Mortazavi Ghazal, Mortazavi S M J
Rev Environ Health. 2015;30(4):287-92. doi: 10.1515/reveh-2015-0017.
Over the past decades, the use of common sources of electromagnetic fields such as Wi-Fi routers and mobile phones has been increased enormously all over the world. There is ongoing concern that exposure to electromagnetic fields can lead to adverse health effects. It has recently been shown that even low doses of mercury are capable of causing toxicity. Therefore, efforts are initiated to phase down or eliminate the use of mercury amalgam in dental restorations. Increased release of mercury from dental amalgam restorations after exposure to electromagnetic fields such as those generated by MRI and mobile phones has been reported by our team and other researchers. We have recently shown that some of the papers which reported no increased release of mercury after MRI, may have some methodological errors. Although it was previously believed that the amount of mercury released from dental amalgam cannot be hazardous, new findings indicate that mercury, even at low doses, may cause toxicity. Based on recent epidemiological findings, it can be claimed that the safety of mercury released from dental amalgam fillings is questionable. Therefore, as some individuals tend to be hypersensitive to the toxic effects of mercury, regulatory authorities should re-assess the safety of exposure to electromagnetic fields in individuals with amalgam restorations. On the other hand, we have reported that increased mercury release after exposure to electromagnetic fields may be risky for the pregnant women. It is worth mentioning that as a strong positive correlation between maternal and cord blood mercury levels has been found in some studies, our findings regarding the effect of exposure to electromagnetic fields on the release of mercury from dental amalgam fillings lead us to this conclusion that pregnant women with dental amalgam fillings should limit their exposure to electromagnetic fields to prevent toxic effects of mercury in their fetuses. Based on these findings, as infants and children are more vulnerable to mercury exposures, and as some individuals are routinely exposed to different sources of electromagnetic fields, we possibly need a paradigm shift in evaluating the health effects of amalgam fillings.
在过去几十年里，诸如无线路由器和手机等常见电磁场源在全球的使用量大幅增加。人们一直担心暴露于电磁场会对健康产生不良影响。最近有研究表明，即使是低剂量的汞也具有毒性。因此，已开始努力逐步减少或消除牙科修复中汞合金的使用。我们团队和其他研究人员报告称，在暴露于如磁共振成像（MRI）和手机产生的电磁场后，牙科汞合金修复体中汞的释放量会增加。我们最近发现，一些报告称MRI后汞释放量未增加的论文可能存在一些方法学上的错误。尽管以前认为牙科汞合金释放的汞量不会有害，但新的研究结果表明，即使是低剂量的汞也可能具有毒性。基于最近的流行病学研究结果，可以认为牙科汞合金填充物释放的汞的安全性值得怀疑。因此，由于一些人可能对汞的毒性过敏，监管机构应重新评估有汞合金修复体的个体暴露于电磁场的安全性。另一方面，我们报告称，暴露于电磁场后汞释放量增加对孕妇可能有风险。值得一提的是，一些研究发现母体和脐带血汞水平之间存在很强的正相关，我们关于电磁场暴露对牙科汞合金填充物中汞释放影响的研究结果使我们得出这样的结论：有牙科汞合金填充物的孕妇应限制其电磁场暴露，以防止胎儿受到汞的毒性影响。基于这些发现，由于婴儿和儿童更容易受到汞暴露的影响，而且一些人经常暴露于不同的电磁场源，我们可能需要在评估汞合金填充物对健康的影响方面进行范式转变。
