My teeth keep getting more yellow even though I brush twice a day. Why won’t they stay white?
Brushing twice a day is excellent for oral health, but it doesn’t guarantee naturally white teeth. Tooth color is influenced by the enamel, the dentin underneath it, age, and staining. Why your teeth may be getting yellower Natural aging: Enamel gradually becomes thinner, allowing the naturally yellowish dentin underneath to show through. Coffee, tea, cola, …









