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| Naji, M. |
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| Motta, Antonella |
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| Ertürk, Emre |
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| Petrov, R. H. | Madrid |
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| Ali, M. A. |
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| Rančić, M. |
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| Azevedo, Nuno Monteiro |
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Ammar, Hanan S.
in Cooperation with on an Cooperation-Score of 37%
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article
Effect of Curcumin Suspension and Vitamin C on Dentin Shear Bond Strength and Durability. A Pilot Study
Abstract
<jats:sec><jats:title>Background:</jats:title><jats:p>Preserving the strength and durability of dentin bonds is a concern of dental researchers and practitioners.</jats:p></jats:sec><jats:sec><jats:title>Objective:</jats:title><jats:p>The aim of this study was to investigate the effect of treating etched dentin with vitamin C and curcumin suspension as cross-linking agents on the shear bond strength and durability of a universal dental adhesive.</jats:p></jats:sec><jats:sec><jats:title>Methods:</jats:title><jats:p>Extracted human third molar teeth were collected. Fifty-six flat coronal dentin surfaces were divided equally into four groups: (1) treated with adhesives; (2) etched with 37% H<jats:sub>3</jats:sub>PO<jats:sub>4</jats:sub> for 10s before application of adhesives; (3) same as group (2), but with dentin treated with 2.5% curcumin suspension for 60s before the application of adhesive; and (4) same as group (3), but with the use of a 20% vitamin C suspension instead of a curcumin suspension. Filtek Z350XT composite was built for all samples. Half of the samples in each group were subjected to thermocycling. Shear bond strength was measured using a universal testing machine. Scanning electron microscopy was used to investigate the dentinal surfaces after treatment.</jats:p></jats:sec><jats:sec><jats:title>Results:</jats:title><jats:p>Treatment with curcumin suspension preserved immediate and long-term bond strength. Conversely, treatment of etched dentin with vitamin C solution significantly reduced the immediate bond strength, but a significant improvement was observed after aging. SEM showed that both cross-linking agents resulted in narrowing or closing of the dentinal tubules, with an adhesive mode of failure.</jats:p></jats:sec><jats:sec><jats:title>Conclusion:</jats:title><jats:p>The application of curcumin or vitamin C suspension to acid-etched dentin resulted in different effects on immediate and long-term shear bond strength when using universal adhesives.</jats:p></jats:sec>