Magnetic field effects on dental amalgam in divers welding and cutting electrically underwater

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Ortendahl, T. W., Hogstedt, P.. Magnetic field effects on dental amalgam in divers welding and cutting electrically underwater. 1988.

Please use this identifier to cite or link to this item: http://medspace.mc.duke.edu:8080/vital/access/HandleResolver/2193.1/59728

Title: Magnetic field effects on dental amalgam in divers welding and cutting electrically underwater
Creator: Ortendahl, T. W.
Creator: Hogstedt, P.
Contributor: Department of Histology, Gothenburg University, Sweden.
Subject: Adult
Subject: Dental Amalgam
Subject: Diving -- Adverse Effects
Subject: Electromagnetic Fields -- Adverse Effects
Subject: Electromagnetics -- Adverse Effects
Subject: Humans
Subject: Male
Subject: Metals
Subject: Models, Theoretical
Subject: Taste
Subject: Welding
Date: 1988
Description: Divers have for some years been complaining about a metallic taste in the mouth while electrically welding and cutting underwater. This paper reports on results from an assessment of this problem. It was hypothesized that the magnetic fields arising from the welding or cutting current could correlate with the reported symptoms. The intraoral magnetic flux density was calculated to 1.15 mT, at 650 ADC, in a normal cutting situation. This was verified in vivo. This magnetic field was shown to contain an AC component that is a candidate for inducing secondary currents in the oral tissues and restorative materials. Five submerged divers exposed to a magnetic field of 0.35 mT did not report any metallic taste. Magnetophosphenes were reported by 1 diver. (Magnetophosphenes are luminous impressions due to excitement of the retina by a magnetic field in addition to or in place of impingement of light rays.) Only a slight shielding effect to magnetic fields was observed due to a copper-brass helmet. An in vitro model for exposure of dental amalgams to magnetic fields was designed. Recommendations for decreasing the magnetic field surrounding the diver in practical work is given.

Collection: Undersea Baromedical Research
Identifier: http://medspace.mc.duke.edu:8080/vital/access/HandleResolver/2193.1/59728
Identifier: PMID: 3227576
Identifier: dumca:5644
Rights: Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org )
Source: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=3227576
Source: Undersea Biomedical Research 15(6), 429-41. (1988)

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