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Open AccessArticle

Physical Properties of an Ag-Doped Bioactive Flowable Composite Resin

1
Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA
2
Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Ihtesham ur Rehman
Materials 2015, 8(8), 4668-4678; https://doi.org/10.3390/ma8084668
Received: 17 February 2015 / Revised: 12 July 2015 / Accepted: 14 July 2015 / Published: 24 July 2015
(This article belongs to the Special Issue Dental Materials)
The aim of this work was to study the physical and antibacterial properties of a flowable resin composite incorporating a sol-gel derived silver doped bioactive glass (Ag-BGCOMP). The depth of the cure was calculated by measuring the surface micro-hardness for the top and bottom surfaces. The volumetric polymerization shrinkage was measured by recording the linear shrinkage as change in length, while the biaxial flexural strength was studied measuring the load at failure. The antibacterial properties of the samples were tested against Streptococcus mutans (S. mutans) and Lactobacillus casei (L. casei). The measured values were slightly decreased for all tested physical properties compared to those of control group (flowable resin composite without Ag-BG), however enhanced bacteria inhibition was observed for Ag-BGCOMP. Ag-BGCOMP could find an application in low stress-bearing areas as well as in small cavity preparations to decrease secondary caries. This work provides a good foundation for future studies on evaluating the effects of Ag-BG addition into packable composites for applications in larger cavity preparations where enhanced mechanical properties are needed. View Full-Text
Keywords: silver doped bioactive glass; flowable resin composite; depth of cure; biaxial flexural strength; polymerization shrinkage; Streptococcus mutans; Lactobacillus casei silver doped bioactive glass; flowable resin composite; depth of cure; biaxial flexural strength; polymerization shrinkage; Streptococcus mutans; Lactobacillus casei
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Kattan, H.; Chatzistavrou, X.; Boynton, J.; Dennison, J.; Yaman, P.; Papagerakis, P. Physical Properties of an Ag-Doped Bioactive Flowable Composite Resin. Materials 2015, 8, 4668-4678.

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