How do *Mutans streptococci* and *Lactobacilli* contribute to the process of dental caries formation?
Understand the Problem
The question is asking about the roles of Mutans streptococci and Lactobacilli in the formation of dental caries (tooth decay). It presents four options, and we need to identify the correct mechanism by which these bacteria contribute to the decay process.
Answer
*Mutans streptococci* and *Lactobacilli* produce acids that demineralize tooth enamel, causing cavities.
Mutans streptococci and Lactobacilli contribute to dental caries (cavity) formation by producing acids as a byproduct of their metabolism. This creates an acidic environment in the mouth, which demineralizes tooth enamel and leads to the development of cavities.
Answer for screen readers
Mutans streptococci and Lactobacilli contribute to dental caries (cavity) formation by producing acids as a byproduct of their metabolism. This creates an acidic environment in the mouth, which demineralizes tooth enamel and leads to the development of cavities.
More Information
Both Mutans streptococci and Lactobacilli are acidogenic, meaning they produce acid, and aciduric, meaning they can survive and thrive in acidic environments. This allows them to continue producing acid and contributing to the caries process even as the environment becomes more acidic.
Tips
A common mistake is to only name one of the bacteria species (Mutans streptococci OR Lactobacilli) responsible for the formation of dental caries. To get the question right, you should name both.
Sources
- Oral Lactobacilli and Dental Caries: A Model for Niche Adaptation in ... - pmc.ncbi.nlm.nih.gov
- Mutans streptococci and lactobacilli on healthy and carious teeth in ... - tandfonline.com
- Mutans Streptococci and Lactobacilli: Colonization Patterns and ... - frontiersin.org
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