ADA NBDHE Dental Hygienist

Category - Scientific Basis for Dental Hygiene Practice

At the root surface of caries, what is the most common cariogenic bacterium?
  1. Actinomyces viscus
  2. Veillonella
  3. Streptococcus salivarious
  4. Lactobacilli
Explanation
Answer: A - At the root surface of caries the most common cariogenic bacteria is Actinomycesviscus. It is often partnered with bacteria such as Staphylococcus, Veillonella, and Lactobacilli. Often, the infection is accompanied by low fever, soft nodules that harden over time in the angle of the jaw, and chewing difficulties. The bacteria may also be found in thorax, pelvis, and abdomen.
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