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why does tooth decay start when the pH of mouth is lower than 5.5?

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asked Jan 15, 2018 in Chemistry by jisu zahaan (28,760 points) ● 26 ● 377 ● 821
why does tooth decay start when the pH of mouth is lower than 5.5?

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answered Jan 15, 2018 by faiz (82,347 points) ● 6 ● 6 ● 11
selected Jan 25, 2018 by Vikash Kumar
 
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Tooth starts decaying when the pH of our mouth is lower than 5,5. This is because below this pH value, the medium of the mouth becomes more acidic clue to which tooth enamel corrodes at a faster rate.

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