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Int J Environ Res Public Health. 2017 July; 14(7): 733.
Published online 2017 July 6. doi:  10.3390/ijerph14070733
PMCID: PMC5551171

Comment on Giuseppe Genchi et al. Mercury Exposure and Heart Diseases. Int. J. Environ. Res. Public Health 2017, 14, 74

Cenchi et al. [1] have recently published an article entitled “Mercury Exposure and Heart Diseases” that is published in Int. J. Environ. Res. Public Health 2017, 14, 74; doi:10.3390/ijerph14010074. In this article, the authors reviewed the toxicity of mercury and focused on the toxic effects on the cardiovascular system. Although the paper authored by Cenchi et al. is a well-structured article which can be considered a significant contribution in this field, it has some shortcomings. Over the past several years, we have shown that when dental amalgam fillings are exposed to electromagnetic fields (EMFs) produced by magnetic resonance imaging (MRI) or those generated by other sources such as mobile phones, the level of mercury released from dental amalgam restorations can be significantly increased [2,3]. It is worth noting that rapidly increasing advances in modern technologies such as telecommunication and the exponential rise in the use of wireless systems have drastically increased the human exposure to different sources of EMFs (mobile phones, mobile base stations, cordless phones, Wi-Fi routers, radio and TV broadcasting, etc.). Studies performed on microleakage of amalgam have further confirmed the findings obtained in our studies on EMF-induced accelerated mercury release [4,5]. Furthermore, Kursun et al. have also demonstrated that exposure to X-rays (an energetic part of the electromagnetic radiation spectrum) can increase the mercury release from amalgam fillings [6]. Although the mercury levels which normally can be released from amalgam fillings, even in the presence of EMFs, are not high enough to cause toxicity, a hypersensitive subpopulation, pregnant women, and children may be affected by this phenomenon. These findings have recently been reviewed by Mortazavi and Mortazavi [7]. Based on the substantial evidence provided above, a shortcoming of this review conducted by Cenchi et al. [1] comes from this point that these researchers have not considered the substantial evidence which indicates the role of exposure to EMFs on the release of mercury from dental amalgam restorations.

Conflicts of Interest

Conflicts of Interest

The authors declare no conflict of interest.

References

1. Genchi G., Sinicropi M.S., Carocci A., Lauria G., Catalano A. Mercury Exposure and Heart Diseases. Int. J. Environ. Res. Public Health. 2017;14:74 doi: 10.3390/ijerph14010074. [PMC free article] [PubMed] [Cross Ref]
2. Mortazavi S., Neghab M., Anoosheh S., Bahaeddini N., Mortazavi G., Neghab P., Rajaeifard A. High-field MRI and mercury release from dental amalgam fillings. Int. J. Occup. Environ. Med. 2014;5:101–105. [PubMed]
3. Mortazavi S., Daiee E., Yazdi A., Khiabani K., Kavousi A., Vazirinejad R., Behnejad B., Ghasemi M., Mood M.B. Mercury release from dental amalgam restorations after magnetic resonance imaging and following mobile phone use. Pak. J. Biol. Sci. 2008;11:1142–1146. doi: 10.3923/pjbs.2008.1142.1146. [PubMed] [Cross Ref]
4. Yilmaz S., Misirlioglu M. The effect of 3 T MRI on microleakage of amalgam restorations. Dentomaxillofac Radiol. 2013;42 doi: 10.1259/dmfr.20130072. [PMC free article] [PubMed] [Cross Ref]
5. Shahidi S.H., Bronoosh P., Alavi A.A., Zamiri B., Sadeghi A.R., Bagheri M.H., Javadpour S. Effect of magnetic resonance imaging on microleakage of amalgam restorations: An in vitro study. Dentomaxillofac Radiol. 2009;38:470–474. doi: 10.1259/dmfr/30077669. [PubMed] [Cross Ref]
6. Kursun S., Öztas B., Atas H., Tastekin M. Effects of X-rays and magnetic resonance imaging on mercury release from dental amalgam into artificial saliva. Oral Radiol. 2014;30:142–146. doi: 10.1007/s11282-013-0154-0. [Cross Ref]
7. Mortazavi G., Mortazavi S.M. Increased mercury release from dental amalgam restorations after exposure to electromagnetic fields as a potential hazard for hypersensitive people and pregnant women: Reviews on environmental health. Rev. Environ. Health. 2015;30:287–292. doi: 10.1515/reveh-2015-0017. [PubMed] [Cross Ref]

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