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Journal of Dental Research, Vol 63, 1186-1189, Copyright © 1984 by International & American Associations for Dental Research Online Journals

ARTICLES

A model for producing caries-like lesions in enamel and dentin using oral bacteria in vitro

B. H. Clarkson, J. S. Wefel and I. Miller

Subsurface enamel lesions and root surface caries-like lesions were consistently produced in vitro using Streptococcus mutans FA1 cultured in thioglycollate broth containing 3.5% w/v dextrose and 2% w/v gelatin. When viewed in polarized light and after imbibition in water, the enamel lesions had a negatively birefringent surface zone and positively birefringent body of the lesion. Those lesions produced after six weeks, after imbibition in quinoline, exhibited a dark zone. The root surface caries-like lesions exhibited a less-radiolucent surface zone above a heavily demineralized body of the lesion. However, no reactionary dentin was seen in the in vitro lesions.




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