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Journal of Dental Research
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Fatty Acids of Healthy and Periodontally Diseased Root Substance in Human Teeth

H. Lygre

Department of Dental Materials, School of Dentistry, Aarstadvn. 17, 5009 Bergen

E. Solheim

Department of Pharmacology and Toxicology, University of Bergen, 5021 Bergen, Norway

N.R. Gjerdet

Department of Dental Materials, School of Dentistry, Aarstadvn. 17, 5009 Bergen

N. Skaug

Laboratory of Oral Microbiology, University of Bergen, 5021 Bergen, Norway

In this comparative study, samples of root substance from healthy and periodontally diseased human teeth were analyzed for fatty acids by means of a gas-chromatographic technique. The sample preparation procedure allowed specimens from individual teeth to be analyzed. The content of the fatty acids C16:0, C16:1, C18:0, and C 18:1 in the superficial layer ofthe periodontally diseased teeth was significantly higher than that of healthy teeth. In the inner layer, there was no such difference. Four different 3-hydroxy fatty acids (3-OH C14:0, 3-OH C15:0, 3-OH C16:0, and 3-OH C17:0) were identified by combined gas-chromatography/mass-spectrometry in the tooth substance of periodontally diseased teeth. This indicates the presence of lipid A, which is the toxic component of bacterial lipopolysaccharides.

Journal of Dental Research, Vol. 71, No. 1, 43-46 (1992)
DOI: 10.1177/00220345920710010701
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[Abstract] [Full Text]