Understanding Dog Tooth Discoloration: Causes, Prevention, and Treatment

Veterinarian examining dog tooth discoloration on a medium sized black dog.

Understanding Dog Tooth Discoloration: Causes, Prevention, and Treatment

As a pet owner, you may spend a lot of time caring for your dog’s coat, diet, and exercise. However, dental health, particularly tooth discoloration, is often overlooked. Dog tooth discoloration is not just a cosmetic issue—it can indicate underlying dental problems that may require attention. Learning the causes, prevention strategies, and treatment options can help ensure your dog maintains good oral health throughout its life.

What Causes Tooth Discoloration in Dogs?

Tooth discoloration in dogs is relatively common and can be caused by various factors, including:

  1. Dental Trauma: A sudden blow or injury to your dog’s mouth can damage the blood vessels within the teeth, leading to internal bleeding. This often causes the tooth to turn a pinkish or grayish color. Over time, the affected tooth may become dark brown or black, a sign that the tooth is no longer vital.
  2. Plaque and Tartar Buildup: Just like humans, dogs can experience plaque buildup from food particles and bacteria that are not removed through brushing. Plaque eventually hardens into tartar, which can cause yellow or brown discoloration of the teeth. This is one of the most common causes of tooth discoloration in dogs.
  3. Tooth Decay and Cavities: Cavities and other forms of tooth decay can lead to discoloration, especially if the enamel wears down, exposing the dentin beneath, which is naturally darker. If untreated, tooth decay can cause infection, pain, and more severe dental issues.
  4. Medications: Some medications, especially certain antibiotics like tetracycline, when given to young puppies, can affect developing teeth and result in discoloration. This type of staining is usually permanent and can range from yellow to brown.
  5. Age: As dogs age, their teeth naturally become more prone to wear and tear. Older dogs may develop discolored teeth due to years of exposure to bacteria, food, and other factors that affect enamel health.

Types of Tooth Discoloration and Meanings


The color of tooth discoloration in dogs can provide important clues about underlying dental or health issues. To summarize:

  • Yellow or brown discoloration typically indicates plaque and tartar buildup.
  • Gray or purple teeth often signal internal trauma or damage.
  • Black or dark brown teeth can indicate necrosis, meaning the tooth is no longer vital and could be a source of infection.
  • In rare cases, green discoloration may appear due to fungal infections or chemical exposure.

Preventing Tooth Discoloration

Prevention is always better than cure when it comes to dental health. Fortunately, there are several steps you can take to help prevent tooth discoloration in your dog:

  1. Regular Brushing: Brushing your dog’s teeth regularly with a dog-safe toothpaste is one of the most effective ways to prevent plaque and tartar buildup, which are leading causes of discoloration. Aim to brush your dog’s teeth at least two to three times a week.
  2. Dental Chews and Toys: Provide your dog with dental chews or toys specifically designed to help clean their teeth as they chew. These products can aid in removing food particles and plaque, promoting healthier teeth and gums.
  3. Routine Veterinary Checkups: Scheduling regular veterinary check ups that include dental exams is essential for spotting early signs of tooth discoloration and other dental issues. Your vet may recommend professional cleaning to remove plaque and tartar buildup.
  4. Proper Diet: Feeding your dog a diet that promotes good oral health can also make a difference. Some specially formulated dog foods are designed to reduce plaque buildup and support strong teeth. See the Veterinary Oral Health Council’s recommendation on dental-safe foods, treats, and toys.

Treatment for Tooth Discoloration

If you notice your dog’s teeth becoming discolored, it’s important to seek veterinary advice as soon as possible. Treatment options may include:

  1. Professional Cleaning: For cases of plaque and tartar buildup, a professional dental cleaning under anesthesia can remove the discoloration and restore your dog’s dental health.
  2. Extraction: In cases where a tooth is severely decayed or damaged due to trauma, extraction may be necessary to prevent infection and further complications.
  3. Root Canal: For dogs with internal tooth damage, such as those caused by trauma, a root canal may save the tooth. This treatment is more common in younger or otherwise healthy dogs where extraction may not be the best option.

Dog Dentist in Las Vegas

In summary, tooth discoloration in dogs should not be ignored, as it can be a sign of underlying health issues. By maintaining a regular dental care routine, including brushing, proper diet, and regular vet visits, you can help prevent tooth discoloration and keep your dog’s teeth and gums healthy. If you see signs of tooth discoloration on your pet’s teeth, contact our team today to book a consultation to determine the cause and treatment for your pet’s oral condition. A proactive approach to dental health can prevent future problems and improve their overall health and well-being. 



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