After teeth whitening, patients should limit their intake of dark-colored beverages like tea, coffee, and cola because these can discolor the smile. For those who do not want to give up morning coffee or an evening glass of wine, they can try drinking these through a straw. This limits how much of the drink touches the teeth and reduces the likelihood of discoloration.
Orange juice and other fruit juices are sugary and acidic and can cause enamel deterioration if consumed regularly. They can also contribute to decay and discoloration. It is advisable to brush the teeth soon after drinking these beverages.