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KMID : 1020220140140030425
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Journal of Korean Society of Dental Hygiene
2014 Volume.14 No. 3 p.425 ~ p.430
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Correlation between amalgam restorations and urinary mercury level in children for 1 year
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Baek Hye-Jin
Jeong Seong-Hwa
Choi Youn-Hee
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Abstract
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Objectives : The purpose of this study is to investigate the correlation between amalgam restorations and urinary mercury levels in children for 1 year. Amalgam restoration has been widely used for over 200 years. But released mercury from amalgam can increase the concentration of mercury in the body.
Methods : The subjects were 463 elementary school children. Oral examination, urine sampling, and questionnaire survey were performed at baseline and after 1 year.
Results : Amalgam restoration increased the urinary mercury level to 0.55±0.13 ㎍/g creatinine. In the regression analysis, variation of urinary mercury excretion were positively associated with amalgam surfaces and fish consumption.
Conclusions : Small amount of mercury release from amalgam restoration was closely associated with increasing urinary mercury level.
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KEYWORD
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amalgam restoration, children, urinary mercury level
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