Tooth Stains

Tooth stains are changes in tooth colour. Surface stains sit on the outside of enamel and often come from coffee, tea, red wine, tobacco, or certain foods. Deeper stains affect the layer beneath enamel or the tooth itself, and can follow injury, medication, or changes inside the tooth. Stains are usually a cosmetic concern, but a sudden colour change in a single tooth after an injury deserves a dental check.

What Tooth Stains involves

A dentist will check whether staining is on the surface, inside the tooth, or linked to decay or injury. Surface stains may respond to professional cleaning or whitening, while deeper stains need a different assessment. A dentist can also check whether a darkened tooth has damage inside, rather than assuming the colour change is only cosmetic.

Signs of Tooth Stains

• Yellow, brown, or grey discolouration on teeth
• Stains that do not improve with brushing
• A single tooth that has darkened suddenly
• White spots or uneven colour on tooth surfaces

What to do right away for Tooth Stains

• Brush twice a day and rinse after staining foods and drinks
• Avoid tobacco products, which stain teeth and harm gums
• Keep regular cleaning visits
• Call for help if a single tooth darkens suddenly, or a stained tooth becomes painful

How a dentist may help with Tooth Stains

• Examine whether staining is surface or deeper
• Check for decay, injury, or internal tooth damage
• Clean the teeth and discuss whitening options when appropriate
• Give guidance on foods, drinks, and cleaning to slow new staining

When to seek urgent care for Tooth Stains

Seek urgent care if a stained tooth becomes severely painful, swells, or was injured.

General information on this page is not medical advice. A dentist who examines you can give advice for your situation.

Related emergency dental help

• Erosion
• Dental Bonding
• Tooth Abrasion

Emergency Dental Services — back to the full list. Contact Emergency Dentist for general enquiries, or call for urgent help.

Frequently asked questions about Tooth Stains

What causes tooth stains?

Surface stains come from foods, drinks, and tobacco. Deeper stains can follow injury, medication, or changes inside the tooth.

Does whitening work for all stains?

Whitening helps many surface stains, but deeper stains may respond less. A dentist can advise what is realistic for your teeth.

Should a suddenly darkened tooth be checked?

Yes. A single tooth darkening after an injury can signal damage inside the tooth, so it should be examined.