There are several factors that can contribute to stained teeth:
- Diet: Consuming dark-coloured beverages like coffee, tea, red wine, and colas, as well as foods rich in pigments like berries and soy sauce, can lead to surface staining over time.
- Smoking and Tobacco Use: Nicotine and tar in tobacco products can cause stubborn brown or yellow stains on teeth.
- Poor Oral Hygiene: Inadequate brushing and flossing can allow plaque and tartar buildup, which can lead to surface stains.
- Aging: As people age, the enamel naturally wears down, making the underlying dentin more visible, which can cause teeth to appear discoloured.
There are other factors such as medications, genetics and medical conditions which can also cause stained teeth.