The Short Answer: The right treatment for stained teeth depends entirely on the cause of the discolouration.

Surface stains from food and smoking can often be removed with professional cleaning or whitening. However, deep (intrinsic) stains caused by trauma, medication, or genetics may require cosmetic solutions like veneers or crowns to achieve a brighter appearance.

Why do teeth get stained?

Teeth discolouration is generally divided into two categories. Identifying which one you have is the first step to finding a solution.

1. Extrinsic Stains (Surface) These are stains on the outer layer of the tooth (enamel). They are usually caused by lifestyle factors:

  • Diet: Coffee, tea, red wine, sodas, and dark berries.
  • Tobacco: Smoking or chewing tobacco causes stubborn yellow or brown stains.
  • Poor Hygiene: Plaque buildup can harden into tartar, which absorbs stains easily.

2. Intrinsic Stains (Internal) These are changes to the inner structure of the tooth (dentin) or deep within the enamel. They are harder to treat and can be caused by:

  • Aging: As enamel thins over time, the naturally yellow dentin underneath shows through.
  • Trauma: An injury to a tooth can cause it to darken from the inside.
  • Medication: Excessive fluoride exposure during childhood or the use of tetracycline antibiotics can cause grey or banded staining.

Will whitening work for me?

For most extrinsic (surface) stains, professional teeth whitening is highly effective.

  • In-Chair Whitening: A fast procedure performed by the dentist using a high-concentration gel and a special light.
  • Take-Home Kits: Custom-made trays allow you to whiten your teeth gradually at home.
  • Note: Whitening treatments work on natural enamel only. They will not change the colour of existing fillings, crowns, or veneers.

When are veneers the better option?

If you have intrinsic (deep) staining—such as grey bands from antibiotics or teeth that have darkened due to trauma—standard whitening may not give you the result you want. In these cases, porcelain veneers are often the ideal solution. A veneer is a thin, custom-made shell that covers the front surface of the tooth. Instead of trying to bleach the stain, the veneer masks it completely, giving you a uniform, white smile.

Can I prevent stains from coming back?

Yes. Whether you choose whitening or veneers, maintenance is key to prolonging your results.

  • Hygiene: Brush twice daily and floss to prevent plaque buildup.
  • Diet: Rinse your mouth with water after drinking coffee, tea, or wine. Using a straw for dark drinks can also help bypass the front teeth.
  • Regular Visits: See your hygienist every 6 months. Professional polishing can remove fresh surface stains before they set in.

Conclusion

You don’t have to live with a smile you are uncomfortable sharing. By assessing the type of staining you have, the team at Sundial Dental can recommend a treatment plan—whether that is a simple polish, a whitening course, or a cosmetic makeover—to restore your confidence.