Lactobacilli are numerous in caious lesions because they______________?
Correct answer: D. Are secondary invaders
- A. Are the main causative agent
- B. Can produce insoluble extracellular polysaccharides
- C. Can attack to smooth enamel surfaces
- D. Are secondary invaders
Explanation
Lactobacilli usually do not initiate enamel caries because they adhere poorly to intact smooth enamel. They multiply later in the acidic, established lesion, so they are considered secondary invaders.
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