What occurs to the pH of biofilm after consuming sugar?

When sugar is consumed, the bacteria within the biofilm metabolize it, producing organic acids as byproducts of their metabolic processes. This fermentation process leads to a significant decrease in pH, often dropping to levels that are considered critical for tooth enamel, typically around 5.5 or lower. This environments increases the risk of demineralization of the enamel, which can lead to cavities. The lowered pH indicates an acidic environment that is detrimental to oral health, highlighting the importance of reducing sugar intake and maintaining good oral hygiene to minimize acid production by oral bacteria.