Question

why does tooth decay when PH of mouth is cower than 5.5?​

Answer 1

HERE IS UR ANSWER DEAR,

Bacteria in the mouth create acids after eating through the oxidation of sugar and food particles in the mouth. Tooth decay starts when the mouth's pH is below 5.5. ... Since plaque coats the teeth, saliva can not reach the tooth layer to neutralize the acid.

Answer 2

Answer:

Bacteria in the mouth create acids after eating through the oxidation of sugar and food particles in the mouth. Tooth decay starts when the mouth’s pH is below 5.5.

In addition to food particles, masses of bacterial cells bind to the teeth to form dental plaque. Since plaque coats the teeth, saliva can not reach the tooth layer to neutralize the acid. Upon eating brushing the teeth removes the plaque before acids are formed by the bacteria.

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