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河北工业大学
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The effect of subpressure on the bond strength of resin to zirconia ceramic.

Title: The effect of subpressure on the bond strength of resin to zirconia ceramic.
Authors: Li, Yong-Mei1
Zhuge, Rui-Shen1
Zhang, Zu-Tai1
Tian, Yue-Ming1
Ding, Ning1
Source: PLoS ONE. 6/22/2017, Vol. 12 Issue 6, p1-11. 11p.
Document Type: Article
Subject Terms: ZIRCONIUM oxide
BOND strengths
GUMS & resins
CERAMIC materials
SEEPAGE
Author-Supplied Keywords: Adhesives ; Ceramics ; Coatings ; Computer and information sciences ; Data visualization ; Electron microscopy ; Engineering and technology ; Equipment ; Laboratory equipment ; Manufacturing processes ; Materials by attribute ; Materials by structure ; Materials science ; Microscopy ; Physical sciences ; Research and analysis methods ; Research Article ; Scanning electron microscopy ; Schematic diagrams ; Specimen preparation and treatment ; Surface treatments ; Vacuum apparatus
NAICS/Industry Codes: 325211 Plastics Material and Resin Manufacturing ; 325210 Resin and synthetic rubber manufacturing
Abstract: Objective: This study was conducted to investigate the effect of subpressure on the bond strength of resin to zirconia ceramic. The subpressure would create a pressure gradient which could clean out the bubbles in the adhesives or bonding interface. Methods: Twenty-eight pre-sintered zirconia discs were fabricated. Half of them were polished (group P, n = 14), and the rest were sandblasted (group S, n = 14). After sintered,the surface roughness of the zirconia discs was measured. Then, they were randomly divided into two subgroups (n = 7). The groups were named as follows: PC: P %20 no additional treatments; PP: P %20 0.04 MPa after application of adhesives; SC: S %20 no additional treatments; and SP: S %20 0.04 MPa after application of adhesives. Resin columns were bonded to the zirconia specimens to determine shear bond strength (SBS). The bonding interfaces were observed and the fracture modes were evaluated. Statistical analysis was performed on all data. Results: The surface roughness of group S was significantly higher than that of group P (P<0.05). The SBS values were PC = 13.48 ± 0.7 MPa, PP = 15.22 ± 0.8 MPa, SC = 17.23 ± 0.7 MPa and SP = 21.68 ± 1.4 MPa. There were significant differences among the groups (P<0.05). Scanning electron microscopy (SEM) results showed that the adhesives of group SP and PP were closer and denser to the zirconia ceramic than that of group PC and SC. The proportion of the mixed fracture mode significantly increased after adding subpressure (P< 0.05). Conclusion: Subpressure can improve the shear bond strength of resin to zirconia ceramics and increase micro-infiltration between the adhesives and the zirconia ceramics, especially on the rough surfaces. [ABSTRACT FROM AUTHOR]
(Copyright applies to all Abstracts.)
Author Affiliations: 1School of Stomatology, Capital Medical University, Beijing, China
ISSN: 1932-6203 (Sherpa/RoMEO, JCR)
PageCount: 1-12
volume: 12
issue: 6
issn: 19326203
pubdate: 2017
DOI: https://doi.org/10.1371/journal.pone.0179668
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