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Competitive Binding Among Oral Streptococci to Hydroxyapatite

School of Dentistry and Department of Microbiology, University of Minnesota, Minneapolis, Minnesota 55455, USA

S.V. Schauer

School of Dentistry and Department of Microbiology, University of Minnesota, Minneapolis, Minnesota 55455, USA

The relative affinity of various oral streptococci for hydroxyapatite (HA) differed widely. Streptococcus mutans affinity for dextran-coated HA was the highest of all the streptococci to any HA coating. S salivarius had the lowest affinity, and S sanguis affinity was higher than S miteor for saliva-coated HA. Competition for binding sites on saliva-coated, dextran-coated, and saliva-dextran-coated HA among these streptococci was not observed in any pair of these bacteria on any HA coating except for that of S miteor and S sanguis to saliva-coated HA. However, competition between this pair was not for the same binding site but for closely associated sites.

Journal of Dental Research, Vol. 56, No. 2, 157-165 (1977)
DOI: 10.1177/00220345770560021001


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