Yellowing (Teeth Discoloration)

Yellowing, often referred to as teeth discolouration, is a common change in tooth colour that can range from light staining to deeper intrinsic darkening. It can result from extrinsic factors such as consumption of staining foods and drinks, tobacco use, and poor oral hygiene, or from intrinsic causes such as enamel thinning with age, trauma, certain medications taken during tooth development, or excessive fluoride exposure, with exposed dentine appearing naturally yellower than enamel.

Diagnosis is typically made by a dental professional who assesses whether the discolouration is surface-level and removable or intrinsic and more resistant to whitening. Treatment options include professional cleaning, in-office or at-home whitening systems, and conservative cosmetic restorations like composite bonding or veneers for more persistent intrinsic staining, while prevention focuses on good oral hygiene and reducing exposure to known staining agents.