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Hybrid Layer Thickness and Resin Tags Penetration of two Universal Adhesives Incorporated with Ascorbic Acid Coated Superparamagnetic Nanoparticles Subjected to External Magnetic Field
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| Author:
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MOHAMMED A. FADHIL, ABDULLA M.W. AL-SHAMMA
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| Abstract:
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Purpose (Aim): To evaluate the hybrid layer thickness (HLC) and resin tags penetration depth (RTPD) of two universal adhesives incorporated with 2%-ascorbic acid coated Fe3O4 nanoparticles subjected to external magnetic field in comparison to their control non-incorporated adhesives.
Settings and Design: An invitro scanning electron microscopy (SEM) study.
Materials and methods: Thirty-two freshly extracted third molar teeth were decuspated exposing flat occlusal dentinal surface to receive composite restoration. The teeth were divided randomly into four groups, i.e., All Bond Universal non-incorporated (group I), All Bond Universal 2% incorporated (group II), Prime&Bond universal non-incorporated (group III), and Prime&Bond universal 2% incorporated (group IV). Groups II and IV subjected to 1min external magnetic force before curing. All the specimens were sectioned mesiodistally, then decalcified, deproteinized, and finally observed under scanning electron microscope for hybrid-layer and resin-tags measurements using digital image analysis software.
Statistical analysis used: Statistical analysis was conducted using independent variable t-test by the IBM-SPSS software version 22.
Results: The 2% incorporated universal adhesives subjected to 1min magnetic field showed significantly higher (p<0.05) average hybrid layer thickness and resin tags penetration depth values in comparison to the control groups. The 2% incorporated Prime&Bond universal group showed significantly higher values in comparison to the 2% incorporated All Bond universal group.
Conclusions: Incorporation of ascorbic acid coated magnetite nanoparticles into universal adhesives significantly increased the hybrid-layer thickness and resin-tags penetration depth in response to magnetic field when compared to the control groups.
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| Keyword:
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Ascorbic acid (Vitamin C), Superparamagnetic Magnetite nanoparticles, magnetic field, hybrid layer, resin tags.
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| EOI:
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-
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| DOI:
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https://doi.org/10.31838/ijpr/2020.SP1.238
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