Healthy adult teeth naturally contain a mixture of yellow, red, and gray shades. Teeth whitening can work wonders – no matter how your teeth look on the color spectrum. Regular teeth cleanings can help make your teeth whiter.
The dentin is revealed when enamel is thinned, usually due to ageing or brushing too hard.
It’s likely that you have experienced tetracycline damage – probably sometime during your youth.
Some studies show that too much unsupervised whitening can give teeth a blue hue – boo hoo!
Could be too much coffee, tea, or red wine, or due to smoking or chewing tobacco.