Abstract
Background Dental amalgam is a widely used restorative material that is prepared by triturating mercury with a metal alloy. Mercury vapor is released during placement and removal of the restoration. It is also released during chewing and brushing. A few studies have reported that mercury is also released on exposure to MRI.Objectives This was an in vitro cross-sectional study. In this study we aimed to evaluate mercury release from dental amalgam after exposure to magnetic resonance imaging MRI.Methods Seven blocks of amalgam measuring about 5times5times5 mm were prepared. Each block was placed in 20 mL of artificial saliva for 48 hours and mercury analysis was performed using Inductive coupled plasma mass spectrometry before and after exposure to MRI. Students lsquotrsquo test was used for statistical analysis.Results Mean mercury levels before and after exposure to MRI were 4.74 ppb and 8.68 ppb respectively. Thus there was a significant increase in release of mercury after MRI. Conclusion It can be concluded that it is advisable to use non-mercury containing restorative materials in dentistry.
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