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Pus Cavity Forming Under Tooth in Dogs

Tooth Root (Apical) Abcess in Dogs

Similar to humans, dogs can experience apical abscesses, or pus formations that form under or in the tissues surrounding the dog's tooth. 

Abscesses occur for a variety of reasons, cause extreme pain, and can be treated with much success. If left untreated, however, bacteria can spead into other areas of the mouth, causing serious medical conditions.

Apical abscesses affect both dogs and cats. If you would like to learn how this condition affects cats, please visit this page in the PetMD health library.

Symptoms and Types

You may notice one or more of the following signs when a dog is suffering from an tooth root abscess:

  • Bad breath
  • Loose teeth
  • Facial swelling
  • A visibly broken tooth
  • A strongly discolored tooth
  • An inability to chew
  • Increased presence of plaque on teeth

 

Causes

Periodontal disease can cause the formation of an abscess, which is more common in dogs that have a tendency to bite or chew frequently (e.g., puppies that play and tug frequently). If left untreated, facial or mouth traumas, bacterial infections, and diabetes can all contribute to the formation of an abscess.

Diagnosis

An oral and dental examination can identify if your dog has an abscess. Blood tests, on the other hand, can be used to determine if the abscess is caused by a more serious underlying medical condition.

 
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