Discoloration of a tooth’s surface may have many different causes, and we differentiate between acquired and congenital causes. Acquired discoloration is easy to treat because it is mostly extrinsic discoloration caused by coloring agents in food, substances that one smokes or imbibes for pleasure, drinks, medicines, and bacteria. The following substances in particular are responsible for extrinsic discoloration:
Cherries and blueberries
Such coatings can be removed easily, and the enamel can be whitened again by bleaching.
Intrinsic discoloration, on the other hand, can only be removed through invasive procedures that may be time-consuming. Causes include fluorosis, hypomineralization, and medication-induced discoloration; these can be successfully treated by special polishing and long-term bleaching methods. Discoloration of dead or necrosed teeth and that after root canal treatment can be corrected by means of internal bleaching. Very resistant anomalies in enamel and dentine can be covered with veneers.
Below are some household products that are sometimes used to fight discoloration while brushing. However, these are not recommended because they damage the teeth.
Strawberries (mashed and used like toothpaste)
Bicarbonate of soda