 /pmc/articles/PMC5455752/ http://dx.doi.org/10.3390/ma8063238 Text en © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Naumova, Ella A.
Valta, Alexander
Schaper, Katharina
Arnold, Wolfgang. H.
Piwowarczyk, Andree
Microleakage of Different Self-Adhesive Materials for Lithium Disilicate CAD/CAM Crowns
title Microleakage of Different Self-Adhesive Materials for Lithium Disilicate CAD/CAM Crowns
title_full Microleakage of Different Self-Adhesive Materials for Lithium Disilicate CAD/CAM Crowns
title_fullStr Microleakage of Different Self-Adhesive Materials for Lithium Disilicate CAD/CAM Crowns
title_full_unstemmed Microleakage of Different Self-Adhesive Materials for Lithium Disilicate CAD/CAM Crowns
title_short Microleakage of Different Self-Adhesive Materials for Lithium Disilicate CAD/CAM Crowns
title_sort microleakage of different self-adhesive materials for lithium disilicate cad/cam crowns
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5455752/
http://dx.doi.org/10.3390/ma8063238
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