A Single Grey Tooth in Your Smile: Causes and Solutions
Perhaps your teeth are not as white as you'd like them to be, but it's more or less a given that they are all the same colour. This is why it can be disconcerting when there's a break in this uniformity of colour. A single grey tooth can be a cause for alarm, and no matter how much you clean it with whitening toothpaste (or even treat it with a teeth whitening kit), this discolouration doesn't seem to shift.