Why are my teeth discoloured?
Generally, the discolouration of teeth is mostly attributable to external staining. This staining comes from food, drink and other habits like smoking. Calculus (the mineralised plaque deposits on teeth) is a major factor.
With time and if untreated, this staining can become more established and begins to affect the layers beneath the surface.
Wear, tear and fracture lines can also change the surface properties of the enamel and allow the staining to be carried deeper into the tooth tissue, all leading to the effect of discolouration.
Sometimes genetic influences and medical issues during development can contribute to an apparently darker appearance of the teeth.