Believe it or not, tea-totaling can actually help cut down on cavities! Tea contains two components that help stop the decay that causes cavities: natural fluoride and tannins. These substances strengthen tooth enamel and make it more resistant to bacterial attacks. Both green and black teas are effective plaque fighters. But powdered instant teas deliver the best anti-cavity power because they contain three times the amount of fluoride in regular tea.
Unfortunately, herbal teas are made from different types of plants and don’t contain the substances necessary to fight cavities. And you mustn’t take your tea with sugar. The sugar cancels out the anti-cavity action. In addition to this, normal brushing and flossing as well as oral exams are always necessary.