what is to the tooth decay what precautions should be taken to avoid it
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tooth decay starts when ph of the mouth is lower than 5.5 .It can be prevented using tooth paste which is a base
shubham410:
in which school are you
please tell
why are you asking my class
please answer my questions
becoz ,even I have acid base and salt
lesson
tell
i don't know the answer
in which school are you
I am in 7th
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