Assessment of exposures and potential risks to the US adult population from wear (attrition and abrasion) of gold and ceramic dental restorations

Little has been published on the chemical exposures and risks of dental restorative materials other than from dental amalgam and composite resins. Here we provide the first exposure and risk assessment for gold (Au) alloy and ceramic restorative materials. Based on the 2001–2004 US National Health a...

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Bibliographic Details
Published in:Journal of exposure science & environmental epidemiology 2016-01, Vol.26 (1), p.70-77
Main Authors: Richardson, G Mark, Clemow, Scott R, Peters, Rachel E, James, Kyle J, Siciliano, Steven D
Format: Article
Language:English
Subjects:
692/700/1750
692/700/3032/3065
692/700/478/174
692/700/565/2194
Abrasion
Adult
Adults
Aged
Aged, 80 and over
Alloys
Attrition
Ceramics
Ceramics - analysis
Comminution
Composite materials
Dental alloys
Dental Amalgam - analysis
Dental amalgams
Dental materials
Dental Materials - analysis
Dental Restoration Wear
Dental restorative materials
Epidemiology
Exposure
Female
Gold
Gold - analysis
Humans
Lithium
Lithium - analysis
Male
Medicine
Medicine & Public Health
Middle Aged
Nutrition
original-article
Resins
Risk assessment
Risk Factors
Silver
Silver - analysis
Surveys
Teeth
Toxicity
United States
Wear
Young Adult
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Summary:Little has been published on the chemical exposures and risks of dental restorative materials other than from dental amalgam and composite resins. Here we provide the first exposure and risk assessment for gold (Au) alloy and ceramic restorative materials. Based on the 2001–2004 US National Health and Nutrition Examination Survey (NHANES), we assessed the exposure of US adults to the components of Au alloy and ceramic dental restorations owing to dental material wear. Silver (Ag) is the most problematic component of Au alloy restorations, owing to a combination of toxicity and proportional composition. It was estimated that adults could possess an average of four tooth surfaces restored with Au alloy before exceeding, on average, the reference exposure level (REL) for Ag. Lithium (Li) is the most problematic component of dental ceramics. It was estimated that adults could possess an average of 15 tooth surfaces restored with ceramics before exceeding the REL for Li. Relative risks of chemical exposures from dental materials decrease in the following order: Amalgam>Au alloys>ceramics>composite resins.
ISSN:1559-0631
1559-064X
DOI:10.1038/jes.2015.17