Results 221 to 230 of about 27,514 (274)
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Pharmacology & Toxicology, 1992
Abstract: The mercury concentrations in blood (HgB) and urine (HgU) samples, and in exhaled air (HgAir) were measured in 147 individuals from an urban Norwegian population, using cold vapour atomic absorption spectrometry. The study aimed to estimate the mercury exposure from the dental restorations, by correlating the data to the presence of amalgam ...
Erik Bye +4 more
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Abstract: The mercury concentrations in blood (HgB) and urine (HgU) samples, and in exhaled air (HgAir) were measured in 147 individuals from an urban Norwegian population, using cold vapour atomic absorption spectrometry. The study aimed to estimate the mercury exposure from the dental restorations, by correlating the data to the presence of amalgam ...
Erik Bye +4 more
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Nature, 1972
DENTAL amalgam is incorporated into about 80% of all dental restorations. It is prepared by grinding or triturating a silver–tin alloy (Ag3Sn, the γ phase) with mercury in the proportions 1 : 1 or 5 : 6 of alloy to mercury. The setting reaction of dental amalgam has been studied by many workers1–4 and is now accepted to be
J.A. von Fraunhofer, P.J. Staheli
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DENTAL amalgam is incorporated into about 80% of all dental restorations. It is prepared by grinding or triturating a silver–tin alloy (Ag3Sn, the γ phase) with mercury in the proportions 1 : 1 or 5 : 6 of alloy to mercury. The setting reaction of dental amalgam has been studied by many workers1–4 and is now accepted to be
J.A. von Fraunhofer, P.J. Staheli
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European Journal of Oral Sciences, 1975
abstract— The steady‐state creep rates of dental amalgams were measured and the creep rates were correlated with the microstructure of the amalgams. The influence of manipulation variables on creep rate and microstructure was evaluated. The samples were either mechanically or hand triturated, hand condensed, and stored at 20°C for 7 d.
S. E. SöRENSEN, S. Espevik
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abstract— The steady‐state creep rates of dental amalgams were measured and the creep rates were correlated with the microstructure of the amalgams. The influence of manipulation variables on creep rate and microstructure was evaluated. The samples were either mechanically or hand triturated, hand condensed, and stored at 20°C for 7 d.
S. E. SöRENSEN, S. Espevik
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Preparation of a dental amalgam alloy from dental amalgam waste [PDF]
Journal of Materials Science Letters, 1984 Amalgam is universally the most used material for dental appliances. It is the result of mixing mercury with a silver-tin alloy. Dental amalgam contains about 50% mercury, 35% silver and 15% tin. Moreover it can contain smaller quantities of other substances such as copper and zinc.
F. Desmet +3 more
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Journal of Dentistry, 1986
A recently published British Standard specification for dental amalgam alloy (BS 2938:1985) departs considerably from the previous standard published in 1961. In order to assess amalgam alloys in accordance with the new standard, it was necessary to construct several pieces of equipment.
P A Jones +3 more
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A recently published British Standard specification for dental amalgam alloy (BS 2938:1985) departs considerably from the previous standard published in 1961. In order to assess amalgam alloys in accordance with the new standard, it was necessary to construct several pieces of equipment.
P A Jones +3 more
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Advances in Dental Research, 1992
The goal of this presentation is to describe the material as it is used clinically, explain why small quantities of Hg can be released, and suggest ideas for amalgams that do not release mercury. A set amalgam is a dynamic material that undergoes many microstructural changes during clinical use, related to both the elevated temperature and corrosion ...
Sally J. Marshall, Grayson W. Marshall
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The goal of this presentation is to describe the material as it is used clinically, explain why small quantities of Hg can be released, and suggest ideas for amalgams that do not release mercury. A set amalgam is a dynamic material that undergoes many microstructural changes during clinical use, related to both the elevated temperature and corrosion ...
Sally J. Marshall, Grayson W. Marshall
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Amalgamation mechanism in dental amalgam alloys
Journal of Materials Science, 1987Model experiments to explore the amalgation mechanism in conventional Ag3Sn and high copper single-composition dental alloys have been conducted by rotating alloy roda in liquid mercury at different speeds and for different durations. After removing the rod from the mercury, the vacuum volatilization technique was used to accelerate the supersaturation
K.H. Lee +2 more
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Journal of Oral Rehabilitation, 1979
SummaryThe relationship between microstructure and physical and electro‐chemical properties of copper‐containing dental amalgams has been discussed in an attempt to understand the role of copper in currently used dental amalgams.
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SummaryThe relationship between microstructure and physical and electro‐chemical properties of copper‐containing dental amalgams has been discussed in an attempt to understand the role of copper in currently used dental amalgams.
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Dental Amalgam Stabilization by Selective Interfacial Amalgamation
Biomaterials, Medical Devices, and Artificial Organs, 1976The purpose of this investigation was to explore the feasibility of enhancing the electrochemical stability of dental amalgam restorations by a process of "selective interfacial amalgamation." If dental amalgam restorations can be selectively alloyed at the tooth-amalgam interface, to a minor thickness as compared with the dimensions of the bulk ...
F. K. Smith +2 more
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The Journal of the American Dental Association, 1991
This paper looks at the issues of the current amalgam controversy: the daily dose of mercury from amalgam, hypersensitivity to mercury, claims of adverse effects from amalgam mercury and alleged overnight "cures." In addition, the toxicity and allergenicity of the proposed alternative materials are examined with the same kind of scrutiny applied by the
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This paper looks at the issues of the current amalgam controversy: the daily dose of mercury from amalgam, hypersensitivity to mercury, claims of adverse effects from amalgam mercury and alleged overnight "cures." In addition, the toxicity and allergenicity of the proposed alternative materials are examined with the same kind of scrutiny applied by the
openaire +3 more sources