Stained tooth is a cosmetic problem. Consult your dentist if you have stained teeth and it bothers you. In a child any change in color of a tooth should be evaluated.
Disclaimer
Tooth Discoloration: When should one seek medical advice?
Tooth Discoloration: Consult your dentist if you have stained teeth and it bothers you. In a child any change in color of a tooth should be evaluated.