Potentials of and currents between dental metallic restorations

Bergman, Maud; Ginstrup, Olle; Nilsson, Bo

doi:10.1111/j.1600-0722.1982.tb00754.x

Cited by 17 publications

(16 citation statements)

References 7 publications

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“…It is interesting to note that the breakdown potentials of the present alloys were all above 1100 mV (SCE). From their in vivo study of 243 restorations from 115 people, Bergman, Ginstrup & Nilsson (1982) have found that the corrosion potentials in the oral enviroment ranged from -550 to -1-400 mV (vs. Ag/AgCI), which were equivalent to approximately -500 to -h450mV (SCE). Since the measured breakdown potentials of the present Ti-Ni alloys were higher than the highest corrosion potential found in the oral environment by as large as 700 mV, it seems that a breakdown of these alloys is very unlikely to occur in the oral environment.…”

Section: Materials and Methods 'mentioning

confidence: 99%

Biocorrosion study of titanium‐nickel alloys

Lin

1996

J of Oral Rehabilitation

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The present study provides results of the corrosion behaviour in Hank's physiological solution and some other properties of three Ti-Ni alloys with 18, 25 and 28.4 wt% Ni, respectively. Results indicate that alpha-titanium and Ti2Ni were the two major phases in all three Ti-Ni alloys. The relative amount of the Ti2Ni phase increased with additional Ni content. Hardness of the Ti-Ni alloys also increased with added nickel content, ranging from 310 to 390 VHN, similar to the hardness of enamel. Melting temperatures of the Ti-Ni alloys were all lower than that of pure titanium by least 600 degrees C. The three Ti-Ni alloys behaved almost identically when potentiodynamically polarized in Hank's solution at 37 degrees C. The critical anodic current densities of the alloys were nearly 30 microA/cm2 and the breakdown potentials were all above 1100 mV (SCE).

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Section: Materials and Methods 'mentioning

confidence: 99%

Biocorrosion study of titanium‐nickel alloys

Lin

1996

J of Oral Rehabilitation

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“…BERGMAN e/a/. (18,19) and NILNER (20) reported the maximum calculated current which two restorations in metallic contact can support under clinical conditions. The aim of the present study was to investigate a group of persons referred to the Faculty of Odontology, University of Umei regarding both general oral status and certain factors which could be related to corrosion in the oral cavity and to compare the results with those obtained from a control group.…”

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confidence: 99%

Clinical study of patients referred for investigation regarding so‐called oral galvanism

Johansson

Stenman

Bergman

1984

European J Oral Sciences

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– Fifty‐four patients referred to the Faculty of Odontology, University of Umeå, for investigation regarding “oral galvanism” were subjected to a general oral investigation. In addition the following parameters were studied: the highest calculated current between two metallic restorations in contact and the electrogustometrically determined threshold value for each person. No differences were found regarding these two parameters between the patients and a control group consisting of 15 persons. However, the general oral investigation had revealed that a relatively large number of patients had periodontal conditions which, together with mucous membrane affections and hypersensitivity reactions could explain some of the unpleasant sensations which bothered them. Furthermore, the results of a stomatognathic investigation which will be presented separately revealed that about three fourths of the patients needed treatment for their stomatognathic and/or temporomandibular joint conditions.

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“…The total number of amalgam surfaces in the mouth was also registered in both groups. Finally potential and polarization measurements of existing and accessible dental metallic restorations were taken (15)..…”

Section: Materials and Metliodsmentioning

confidence: 99%

Plasma‐selenium, glutathione peroxidase in erythrocytes and mercury in plasma in patients allegedly subject to oral galvanism

Molin

Marklund

Bergman

et al. 1987

European J Oral Sciences

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– Twelve patients with subjective symptoms, ascribed by the patients themselves to mercury released from dental restorations, were investigated. In addition to a general dental examination the following parameters were registered: the total number of amalgam surfaces in the mouth; potential and polarization of existing and accessible dental metallic restorations for calculation of intraoral currents. As regards the highest calculated intraoral current for each individual there was a statistically significant difference between the patient group and a control group consisting of 12 persons. An analysis of the amount of selenium, glutathione‐peroxidase and mercury in the blood showed no differences between the patient and the control group. However, a statistically significant positive correlation could be seen between the total number of amalgam surfaces and the plasma‐mercury level for patients and controls pooled together. The numerous other blood parameters analyzed did not reveal any differences between the groups.

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Potentials of and currents between dental metallic restorations

Cited by 17 publications

References 7 publications

Biocorrosion study of titanium‐nickel alloys

Biocorrosion study of titanium‐nickel alloys

Clinical study of patients referred for investigation regarding so‐called oral galvanism

Plasma‐selenium, glutathione peroxidase in erythrocytes and mercury in plasma in patients allegedly subject to oral galvanism

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