Dynamic Viscoelastic Characterization of Bulk-fill Resin-based Composites and Their Conventional Counterparts
This study compared the viscoelastic properties of restorative and flowable bulk-fill resin-based composites (RBCs) with their conventional counterparts and evaluated the impact of aqueous solutions on viscoelastic properties. The materials examined included three conventional RBCs (Filtek Z350, Tet...
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my.um.eprints.257732021-02-26T03:01:25Z http://eprints.um.edu.my/25773/ Dynamic Viscoelastic Characterization of Bulk-fill Resin-based Composites and Their Conventional Counterparts Yap, Adrian U-Jin Eweis, Ahmed Hesham Yahya, Noor Azlin RK Dentistry This study compared the viscoelastic properties of restorative and flowable bulk-fill resin-based composites (RBCs) with their conventional counterparts and evaluated the impact of aqueous solutions on viscoelastic properties. The materials examined included three conventional RBCs (Filtek Z350, Tetric N Ceram, and Beautifil II), three restorative bulk-fill RBCs (Filtek Bulk-Fill Restorative, Tetric N Ceram Bulk-Fill, and Beautifil Bulk-Fill Restorative) in addition to three flowable bulk-fill RBCs (Filtek Bulk-Fill Flowable, Tetric N Flow Bulk-Fill, and Beautifil Bulk-Fill Flowable). Beam-shaped specimens (123232 mm) were fabricated using customized stainless-steel molds, finished, and measured. The specimens were randomly divided into four groups and conditioned in air (control), artificial saliva, 0.02 N citric acid, and 50% ethanol-water solution for seven days at 378C. They were then subjected to dynamic mechanical analysis (n = 10) in flexure mode at 378C with a frequency of 0.1 to 10 Hz. Storage modulus, loss modulus, and loss tangent data were subjected to statistical analysis using one-way analysis of variance/Tukey post hoc test at a significance level of a = 0.05. Viscoelastic properties of the RBCs were found to be product and conditioning medium dependent. For most RBCs, exposure to aqueous solutions, particularly an ethanol-water solution, degraded viscoelastic properties. With the exception of Filtek Bulk-Fill Restorative, bulk-fill restorative and flowable RBCs generally had significantly lower storage and loss modulus than their conventional counterparts regardless of conditioning medium. Conventional RBCs are thus favored over their bulk-fill counterparts, particularly for high-stress-bearing areas. © 2020 Indiana University School of Dentistry. All rights reserved. Indiana University School of Dentistry 2020 Article PeerReviewed Yap, Adrian U-Jin and Eweis, Ahmed Hesham and Yahya, Noor Azlin (2020) Dynamic Viscoelastic Characterization of Bulk-fill Resin-based Composites and Their Conventional Counterparts. Operative Dentistry, 45 (2). pp. 173-182. ISSN 0361-7734 https://doi.org/10.2341/19-005-L doi:10.2341/19-005-L |
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RK Dentistry Yap, Adrian U-Jin Eweis, Ahmed Hesham Yahya, Noor Azlin Dynamic Viscoelastic Characterization of Bulk-fill Resin-based Composites and Their Conventional Counterparts |
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This study compared the viscoelastic properties of restorative and flowable bulk-fill resin-based composites (RBCs) with their conventional counterparts and evaluated the impact of aqueous solutions on viscoelastic properties. The materials examined included three conventional RBCs (Filtek Z350, Tetric N Ceram, and Beautifil II), three restorative bulk-fill RBCs (Filtek Bulk-Fill Restorative, Tetric N Ceram Bulk-Fill, and Beautifil Bulk-Fill Restorative) in addition to three flowable bulk-fill RBCs (Filtek Bulk-Fill Flowable, Tetric N Flow Bulk-Fill, and Beautifil Bulk-Fill Flowable). Beam-shaped specimens (123232 mm) were fabricated using customized stainless-steel molds, finished, and measured. The specimens were randomly divided into four groups and conditioned in air (control), artificial saliva, 0.02 N citric acid, and 50% ethanol-water solution for seven days at 378C. They were then subjected to dynamic mechanical analysis (n = 10) in flexure mode at 378C with a frequency of 0.1 to 10 Hz. Storage modulus, loss modulus, and loss tangent data were subjected to statistical analysis using one-way analysis of variance/Tukey post hoc test at a significance level of a = 0.05. Viscoelastic properties of the RBCs were found to be product and conditioning medium dependent. For most RBCs, exposure to aqueous solutions, particularly an ethanol-water solution, degraded viscoelastic properties. With the exception of Filtek Bulk-Fill Restorative, bulk-fill restorative and flowable RBCs generally had significantly lower storage and loss modulus than their conventional counterparts regardless of conditioning medium. Conventional RBCs are thus favored over their bulk-fill counterparts, particularly for high-stress-bearing areas. © 2020 Indiana University School of Dentistry. All rights reserved. |
format |
Article |
author |
Yap, Adrian U-Jin Eweis, Ahmed Hesham Yahya, Noor Azlin |
author_facet |
Yap, Adrian U-Jin Eweis, Ahmed Hesham Yahya, Noor Azlin |
author_sort |
Yap, Adrian U-Jin |
title |
Dynamic Viscoelastic Characterization of Bulk-fill Resin-based Composites and Their Conventional Counterparts |
title_short |
Dynamic Viscoelastic Characterization of Bulk-fill Resin-based Composites and Their Conventional Counterparts |
title_full |
Dynamic Viscoelastic Characterization of Bulk-fill Resin-based Composites and Their Conventional Counterparts |
title_fullStr |
Dynamic Viscoelastic Characterization of Bulk-fill Resin-based Composites and Their Conventional Counterparts |
title_full_unstemmed |
Dynamic Viscoelastic Characterization of Bulk-fill Resin-based Composites and Their Conventional Counterparts |
title_sort |
dynamic viscoelastic characterization of bulk-fill resin-based composites and their conventional counterparts |
publisher |
Indiana University School of Dentistry |
publishDate |
2020 |
url |
http://eprints.um.edu.my/25773/ https://doi.org/10.2341/19-005-L |
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1692992296991064064 |
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13.18916 |