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J Dent Res 22(2): 103-106, 1943
© 1943 International and American Associations for Dental Research
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INCIDENCE OF UREASE PRODUCING BACTERIA IN SALIVA

M. K. HINE 1 and J. F. O'DONNELL 1

1 Department of Dental Pathology and Therapeutics, University of Illinois, College of Dentistry, Chicago, Ill.

Bacteria capable of producing urease were found in 92.8% of 405 salivary samples from 82 patients. In 65.4% of the samples, appreciable quantities of urease were produced.

In general, salivary samples which gave low L. acidophilus colony counts and a limited amount of acid production from glucose, contained more active urease-producing bacteria than did salivary samples which gave extremely high L. acidophilus counts and produced much acid.

Significance of these findings to the formation of dental caries and salivary calculus was not established, but deserves further study.

Submitted on January 29, 1943






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