Make sure to take this up with your dentist because he or she will know better if you, personally, are unable to whiten your teeth or not. They also might have special ways to get you the smile that you desire. Never give up hope.
When Whitening Teeth Won't Work For You:
If your discoloration is congenital.
Check with your dentist to see if your stains are actually suppose to be there or not. Sometimes, people are born with naturally darker teeth than others.
If your stains are from drugs, such as tetracycline.
This won’t help and can make your teeth very sensitive. It will also not do any good if you do use the bleaching agents.
If you have sensitive teeth, bleaching agents will make them more sensitive.
You should avoid chemical teeth whitening, including some of the stronger whitening toothpastes and mouth washes.
Although there are exceptions to every rule, it's better to be safe than sorry. Consult your dentist if you have any concerns.
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