Fluorosis would present it self from the time permanent tooth erupted. If it is fluorosis, based on degree of severity, various treatment options are available. In mild cases, bleaching /teeth whitening would be helpful. In severe cases, veneers is a good option.
But if you have seen the color recently, it could be stains, that only requires professional cleaning/scaling.
Answered2019-07-13 04:34:43
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