My orthodontist said that I could trink iced tea (unsweetened) only if I drank it thru a straw and all the water that I wanted. In fact he encouraged me to carry a water bottle around with me because he said my mouth would be really dry. He yelled at me about smoking. I have had 2 cigarettes today without the braces in. Who knows - maybe I will lose weight and quit smoking at the same time.