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Open AccessArticle

Dental Resin-Zirconia Bonding Promotion Using High-Silica PVD Coating with High Ionization Sputtering Processing

1
Dental Materials Science, Applied Oral Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
2
Dental Biomaterials Department, Faculty of Dental Medicine, Al Azhar University, Cairo 11751, Egypt
*
Author to whom correspondence should be addressed.
Coatings 2019, 9(3), 182; https://doi.org/10.3390/coatings9030182
Received: 19 February 2019 / Revised: 26 February 2019 / Accepted: 5 March 2019 / Published: 11 March 2019
Purpose: To evaluate the effect of high-silica coating deposited by high-silica physical vapor deposition (PVD) as a chemical bonding method on resin-zirconia bond strength under different aging conditions. Methods: Twelve Y-TZP blocks were used as the substrates. Four resin cement stubs were bonded on each Y-TZP block, with a total number of 48 resin cement stubs. Two test groups (n = 24) were evaluated: conventional Tribochemical silica-coating (TSC) and high-silica PVD with high ionization sputtering processing. Experimental silane primer (MPS) was brushed over the surface treated Y-TZP blocks, then a polyethylene mold was placed over the coated Y-TZP blocks and filled with the adhesive resin cement, then light-cured for 40 s. The shear bond strength (SBS) was then evaluated in dry condition and after thermo-cycling for 6000 cycles. Surface roughness, mode of failure, surface topography and elemental analysis were also evaluated. Results: In dry condition, PVD-coated zirconia specimens showed significantly higher mean SBS values (11.7 ± 1.3 MPa) compared to TSC (10.2 ± 1.1 MPa) (p = 0.027). The SBS values of TSC and PVD-coated samples after thermo-cycling were higher than in dry condition, but with no statistical significant difference (p > 0.05). Tetragonal-to-monoclinic phase transformation was detected in TSC, but not in PVD-coated zirconia. Significant decrease in surface roughness of PVD samples compared to TSC samples (p < 0.001). The silica content in PVD coating was 51% as detected by EDX. Conclusions: High-silica PVD coating on zirconia can give a reliable resin-zirconia chemical bond without any phase transformation and surface destruction by conventional grit-blasting. View Full-Text
Keywords: physical vapor deposition (PVD); zirconia; tribochemical silica coating (TSC); shear bond strength (SBS); thermo-cycling physical vapor deposition (PVD); zirconia; tribochemical silica coating (TSC); shear bond strength (SBS); thermo-cycling
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MDPI and ACS Style

Abdalla, M.M.; Lung, C.Y.K.; Tsoi, J.K.H.; Matinlinna, J.P. Dental Resin-Zirconia Bonding Promotion Using High-Silica PVD Coating with High Ionization Sputtering Processing. Coatings 2019, 9, 182. https://doi.org/10.3390/coatings9030182

AMA Style

Abdalla MM, Lung CYK, Tsoi JKH, Matinlinna JP. Dental Resin-Zirconia Bonding Promotion Using High-Silica PVD Coating with High Ionization Sputtering Processing. Coatings. 2019; 9(3):182. https://doi.org/10.3390/coatings9030182

Chicago/Turabian Style

Abdalla, Mohamed M.; Lung, Christie Y.K.; Tsoi, James K.H.; Matinlinna, Jukka P. 2019. "Dental Resin-Zirconia Bonding Promotion Using High-Silica PVD Coating with High Ionization Sputtering Processing" Coatings 9, no. 3: 182. https://doi.org/10.3390/coatings9030182

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