Effect of Simultaneous Sintering of Bioglass to a Zirconia Core on Properties and Bond Strength

This study aimed to assess bioglass sintering to a zirconia core on surface properties and bonding strength to resin cement. Zirconia specimens were divided into four groups: G I: sintered; G II: bioglass modified zirconia (a bioglass slurry was sintered with zirconia at 1550 °C); G III: sandblasted...

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Bibliographic Details
Published in:Materials 2021-11, Vol.14 (23), p.7107
Main Authors: El-Wassefy, Noha Abdel Mawla, Özcan, Mutlu, Abo El-Farag, Shaimaa Ahmed
Format: Article
Language:English
Subjects:
Adhesives
Aluminum oxide
Bioglass
Bond strength
Bonding agents
Bonding strength
Cement
Chemical analysis
Etching
Fractures
Indentation
Mechanical properties
Microhardness
Morphology
Profilometers
Resins
Sandblasting
Shearing
Sintering
Surface hardness
Surface properties
Surface roughness
Thermal cycling
Zirconium dioxide
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Summary:This study aimed to assess bioglass sintering to a zirconia core on surface properties and bonding strength to resin cement. Zirconia specimens were divided into four groups: G I: sintered; G II: bioglass modified zirconia (a bioglass slurry was sintered with zirconia at 1550 °C); G III: sandblasted using 50 μm Al2O3 particles; and G IV: Z-prime plus application. Surface morphology and chemical analysis were studied using a scanning electron microscope and energy-dispersive spectroscopy. Surface roughness was evaluated using a profilometer. Surface hardness was measured using an indentation tester. For the microshear bond strength test, resin cement cylinders were bonded to a zirconia surface. Half of the specimens were tested after 24 h; the other half were thermocycled (5–55 °C) for 1000 cycles. A shearing load was applied at a crosshead speed of 0.5 mm/min on a universal testing machine. Data were analyzed with ANOVA using SPSS software at (p < 0.05). Results: tThe mean surface roughness of G II was significantly higher than G I and G III. The microhardness of G II was significantly lower than all groups. For bond strength, there was no significant difference between groups II, III, and IV after thermocycling. Conclusions: Bioactive glass can increase the bond strength of zirconia to resin cement, and is comparable to sandblasting and Z-prime bonding agents.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14237107