Document Detail

Growth and acid tolerance of human dental plaque bacteria.
MedLine Citation:
PMID:  6594096     Owner:  NLM     Status:  MEDLINE    
Pure cultures of representative strains of cariogenic and non-cariogenic plaque bacteria were assessed for their ability to initiate and maintain growth in broths, adjusted to initial pH levels of 7.0, 5.5 or 5.0, and to produce lactic acid from sucrose or glucose in resting-cell suspensions at pH 6.5, 5.0, 4.5 and 4.0. Streptococcus mutans, Lactobacillus casei and Streptococcus faecalis showed greater acid tolerance than strains of Streptococcus sanguis, Streptococcus salivarius, Streptococcus mitis and Actinomyces viscosus. For all species, growth initiation in broth was more acid sensitive than lactic-acid production in resting-cell suspensions. These data confirm and extend previous observations that the species of plaque bacteria most closely associated with the initiation or progression of dental caries are more aciduric than non-cariogenic species.
D S Harper; W J Loesche
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Archives of oral biology     Volume:  29     ISSN:  0003-9969     ISO Abbreviation:  Arch. Oral Biol.     Publication Date:  1984  
Date Detail:
Created Date:  1984-12-05     Completed Date:  1984-12-05     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0116711     Medline TA:  Arch Oral Biol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  843-8     Citation Subset:  D; IM    
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MeSH Terms
Actinomyces / growth & development,  metabolism
Bacteria / metabolism*
Dental Plaque / microbiology*
Glucose / metabolism
Hydrogen-Ion Concentration
Lactates / metabolism
Lactic Acid
Lactobacillus / growth & development,  metabolism
Streptococcus / growth & development,  metabolism
Sucrose / metabolism
Grant Support
Reg. No./Substance:
0/Lactates; 50-21-5/Lactic Acid; 50-99-7/Glucose; 57-50-1/Sucrose

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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