For a bacterium to be seriously considered in the etiology of dental caries, it must______________?
Correct answer: A. Exist regularly in the dental plaque
- A. Exist regularly in the dental plaque
- B. Produce extracellular amylopectins
- C. Be lethal for gnotobiotic animals
- D. Produce intracellular dextrans
Explanation
Regular presence in dental plaque is a basic requirement for a bacterium to be considered a caries pathogen, because plaque is the microbial environment where caries begins. The other options are not established essential criteria.
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