INBDE (Integrated National Board Dental Examination) Practice Exam

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What bacteria is commonly associated with dentinal caries?

  1. Lactobacillus

  2. Streptococcus mutans

  3. Candida albicans

  4. Streptococcus sanguinis

The correct answer is: Lactobacillus

Lactobacillus is commonly associated with dentinal caries because it is one of the primary types of bacteria found in the oral cavity that contribute to the development of this type of tooth decay. Other bacteria, such as Streptococcus mutans and Streptococcus sanguinis, are also commonly found in the mouth but are not as strongly linked to dentinal caries as Lactobacillus. Candida albicans is a type of yeast and is not typically associated with tooth decay, so it is not a likely answer for this question.