Tooth discoloration refers to the staining or darkening of your teeth, which can affect your smile and confidence. The causes of tooth discoloration can be grouped into two categories:

Unavoidable Causes:
Aging: Over time, the enamel wears down, revealing the yellowish dentin underneath.
Trauma: Injuries to teeth can lead to discoloration.
Disease: Certain illnesses or medical treatments (like chemotherapy) can cause changes in tooth color.
Preventable Causes:
Smoking: Tobacco products can lead to yellow or brown stains.
Poor oral hygiene: Inadequate brushing and flossing can allow plaque and stains to accumulate.