Which of the following is NOT a characteristic of Streptococcus mutans?

Streptococcus mutans is a key bacterium associated with dental caries, and its characteristics are important to understand in the context of oral health.

This organism is typically acidogenic, meaning it can produce acids as a byproduct of fermentation, particularly from sugars. These acids contribute to the demineralization of tooth enamel, leading to the formation of cavities. This characteristic is fundamental to its role in caries development.

Another important aspect of S. mutans is its ability to form biofilms. This characteristic allows it to adhere to tooth surfaces, particularly in the presence of sucrose, and contribute to the plaque formation that harbors a complex community of bacteria.

While S. mutans can be found in various locations in the oral cavity, it is more predominantly located in supragingival plaque rather than subgingival plaque. This distinction is crucial because subgingival plaque is typically dominated by other bacterial species that are more associated with periodontal disease.

Therefore, the correct answer identifies the option that does not align with the characteristics typically associated with Streptococcus mutans. Understanding these specific traits helps clarify S. mutans' role in oral microbiology and dental health.