Cavity

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May 17, 2019 10:22
One day when I ate meal I noticed my teeth was chipped.
Next day I went to a dentist.
I was told the reason for my teeth chipping was cavity.
At the moment, I was so shocked that my mind goes blank.
That's wired, I'm sure I have all my teeth fixed, two years ago.
Of course I brush my teeth two or three times a day carefully.
How on the earth do we avoid a cavity.
Is there any way to keep our teeth healthy?
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