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ORIGINAL RESEARCH Table of Contents   
Year : 2020  |  Volume : 31  |  Issue : 4  |  Page : 589-592
Antibacterial activity of a glass ionomer containing silver nanoparticles against Streptococcus mutans and Streptococcus sanguinis


1 Department of Pediatrics, Faculty of Dentistry, Shahed University, Tehran, Iran
2 Department of Periodontics, Faculty of Dentistry, Shahed University, Tehran, Iran
3 Department of Microbiology, Faculty of Medicine, Shahed University, Tehran, Iran
4 Department of Operative Dentistry, Faculty of Dentistry, Shahed University, Tehran, Iran

Correspondence Address:
Dr. Rokhsareh Sadeghi
Department of Periodontics, Faculty of Dentistry, Shahed University, 39 Italia St., Vesal Ave. Tehran, 1417755351
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijdr.IJDR_115_18

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Aim: Nano-sized metal particles exhibit special biological, chemical, and physical properties. The aim of this study was to evaluate the effect of incorporating silver nanoparticles into a resin-modified glass ionomer (GI) on its antimicrobial property. Materials and Methods: Antibacterial action of GI samples containing 0, 40, 80 ppm silver nanoparticles against standard strains of Streptococcus sanguinis and Streptococcus mutans were assessed by agar diffusion and direct contact tests. Data were analyzed using analysis of variance and Duncan test (P < 0.05). Results: Agar diffusion test showed no bacterial inhibition zone, but direct contact test exhibited significant antimicrobial activity against S. sanguinis and S. mutans in resin containing 80 ppm of nanosilver. Conclusion: Incorporation of a certain amount of silver nanoparticles into GI can increase its antimicrobial activity compared to the original material.


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