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Journal of Dental Research
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Basic Biological Sciences

Lipids of Supragingival Calculus

B.L. Slomiany

Gastroenterology Research Laboratory, Department of Medicine, New York Medical College, New York, New York 10029

V.L.N. Murty

Gastroenterology Research Laboratory, Department of Medicine, New York Medical College, New York, New York 10029

M. Aono

Gastroenterology Research Laboratory, Department of Medicine, New York Medical College, New York, New York 10029

J. Sarosiek

Gastroenterology Research Laboratory, Department of Medicine, New York Medical College, New York, New York 10029

A. Slomiany

Gastroenterology Research Laboratory, Department of Medicine, New York Medical College, New York, New York 10029

I.D. Mandel

Division of Preventive Dentistry, School of Dental and Oral Surgery, Columbia University, New York, New York 10032

The matrix of supragingival calculus constitutes 15.7% of the calculus dry weight and contains 54.9% protein and 10.2% lipids. Of the total lipids, 61.8% are represented by neutral lipids, 28% by glycolipids, and 10.2% by phospholipids. The neutral lipids exhibit a high content of free fatty acids (63.9%) and triglycerides (15.8%). The glycolipids are comprised of simple glycosphingolipids (17.2%), mainly lactosyl- and glucosylceramides, and of neutral and sulfated glyceroglucolipids (82.8%). The phospholipids contain large quantities of phosphatidylethanolamine (34.2%) and diphosphatidylglycerol (25.5%). Comparison with salivary and submandibular stone lipids indicates that both saliva and bacteria contribute to the lipid content of supragingival calculus.

Journal of Dental Research, Vol. 62, No. 8, 862-865 (1983)
DOI: 10.1177/00220345830620080101
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