in the growth substrates it can metabolize is likely what allows successful colonization of the GI tract.

Habitat

Oral cavity

Scientists have shown that B. dentium can cause tooth decay in humans and so is considered an opportunistic cariogen. B. dentium is highly adapted for its niche in the human oral cavity. Its high tolerance to the acidic environment of the human mouth (pH 4.5) means B. dentium can sustain growth in the oral cavities,

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