Lipid Components of Sound and Carious Dentin

¹ School of Aerospace Medicine, USAF, Brooks Air Force Base, Texas

To characterize further the lipid components of sound and carious dentin, extracts of these materials were subjected to paper chromatography and specific chemical tests. The presence of cholesterol esters, triglycerides, fatty acids, cholesterol, diglycerides, monoglycerides (tentative), and various phospholipids were demonstrated in the sample materials. In addition, sound dentin was found to contain inositol phosphatide, sphingomyelin, lecithin, phosphatidyl-ethanolamine, lysocephalin, and three unidentified phosphatides that may be polyglycerol phosphatides and/or phosphatidic acids. Decayed material further contained phosphatidyl serine and other phosphatides which had undergone various degrees of degradation.

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