I noticed last night that the back of my teenage daughter's teeth have black patches on them, which I assume is from drinking too much Coca Cola.

What can she do about these, is there any way to remove them? I have of course told her she must cut down the amount of sugary drinks that she drinks.

Thank you

I would get her to a dentist, it could be signs of tooth decay.

Black patches could be a sign of decay and I think a trip to the dentist is in order.

Black spots on teeth are a sign of possible tooth decay if she doesn't go to a dentist ASAP it can turn into cavity and can lead to tooth loss. For now cutting down on the sugar or getting rid of it altogether can help slow down the process of decay until you can take her to a dentist to get treated.

Help her to limit her intake of the sodas by not buying them, or buying very limited quantities. If they aren't in the house, she will naturally have fewer opportunities to drink them. She can also drink them with a straw and that will help to cut down on the exposure.

Go with Diet soda! And go to the dentist