Tooth Discoloration What Causes It?

Normally, our teeth tend to have a relatively uniform color. If you start noticing that one tooth appears darker or more discolored than the others, it may indicate an underlying issue—often involving the dental pulp. This can result from several causes, which are generally classified into external factors and internal factors, as outlined below:

🟤 Tooth Discoloration from External Factors (External Stains)
These are surface stains that accumulate on the enamel.

• Drinking tea, coffee, red wine, or dark-colored soft drinks

• Smoking or using tobacco products

• Consuming strongly pigmented foods such as curry, spices, or dark sauces

• Inconsistent oral hygiene care

These types of stains can usually be improved with professional cleaning or teeth whitening.

🦷 Tooth Discoloration from Internal Factors (Internal Stains)
These involve changes within the tooth structure itself.

• Aging, which causes enamel to thin over time

• A non-vital (dead) tooth or previous trauma, leading to internal discoloration

• Use of certain medications, such as tetracycline during childhood

These conditions typically cannot be corrected with conventional teeth whitening alone.

⚠️ Discoloration Due to Dental Health Problems

• Deep tooth decay extending to the dental pulp

• Heavy tartar (calculus) buildup

• Discolored fillings or dental crowns

If you are unsure about the cause of your tooth discoloration, the dentists at TDH Dental can assess your condition and recommend the most appropriate treatment plan.

Our goal is to help you achieve a brighter, healthier smile—safely and with long-lasting results.