| Identification of a foreign body using energy dispersive x-ray analysis. | |
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MedLine Citation:
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PMID: 7205188 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A foreign object, presumably swallowed during a dental appointment, was recovered by using an esophagoscope and thought to be a piece of dental impression material, probably alginate. It was identified as being of nondental origin by means of visible light and scanning electron microscopy (SEM), the latter coupled to an energy dispersive X-ray analyzer. Histologic examination revealed some amorphous crystalline material surrounded by parakeratin and exfoliated squamous cells. The material was essentially radiolucent. A known dental alginate impression material contained diatomaceous earth filler (siliceous shells of diatoms), but no microscopic symmetrical figures were seen in the foreign body. After dehydration, both materials were carbon-coated and observed in an SEM at 20 kV at magnifications up to 2000 X. The spectrum of secondary X-rays produced by the scanning electron beam revealed only magnesium in the foreign body and mostly silicon in the dental alginate. There are no known dental products that contain magnesium as the only inorganic ingredient and so the foreign body is believed to be not of dental origin. The patient may have had an antacid or laxative having magnesium as a major ingredient in the stomach, and this may have been refluxed from the stomach after stimulation of the normal gag reflex during the dental procedure. |
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Authors:
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L Gettleman; R F Carr; E E Herschaft |
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Publication Detail:
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Type: Case Reports; Journal Article |
Journal Detail:
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Title: Journal of forensic sciences Volume: 26 ISSN: 0022-1198 ISO Abbreviation: J. Forensic Sci. Publication Date: 1981 Jan |
Date Detail:
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Created Date: 1981-05-28 Completed Date: 1981-05-28 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0375370 Medline TA: J Forensic Sci Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 58-63 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Dental Materials* Electron Probe Microanalysis Foreign Bodies* Humans Magnesium / analysis Microscopy, Electron, Scanning |
| Chemical | |
Reg. No./Substance:
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0/Dental Materials; 7439-95-4/Magnesium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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