Question

why tooth decay start when ph of mouth is lower than 5.5?​

Answer 1

Explanation:

When the pH in the mouth falls below 5.5, tooth decay starts. Bacteria present in the mouth produce acid by degradation of sugar and food particles which remain in the mouth after eating. The acid produced in the mouth attack the enamel thereby, creating tooth decay.

Answer 2

Hey when we have pH level below 5.5 acidity in our mouth increases and that acidity makes our teeth's enamel thinner as it is our protective layer of teeth so .our teeth starts decaying........

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