Reviewed by Dr. Kari Badwi
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A tooth turning grey is usually a sign that the tooth has been affected by trauma. While this is often not painful, it is important to have the tooth evaluated to make sure it is healing properly and to rule out signs of infection.
Table of Contents
What Causes a Grey Tooth in a Toddler?
When a tooth is injured, even slightly, the blood supply and nerve tissue can be affected. This can lead to internal bleeding or breakdown of the tissue inside the tooth, which causes the grey or darkened appearance. There are a few different things that could cause this change.
Dental Trauma
Small falls, bumps, or hits to the mouth can disrupt the blood flow inside the tooth. This can create a bruise-like effect within the tooth, leading to a grey or purple colour that may appear days or weeks later.
Pulp Damage
If the inner tissue of the tooth is significantly affected, the pulp may no longer remain healthy. This can cause the tooth to darken over time. Some teeth remain stable, while others may require treatment if signs of infection develop.
Tooth Decay or Infection
In more advanced cases, decay or infection can lead to tooth discoloration. This is usually accompanied by other signs such as pain, swelling, or changes in the gums.
Genetics
Less commonly, developmental conditions can affect tooth colour. For example, a rare condition called dentinogenesis imperfecta can cause blue-grey, fragile teeth. These causes are uncommon, especially when only one tooth is affected.
Medications
Certain medications, such as tetracycline antibiotics, can affect tooth colour during development. This is uncommon and typically affects multiple teeth rather than a single tooth turning grey.
Is a Grey Tooth a Dental Emergency?
A grey tooth is not always an emergency, but it should be assessed.
Seek prompt dental care if you notice:
- Pain or sensitivity
- Swelling around the gums or face
- A pimple-like bump on the gums
- Fever or changes in behaviour
If your child is comfortable and there are no signs of infection, the tooth can be evaluated during a routine dental exam.
Evaluating Dental Injuries at BabyTooth
At BabyTooth Pediatric Dentistry, Dr. Kari Badwi uses a step-by-step approach to assess grey teeth. She examines the tooth and surrounding tissues, and may take digital X-rays to evaluate the root and supporting bone. This helps determine whether the tooth is healing normally or if monitoring or treatment is needed.
Pediatric Dentist in SE Calgary
If you have concerns about your child’s tooth, you can call our office and we will guide you on next steps based on your child’s symptoms.
To book an appointment at our pediatric dental office in SE Calgary, call (403) 873-1414 or visit us at 290 Midpark Way SE #200, Calgary, Alberta T2X 1P1.
FAQs
Can a grey baby tooth turn white again?
Yes, in some cases the colour may improve over time. In other cases, the colour change is permanent but harmless.
Is it a problem if a baby tooth stays grey?
Not always. Many grey baby teeth remain stable and do not require treatment. Your dentist may recommend monitoring the tooth to ensure there are no signs of infection or changes over time.
Does a grey tooth mean it is dead?
Not always. A grey tooth may still be stable and symptom-free, but it should be evaluated to confirm.
Should I take my toddler to the dentist after hitting their tooth?
Yes, even minor injuries should be assessed to ensure there is no underlying damage.
