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Physical Properties of an Ag-Doped Bioactive Flowable Composite Resin
Hiba Kattan1, Xanthippi Chatzistavrou2, James Boynton3
1Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA. kattan@umich.edu.
Materials (Basel, Switzerland)
|August 11, 2017
Summary
This study investigated a new dental composite with silver-doped bioactive glass (Ag-BGCOMP), finding it slightly reduced physical properties but significantly enhanced antibacterial effects against common oral bacteria.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Nanotechnology
Background:
- Flowable resin composites are widely used in dental restorations.
- Secondary caries remain a significant challenge in restorative dentistry.
- Incorporating antimicrobial agents into dental composites can inhibit bacterial growth.
Purpose of the Study:
- To evaluate the physical and antibacterial properties of a novel flowable resin composite containing silver-doped bioactive glass (Ag-BGCOMP).
- To assess the potential of Ag-BGCOMP in preventing secondary caries.
Main Methods:
- Sol-gel synthesis of silver-doped bioactive glass (Ag-BG).
- Incorporation of Ag-BG into a flowable resin composite (Ag-BGCOMP).
- Measurement of depth of cure (micro-hardness), volumetric polymerization shrinkage, and biaxial flexural strength.
- Antibacterial testing against Streptococcus mutans and Lactobacillus casei.
Main Results:
- Ag-BGCOMP exhibited slightly decreased physical properties (cure depth, shrinkage, flexural strength) compared to the control composite.
- Significantly enhanced antibacterial inhibition was observed for Ag-BGCOMP against S. mutans and L. casei.
- The addition of Ag-BG did not compromise the basic physical integrity of the composite.
Conclusions:
- Ag-BGCOMP demonstrates promising antibacterial properties, making it suitable for low stress-bearing areas and small cavity preparations to combat secondary caries.
- Further research into Ag-BG incorporation in packable composites is warranted for applications requiring higher mechanical strength.
