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Why does tooth decay start when the ph of mouth is lower than 5.5?

Posted by Amaira Khan 6 years, 9 months ago

CBSE > Class 10 > Science

5 answers

Archita Bhattacharjee 6 years, 9 months ago

When the pH of the mouth is lower than 5.5 then the mouth becomes acidic in nature hence it starts decaying due to the presence of acid in the mouth as it usually comes due to the presence of bacteria for eating much , the bacteria releases the acids into the month.

1Thank You

Yash Rajput 6 years, 9 months ago

Because our teeth are made up of calcium and phosphate and they are basic in nature so when the pH of mouth increases then acid reacts with teeth and may harm our teeth.

1Thank You

Shivam Jaiswal 6 years, 9 months ago

As the germs responsible for decaying tooth became active only in the acidic environment of mouth

2Thank You

Amrit Amrit 6 years, 9 months ago

Because acid formed.. By bacteria and food left in mouth....acid start decaying teeth

2Thank You

Mayank Bhunia 6 years, 9 months ago

At lower pH the tooth enamel starts to decay

1Thank You

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CBSE > Class 10 > Science