INBDE Integrated National Board Dental Exam Prep Set 2

Answer: A - At the root surface of caries the most common cariogenic bacteria is Actinomyces viscus. 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.