Influence of liquid films on mercury vapor loss from dental amalgam

Mahler, David B.; Adey, J; Simms, Lisa E.; Marek, M.

doi:10.1016/s0109-5641(01)00070-7

Cited by 11 publications

(2 citation statements)

References 20 publications

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“…The noncoated amalgam released on average 90 times more mercury than amalgam coated with Copalite. Lyttle and Bowden 22 have also noticed a reduction in mercury release in amalgam, attributing it to the passive tarnish layer, whereas Mahler et al 23 have found that liquid films can also retard mercury release from amalgam restorations.…”

Section: Discussionmentioning

confidence: 99%

Influence of dental biofilm on release of mercury from amalgam exposed to carbamide peroxide

2003

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Tooth bleaching is a popular procedure in modern aesthetic dentistry. Bleaching agents may affect amalgam restorations by altering the release of mercury. The aim of this study was to explore the effect of biofilm-coated amalgam restorations on the release of mercury in the presence of carbamide peroxide. Samples of SDI and Valliant amalgams were submerged for either 14 days or 7 months in buffered KCl after which they were coated with saliva, bacteria, and polysaccharides. The samples were exposed to 10% carbamide peroxide (CP) for 24 h. The amount of mercury released was examined for 120 h. Results showed that most of mercury release occurred within the first 24 h, after which the release rate decreased sharply. After 120 h the release of mercury from the tested samples was minimal and similar to the control group. The presence of biofilm coating on the amalgam samples did not induce the release of mercury but tended to reduce mercury release into the surrounding environment. CP induces the release of mercury from amalgam samples. However, the presence of biofilm did not prevent large amounts of mercury release from amalgam coated with biofilms and exposed to CP. This study indicates that dental biofilm may retard the release of mercury from amalgam restorations.

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Section: Discussionmentioning

confidence: 99%

Influence of dental biofilm on release of mercury from amalgam exposed to carbamide peroxide

2003

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“…Lyttle and Bowden [ 16 ] reported that using an inactive layer of tarnish for coating, reduces the release of mercury from amalgam, and Mahler det al [ 17 ] stated that application of a liquid film as a coating can decrease mercury release from this metal [ 17 ]. The results of a study carried out by Steinberg [ 18 ] showed that when using bleaching materials, the mercury released from an amalgam, which was coated with a biofilm, was less than that released from the uncoated amalgams.…”

Section: Discussionmentioning

confidence: 99%

Effect of Polishing and Universal Bonding Application on Mercury Release from Aged Amalgam after Exposure to Bleaching Agents

Feiz,

Jafari,

Ghasemi

2024

fid

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Objectives: Teeth bleaching is an accepted and modern treatment in cosmetic dentistry. Bleaching agents may affect amalgam restorations and increase mercury release; therefore, patients are at increased risk of mercury exposure in the body. The aim of this study was to investigate the effect of polishing and universal bonding application on mercury release from aged amalgams exposed to bleaching. Materials and Methods: In this in-vitro experimental study, 64 dental amalgam specimens with dimensions of 3×5×10 were prepared and divided into two experimental and control groups. Each group was further divided into 4 subgroups and received one of the following treatments: no intervention, surface bonding, polishing, or polishing and surface bonding. Subsequently, the samples were immersed in bleaching agent containing 7% hydrogen peroxide and the amount of mercury released after 96h was measured. The results were analyzed by two-way ANOVA and Tukey post hoc tests (α≤0.05). Results: The results showed that the type of solution (P<0.05) and surface treatment (P<0.001) significantly affected the level of mercury release. However, there was no significant interaction between surface treatment methods in the bleaching group and those in the phosphate buffer group (P=0.621). Conclusion: Bleaching agents were found to enhance mercury release from dental amalgam. The application of polishing and universal bonding on amalgam surfaces exhibited significant effects on the reduction of the mercury release.

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Biomaterials for Dental Applications

Bhaduri

2009

Biomedical Materials

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Influence of liquid films on mercury vapor loss from dental amalgam

Cited by 11 publications

References 20 publications

Influence of dental biofilm on release of mercury from amalgam exposed to carbamide peroxide

Influence of dental biofilm on release of mercury from amalgam exposed to carbamide peroxide

Effect of Polishing and Universal Bonding Application on Mercury Release from Aged Amalgam after Exposure to Bleaching Agents

Biomaterials for Dental Applications

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