Why Do I Have a Black or Brown Spot on My Tooth?

Brown or black spots on teeth can be caused by factors like cavities, dietary stains, decay, fluorosis, tartar, aging, and some medical conditions, with treatment ranging from whitening to dental procedures depending on the cause.

What causes black or brown spots on teeth?

Tooth discoloration can appear in many forms—spots, blotches, streaks, or dots—and often has different underlying causes. While some are purely cosmetic, others may indicate tooth decay or enamel erosion.

1. Surface Stains (Extrinsic Stains)

These occur when pigments from dark or acidic foods and drinks (like coffee, tea, soda, red wine, and berries) stain the outer layer of the tooth enamel. Tobacco use is another major contributor to extrinsic staining.

These stains are usually treatable with professional teeth whitening, dental bonding, or veneers, depending on the severity.

2. Internal Tooth Discoloration (Intrinsic Stains)

These stains develop from within the tooth and are often more difficult to treat. Causes include:

• Trauma or injury to the tooth

• Certain medications (like tetracycline antibiotics)

• Excessive fluoride (fluorosis)

• Root canal infections or internal fractures

Treatment may involve restorative options such as crowns, veneers, dental bonding, or root canal therapy.

3. Cavities and Tooth Decay

One of the most common causes of brown or black spots is tooth decay. As cavities form, they break down enamel and expose the darker dentin beneath. Decay can also darken as it progresses or as the tooth’s pulp begins to die.

In this case, the discoloration isn’t just cosmetic—it’s a sign you need prompt treatment like a filling or root canal to preserve the tooth.

4. Tartar Buildup

When plaque hardens into tartar, it can leave yellow or brown deposits along the gum line. Tartar can’t be brushed away and must be removed by a dental hygienist.

5. Fluorosis

Fluorosis occurs when children consume too much fluoride while their teeth are developing. It often appears as white streaks or brown pits, especially on the back molars.

6. Celiac Disease

In some people, celiac disease can interfere with proper enamel development, leading to translucent teeth or white, yellow, or brown spots.

7. Aging

As you get older, enamel naturally thins, exposing the yellow dentin underneath. This can cause teeth to appear darker or more spotted over time.

 

Can brown or black spots be removed from teeth?

Black or brown spots that are not the result of a cavity can usually be removed through teeth whitening. Your best whitening option depends on the depth and severity of your staining. Surface stains that have not seeped beneath the outer layer of your teeth can often be treated with over-the-counter whitening products like toothpaste or strips. Deep extrinsic stains that have penetrated the enamel, however, require professional-strength whitening prescribed and applied by your dentist.

More extensive dental procedures will be necessary for removing black or brown spots that are the result of tooth decay or damage. Treatment may include a tooth filling or root canal to repair tooth decay or restorative procedures like crowns, veneers, or dental bonding to help cover stubborn staining and restore a clean, white surface.

How can I prevent brown or black spots on my teeth?

Prevention is the proverbial best medicine when it comes to avoiding black or brown spots on your teeth. Be sure to practice good oral hygiene, like brushing your teeth twice a day with fluoride toothpaste and flossing at least once a day. If possible, also brush your teeth, rinse your mouth, or drink water after eating or drinking. Avoid using nicotine products, and limit how many teeth-staining foods and beverages you consume.

Routine dental care should also be a priority. Twice-yearly dental cleanings and exams from a trained dental professional can help your dentist identify any potential areas of decay or staining, then recommend proper treatment to keep the area from worsening.

Dental Care at Dental Depot

Dental Depot provides comprehensive dental services—including cosmetic dentistry and restorative dentistry services—to patients of all ages. Whether you need to fill a cavity, erase surface stains with professional-grade whitening treatments, or create the smile of your dreams with veneers, we have you covered. A beautiful smile can change your whole outlook on life, and the team at Dental Depot is here and ready to help.

Dental Depot is committed to helping you keep your teeth clean and healthy for life. We believe exceptional dental care should also be affordable, accessible, and available for everyone in your family, no matter how hectic your schedule. With flexible scheduling, Saturday appointments, and even the option to schedule multiple appointments at the same time, Dental Depot makes it easy for you to receive the care you deserve. In addition to caring dentists and dental hygienists, our staff of experienced dental professionals includes periodontal specialists, orthodontists, and oral and maxillofacial surgeons, allowing us to provide a full range of dental services all at one convenient location.

To find your nearest Dental Depot location or to schedule an appointment, click here. Your best smile is waiting!