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At what pH value tooth starts to decay?...

At what pH value tooth starts to decay?

A

11.2

B

6.5

C

5.5

D

7.5

Text Solution

Verified by Experts

The correct Answer is:
C
Tooth decay can occur when the pH level in the mouth is 5.5. For reference, the neutral level is 7.0. When we consume acidic foods and drinks, the pH within the mouth decreases and can cause the pH in the dental plaque to fall rapidly below 5.0.
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