来自MSN11 个月
Why are my teeth turning brown? Dentists reveal the issues behind this common problem - and ...Fluorosis can also be why your teeth are turning ... An important part of good oral hygiene is avoiding, and being on the lookout for, brown spots on the teeth, he adds. "Brown spots can be ...
At least nine Wisconsin communities have discontinued adding fluoride to their drinking water, and DeForest is one of at ...
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