is an infection, usually bacterial in origin, that causes demineralization of the hard tissues (enamel, dentin
and cementum) and destruction of the organic matter of the tooth, usually by production of acid by hydrolysis of the food debris accumulated on the tooth surface.
The microenvironmental conditions in the habitats associated with the host health are generallly anaerobic, near neutrality in pH, and positive in oxidation -reduction potential. significant microenvironmental changes are associated with caries and periodontal disease. the changes are the result of the plaqe community metabolism
microenironment of oral habitat associated with tooth decay-
enamel caries streptococcus
mutans anaerobic, pH
dentin caries streptococcus mutans anaerobic pH lactobacillus
root caries actinomyces anaerobic, pH