Question

Y does tooth decay starts when ph value is lower than 5.5

Answer 1

Explanation:

because ph below 5.5 is very much acidic.

Answer 2

Answer:

When we eat for it contains sugar,then the bacteria present in our mouth break down the sugar to form acids. Tooth decay starts when pH is lower than 5.5 this is because the acid is strong enough to attack the enamel of our teeth and corrode it. This starts the tooth decay

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.