Why Is My Tooth Turning Black?

October 15, 2025
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Noticing a black spot or discoloration on your tooth can be alarming. Not only do they affect your smile, but they also signal a dental problem. In this blog, we will discuss reasons why your tooth is turning black (or has already done so) and what you can do to treat it, and prevent it from happening in the future. Let’s dig into the details!

What Causes Teeth to Turn Black

There are several reasons a tooth may turn black. We go over several below:

1. Tooth Decay

When cavities are left untreated, they can eat away at the enamel and dentin layers of your teeth. As the decay spreads, your tooth can turn black. It can also be white, or brown in color, and often feels soft/rough. The dentist can confirm your suspicions with an exam and X-rays.

2. Stains from Food and Drinks

Many foods and drinks can stain your teeth over time. Common examples include coffee, tea, cola, red wine, and even dark berries. Smoking and tobacco use can also contribute to teeth staining.

3. Tartar Buildup

Plaque that is not cleaned properly hardens into tartar. This tartar can trap stains and bacteria, especially near the gumline. Over time, it can look dark brown or black. It must be scaled off by a dental professional.

4. Old Dental Restorations

Some dental materials, like old silver fillings or leaking restorations can make your tooth appear gray or black. New decay can form along the old margins. If they look darker than before, it is best to visit the dentist and get it checked.

5. Pulp Damage or Dead Tooth

If a tooth has been injured or is severely decayed, the nerve inside can die. This condition is called pulp necrosis. When this happens, your tooth can appear darker than usual.

How To Treat a Black Tooth

If you notice a black spot or discoloration on your tooth, don’t ignore it. Visit your dentist right away. They can find the right cause and provide possible treatment options. Some common treatment options include:

  • Professional Cleaning: If the discoloration is caused due to stains or tartar buildup, your teeth might need a professional cleaning.
  • Whitening Treatments: If the discoloration is from food, drinks, or smoking, professional teeth whitening may help restore your natural color.
  • Bonding or Veneers: If the stain is intrinsic, you might need bonding or custom veneers to get rid of the discoloration.
  • Root Canal Therapy: If decay or dead tissue is the cause, the dentist may advice you to get a root canal. They will clean and seal the tooth with a filling and crown.
  • Extraction: In severe cases, if the tooth is damaged beyond repair, your dentist might recommend a tooth extraction. Replacement options such as dentures or implants may be considered.

How to Prevent Black Teeth

Here are some easy ways to prevent black teeth:

  • Brush twice a day with fluoride toothpaste
  • Floss daily to remove plaque between teeth
  • Limit coffee, tea, cola, wine, alcohol, acidic drinks, and tobacco use
  • Visit your dentist as recommended for gum or decay risk (usually every 3-6 months)

Final Word

Black teeth can be caused due to several reasons, such as staining, decay, tartar buildup, old restorations, and pulp damage. However, there are multiple treatments to restore a black tooth, including professional cleaning and whitening, root canal, bonding, and veneers. In severe cases, extractions might be necessary.

If you notice any dark spots or changes in your teeth, schedule a dental visit with Dr. Arth Patel at The Dental Home of Moore for personalized advice. Call us at (405) 977-4238 to schedule a consultation!

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