why does the tooth tooth decay starts when pH of mouth is lower than 5.5
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Answered by
127
because acid level increases n tooth decay starts
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Answered by
217
Tooth decay starts when pH of mouth is lower than 5.5 because the the acid presence will increase in the mouth . So that we use tooth paste. Tooth pastes are basic so that they can control the increase of acid's presence in the mouth.
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