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Effects of Solvent Extracts of Rice Bran and Free-fatty Acids Upon Plaque and Acid Formation

Marked inhibition of S. mutans plaque and acid formation was observed when solvent extracts of rice bran or several fatty acids were added to the culture medium. It is proposed that the effects observed with bran extracts are due to their fatty acid content. It would appear that the growth of, and acid formation by, microorganisms frequently mentioned in relation to dental caries can be controlled by a mixture of two or more fatty acids.