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Durability of resin bonding to zirconia ceramic after contamination and the use of various cleaning methods.

Authors
  • Güers, Philipp1
  • Wille, Sebastian2
  • Strunskus, Thomas3
  • Polonskyi, Oleksandr4
  • Kern, Matthias5
  • 1 Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, Christian-Albrechts University at Kiel, Arnold-Heller-Str. 16, 24105 Kiel, Germany. Electronic address: [email protected] , (Germany)
  • 2 Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, Christian-Albrechts University at Kiel, Arnold-Heller-Str. 16, 24105 Kiel, Germany. Electronic address: [email protected] , (Germany)
  • 3 Institute for Materials Science, Faculty of Engineering, Christian-Albrechts University at Kiel, Kaiserstr. 2, 24143 Kiel, Germany. Electronic address: [email protected] , (Germany)
  • 4 Institute for Materials Science, Faculty of Engineering, Christian-Albrechts University at Kiel, Kaiserstr. 2, 24143 Kiel, Germany. Electronic address: [email protected] , (Germany)
  • 5 Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, Christian-Albrechts University at Kiel, Arnold-Heller-Str. 16, 24105 Kiel, Germany. Electronic address: [email protected] , (Germany)
Type
Published Article
Journal
Dental materials : official publication of the Academy of Dental Materials
Publication Date
Oct 01, 2019
Volume
35
Issue
10
Pages
1388–1396
Identifiers
DOI: 10.1016/j.dental.2019.07.027
PMID: 31447058
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The aim of the study was to evaluate the influence of contamination and different cleaning methods on the tensile bond strength with a phosphate monomer containing luting resin to zirconia ceramic. After the contamination with saliva or silicone disclosing agent, 228 polished and airborne-particle abraded zirconia discs were ultrasonically cleaned with 99% isopropanol. In a second step, the specimens were either treated with argon-oxygen plasma, air plasma, enzymatic cleaning agent or did not undergo an additional cleaning process. Uncontaminated zirconia specimens were used as the control group. X-ray photoelectron spectroscopy (XPS) was used for chemical analysis of the bonding surfaces of specimens. Plexiglas tubes filled with composite resin were bonded to zirconia specimens with a phosphate monomer containing luting resin. Tensile bond strength (TBS) was tested after 3 days or 150 days water storage with 37,500 thermal cycles. XPS revealed a decrease of the carbon/oxygen ratio after plasma treatment and an increase after treatment with an enzymatic cleaning agent in all groups. All contaminated specimens showed high and durable TBS after cleaning with a combination of isopropanol and a non-thermal atmospheric plasma. After the cleaning with enzymatic cleaning agent the TBS was significantly reduced in all groups after 150 days thermal cycling. The combination of isopropanol and plasma cleaning was effective in removing salvia and disclosing agent contamination. Enzymatic clearing agent was not able to remove contamination effectively and had a negative impact on the TBS of non-contaminated specimens. Copyright © 2019 The Academy of Dental Materials. Published by Elsevier Inc. All rights reserved.

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