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. 2013 Fall;8(4):166-70.
Epub 2013 Oct 7.

Antimicrobial Efficacy of Mineral Trioxide Aggregate with and without Silver Nanoparticles

Mohammad Samiei  1 , Mohammad Aghazadeh, Mehrdad Lotfi, Sahar Shakoei, Zahra Aghazadeh, Seyyed Mahdi Vahid Pakdel
Affiliations

Antimicrobial Efficacy of Mineral Trioxide Aggregate with and without Silver Nanoparticles

Mohammad Samiei et al. Iran Endod J. 2013 Fall.

Abstract

Introduction: Most current root-end filling materials do not provide a perfect seal. Thus, a microscopic space is likely to exist in the interface between walls of the root-end cavity and filling material, which allows microorganisms and their products to penetrate. In addition to good sealing ability and biocompatibility, root-end filling materials should ideally have some antimicrobial activity. Therefore, this in vitro study aimed to evaluate the antimicrobial properties of Angelus white mineral trioxide aggregate (MTA) and the mixture of MTA with silver nanoparticles (1% weight; MTA/SN).

Materials and methods: Antimicrobial properties of MTA and MTA/SN were tested by agar diffusion technique against Enterococcus faecalis, Pseudomonas aeruginosa, Staphylococcus aureus, and Candida albicans. The microbial inhibition zones around the materials were measured by a caliper with 0.1-mm accuracy. Student's t-test was used for comparison between the two groups in normal data distribution and Man-Whitney U test for non-normal distribution.

Results: Student's t-test revealed that for E. faecalis, C. albicans, and P. aeruginosa, microbial inhibition zone of MTA/SN was significantly greater than that of MTA (P = 0.000). Mann-Whitney U test indicated no significant difference between the effect of MTA and MTA/SN on S. aureus (P > 0.05).

Conclusion: Based on the results of this study, adding silver nanoparticles to MTA improved its antimicrobial efficacy.

Keywords: Antibacterial Agents; Antifungal Agents; Mineral Trioxide Aggregate; Nanoparticles; Silver.

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Conflict of interest statement

Conflict of Interest:

‘None declared’.

Figures

Figure 1.
Figure 1.. Box-plots of growth inhibition diameters against different bacteria (E. faecalis, C. albicans, P. aeruginosa, S. aureus)
Figure 2.
Figure 2.. Microbial Inhibition zones; A. MTA against E. faecalis; B. MTA/SN against E. faecalis; C. MTA against C. albicans; D. MTA/SN against C. albicans; E. MTA against P. aeruginosa; F. MTA/SN against P. aeruginosa; G. MTA against S. aureus; H. MTA/SN against S. aureus.
See this image and copyright information in PMC

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