A tooth that looks darker or grey compared to the others can be noticeable and concerning, especially if the change appears suddenly. Some people notice it after dental work or injury, while others are unsure why it’s happened.
Changes like this are covered in our Common Concerns section, which explains common dental symptoms and appearance changes, and when assessment is helpful.
A dark or grey tooth often reflects changes inside the tooth rather than surface staining, which is more commonly seen with yellow teeth or tooth discolouration. This can happen when the inner tissues of the tooth are affected.
A colour change doesn’t automatically mean the tooth is infected or needs urgent treatment, but it does mean it should be assessed.
Dentists often see dark or grey teeth linked to:
The cause may not always be obvious without examination
People with a dark or grey tooth may notice:
Sometimes the tooth feels normal despite the colour change.
It may be reasonable to monitor the situation if:
The colour change is stable
There is no pain or sensitivity
The tooth feels strong and functional
A dentist has advised observation
Monitoring involves watching for pain, sensitivity, or further colour change.
It’s sensible to book a dental visit if:
A tooth darkens suddenly
Pain or sensitivity develops
The tooth feels different when biting
You’re concerned about appearance
You’re unsure of the cause
Assessment helps determine whether the change is cosmetic or clinical.
Dentists typically:
Examine tooth colour and structure
Ask about past trauma or treatment
Test the tooth’s response
Take X-rays if needed
Explain findings and possible options
Assessment focuses on understanding the cause before discussing treatment.
A dark or grey tooth can have several explanations. While it doesn’t always indicate a serious problem, it should be checked to understand the cause.
Early assessment helps guide appropriate care and reassurance.
Clear, calm dental explanations to help you understand symptoms, treatments, and what to expect without pressure or judgment.
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Educational content only. Not a substitute for professional dental advice, diagnosis, or treatment.
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