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

Johansson, Björn; Stenman, Evert; Bergman, Maud

doi:10.1111/j.1600-0722.1984.tb00916.x

Cited by 24 publications

(17 citation statements)

References 13 publications

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“…This was also verified by the fact that 44% of the patients reported that they had chosen this type of therapy to avoid metallic restorations, compared with the 40% who had chosen it for esthetic reasons. That females are more negative to metallic restorations has been shown in several other studies (12)(13)(14) and is corroborated by our findings.…”

Section: Discussionsupporting

confidence: 95%

A clinical evaluation of the Optec inlay system

Molin

Karlsson

1992

Acta Odontologica Scandinavica

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To evaluate the clinical quality of ceramic (Optec) inlays, the inlay production of 10 dentists, served by 3 dental laboratories, was examined independently by 2 calibrated examiners. A total of 57 patients with 205 inlays (mean age, 8.1 months) were examined 1 to 32 months after placement by means of using a slightly modified form of the California Dental Association criteria. Periodontal variables such as plaque index, gingival index, and margin index were also recorded. Eight patients reported postoperative but not persistent hypersensitivity in relation to the Optec therapy. No differences between Optec proximal surfaces and homologous control surfaces were seen with regard to plaque or bleeding on probing. The examination using the CDA criteria showed that 59% of the inlays had a slight color mismatch. Slightly roughened surfaces were most common (86%). As to anatomic form and margin integrity, 24% and 67%, respectively, of the inlays were rated excellent. A difference between the dentist with regard to the clinical quality of the inlay treatment procedure was seen. The present results cannot allow a definitive judgement with regard to the long-term clinical quality of the Optec inlay system but will serve as a base for further studies.

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Section: Discussionsupporting

confidence: 95%

A clinical evaluation of the Optec inlay system

Molin

Karlsson

1992

Acta Odontologica Scandinavica

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“…The observed maximum corrosion current density of 0.3 |iA/cm-is 2-3 orders of magnitude lower than the values reported to elicit metallic or other unpleasant taste sensations in test persons (15). On the other hand, the marked covering of most of the surface of the brazed specimen with corrosion products, as compared to the small charge transfer recorded, suggests a significant activity of a local corrosion cell: The brazed joint corrodes anodically, releasing metal ions that combine with hydroxide and chloride ions in the electrolyte, precipitating as corrosion products on the cathodic surface of the rest of the specimen.…”

Section: Discussioncontrasting

confidence: 56%

Corrosion investigation of two materials for implant supraconstructions coupled to a titanium implant

Ravnholt¹,

Jensen

1991

European J Oral Sciences

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– The corrosion of two materials for implant supraconstructions, a carbon fiber/PMMA composite and a silver‐palladium alloy, was investigated in vitro, the materials being galvanically coupled to a titanium implant. Corrosion current and pH of the electrolyte were monitored, and corrosion products were identified by powder X‐ray diffraction. The carbon composite and the silver‐palladium per se did not corrode, whereas a silver‐palladium specimen brazed with the recommended brazing alloy corroded unmistakably, yielding copper‐containing corrosion products. The action of local corrosion cells around the brazed joint is considered, and it is concluded that the two materials seem well suited for implant supraconstructions, provided that brazing the silver‐palladium can be avoided. Considering the clinical relevance of the experimental model used, it is concluded that the model is likely to predict a lower corrosion susceptibility than the one found in vivo.

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“…Discussion JOHANSSON et al (17) reported in their study of oral galvanism patients that the patients' periodontal condition was worse, and they more often needed treatment for their stomatognathic or TMJ disorders than the controls. The same has been observed in other Swedish studies with patients complaining of symptoms related to oral galvanism (7,8) or amalgam fillings in general (9,10).…”

Section: Resultsmentioning

confidence: 97%

Patients complaining about amalgam‐related symptoms suffer more often from illnesses and chronic craniofacial pain than their controls

Meurman

Porko

Murtomaa

1990

European J Oral Sciences

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– All patients who during the academic year 1987–88 had come or were referred for investigation to the Institute of Dentistry, University of Oulu, because of their anticipated amalgam‐related symptoms were included in the study. The group comprised 20 patients, 7 men and 13 women, 41.6 ± 11.1 yr old. For paired controls, 20 age and sex matched subjects were randomly selected among other patients at the Institute. The subjects' medical and dental history was taken, they were all examined clinically, and saliva analyses were done. The subjects were tested with standard patch test series of 25 common dental allergens. All patients were given the possibility to give a blood test for mercury concentration analysis, but only five were willing to do so. The results showed that the group of 20 patients suffered significantly more often from medical illnesses than the controls (P<0.05). Chronic craniofacial pain was diagnosed significantly more often among the patients than in the controls (P<0.01). The controls had more caries than the patients, but there was no difference in any other clinical, salivary chemical or microbiological findings between the groups. In the five patients who gave blood samples, both inorganic and organic mercury levels were below threshold values. No difference was observed between the patients and controls in the allergy test reactions.

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

Cited by 24 publications

References 13 publications

A clinical evaluation of the Optec inlay system

A clinical evaluation of the Optec inlay system

Corrosion investigation of two materials for implant supraconstructions coupled to a titanium implant

Patients complaining about amalgam‐related symptoms suffer more often from illnesses and chronic craniofacial pain than their controls

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