The tooth‐amalgam interaction

Sarkar, N. K.; Fuys, R. A.; Schoenfeld, Charles M.; Armstrong, L. M.; Stanford, John W.

doi:10.1111/j.1365-2842.1981.tb00514.x

Cited by 13 publications

(6 citation statements)

References 5 publications

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“…The patterns of elements found in this investigation are, in general, similar to those reported in similar studies (Wei and Ingram, 1969;Holland and Asgar, 1974;Sarkar et al, 1981). However, the methods and results of these latter investigations varied slightly from those of the present study.…”

Section: Discussionsupporting

confidence: 83%

“…7 of Fe in seal formation is unknown. Sarkar et al (1981) found Hg in various amounts on all corrosion surfaces examined. In the present investigation, Hg was absent from the seal material embedded in the replicas.…”

Section: Discussionmentioning

confidence: 98%

“…They made no mention of Ca being present in any of the seals analyzed. Finally, Sarkar et al (1981) investigated the morphology and chemical nature of the corrosion products formed in an in vitro study of extracted teeth restored with different amalgam alloys and immersed in I % NaCI at 370C for nine months. Of note is the fact that sulfur was absent in all the marginal seals examined, even though the tooth itself is a source of sulfur (Jenkins, 1978).…”

Section: Discussionmentioning

confidence: 99%

“…One method of describing the marginal seal is through the identification of elements within the seal by means of x-ray micro-analysis (Wei and Ingram, 1969;Holland and Asgar, 1974;Sarkar et at., 1981). However, studies so far have been on bulk specimens where electron-beam scattering on and in the sample can cause generation of spurious x-rays from material bordering the seal.…”

Section: Introductionmentioning

confidence: 99%

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Elements in Marginal Seals at Amalgam-Tooth Interfaces

1986

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X-ray micro-analysis was used to determine the elemental composition of the tooth, amalgam, and base material of ten aged, amalgam-restored, posterior teeth after they had been fractured across the amalgam-tooth interface. Subsequently, replicas were used to remove marginal seal material from each interface for examination by x-ray micro-analysis. The results show that P and Sn were present in all marginal seal material analyzed. Ca, Cl, Cu, Fe, S, and Zn were present in the marginal seals of various numbers of specimens.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Elements in Marginal Seals at Amalgam-Tooth Interfaces

1986

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“…In these studies. 20,24,[29][30][31][32][33][34][35][36] Sn was consistently found in marginal gaps. In a number of these studies Zn was also identified.…”

Section: Composition Of Marginal Sealmentioning

confidence: 99%

Penetration of amalgam constituents into dentine

Scholtanus

Özcan

Huysmans

2009

Journal of Dentistry

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OBJECTIVES: Amalgam restorations are replaced by adhesively placed composite resin restorations at an increasing rate. After the removal of amalgam dentine often shows marked dark discoloration that is attributed to the penetration of corrosion products from overlying amalgams. It is questioned whether penetration of metals into dentine affects the dentine as a substrate for adhesive procedures. This study has been performed to clarify the origin of dark discoloration of dentine by metals from amalgam with special regards to corrosion products. METHODS: A review of the literature has been performed using Medline database. As keywords dentine and amalgam, subsequently combined with penetration, interface, crevice, interaction, corrosion, were used. This was followed up by extensive hand search using reference lists of relevant articles. RESULTS: Data in the literature have been gathered from extracted amalgam filled teeth and from artificially aged amalgam filled teeth. Corrosion studies have been performed in vivo aged teeth as well as in vitro. Sn is the main element, followed by Zn and Cu, that is consistently found in dentine underneath amalgam, as well as in amalgam corrosion products and in marginal seal deposits. Penetration of elements from amalgam has only been observed in discolored and in demineralised dentine. CONCLUSIONS: Darkly discolored dentine as found underneath amalgam restorations contains amalgam corrosion products and is demineralised. Therefore it must be considered a different substrate for clinical procedures than sound dentine. Penetration of Amalgam Constituents into Dentin ABSTRACTObjective: Amalgam restorations are replaced by adhesively placed composite resin restorations at an increasing rate. After removal of amalgam, dentin often shows marked dark discoloration that is attributed to penetration of corrosion products from overlying amalgams. It is questioned if penetration of metals into dentin effects the dentin as a substrate for adhesive procedures. This study has been performed to clarify the origin of dark discoloration of dentin by metals from amalgam with special regards to corrosion products. Methods:A review of the literature has been performed using Medline database. As keywords dentin and amalgam, subsequently combined with penetration, interface, crevice, interaction, 2 corrosion, were used. This was followed up by extensive hand search using reference lists of relevant articles.Results: Data in the literature have been gathered from extracted amalgam filled teeth and from artificially aged amalgam filled teeth. Corrosion studies have been performed in vivo aged teeth as well as in vitro. Sn is the main element, followed by Zn and Cu, that is consistently found in dentin underneath amalgam, as well as in amalgam corrosion products and in marginal seal deposits. Penetration of elements from amalgam has only been observed in discoloured and in demineralised dentin. Conclusions:Darkly discoloured dentin as found underneath amalgam restorations contains amalgam cor...

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The use of extraction replicas in scanning electron microscopy for the elemental analysis of marginal seals

Witcomb

Jodaikin

Grossman

1987

J. Biomed. Mater. Res.

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Elemental analysis of marginal seal material on 20 bulk samples of occlusally restored teeth have shown that, generally, more elements were detected in the seal material analyzed on the bulk restoration or fractured tooth surfaces than when such material was extracted using a nitrocellulose replica prior to analysis. No mercury was detected in any of the extracted seal material and only three of the replica specimens contained silver. This implies that the technique of using extraction replicas to remove material from the amalgam-tooth interface for subsequent x-ray microanalysis can provide an accurate elemental composition. The details of fabrication and the advantages of using high resolution nitrocellulose replicas for extracting marginal seal material from teeth for subsequent x-ray microanalysis are described.

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The tooth‐amalgam interaction

Cited by 13 publications

References 5 publications

Elements in Marginal Seals at Amalgam-Tooth Interfaces

Elements in Marginal Seals at Amalgam-Tooth Interfaces

Penetration of amalgam constituents into dentine

The use of extraction replicas in scanning electron microscopy for the elemental analysis of marginal seals

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