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Mouth Inflammation and Ulcers (Chronic) in Dogs

Oral Ulceration and Chronic Ulcerative Paradental Stomatitis in Dogs

 

Oral ulceration and chronic ulcerative paradental stomatitis (CUPS) is a disease of the mouth which causes painful ulcers on the gums and mucosal lining of the mouth cavity. The cause of this condition has been determined to be a hypersensitive immune response to bacteria and plaque on the tooth surfaces, and sometimes signs of CUPS will start subsequent to a dental cleaning, when these materials are loosened in the mouth.

 

While it appears that manipulation and antigenic stimulation (substances that stimulate the production of antibodies in the body) in the oral cavity may trigger stomatitis, it is also believed that such animals would probably have eventually developed the disease anyway. In some cases, the only resolution is to remove all of the teeth, so that the bacteria that is normally found on the surface of the teeth is no longer present in the mouth at all.

 

Certain breeds of dogs appear to be at higher risk for developing this disease. Maltese, cavalier king charles spaniels, cocker spaniels and Bouvier des Flandres have been found to have a higher incidence. One of the complications of CUPS is idiopathic osteomyelitis, inflammation of the bone and marrow, which cocker spaniels have been found to be predisposed to.

 

Symptoms and Types

 

  • Bad breath (halitosis)
  • Swollen gums (gingivitis)
  • Faucitis (inflammation of the cavity at the back of the mouth – the fauces)
  • Pharyngitis (inflammation of the back of the mouth, continuous into the larynx – the pharynx)
  • Buccitis/buccal mucosal ulceration (tissue of the inner cheeks)
  • Thick, ropey saliva (ptyalism)
  • Pain
  • Loss of appetite (anorexia)
  • Mucosal ulceration on the gums that meet the lips – also called "kissing ulcers"
  • Plaque on teeth
  • Exposed, necrotic bone (alveolar osteitis and idiopathic osteomyelitis)
  • Scar formation on lateral margins of the tongue from prolonged inflammation and ulceration

 

Causes

 

Metabolic

  • Diabetes mellitus
  • Hypoparathyroidism
  • Hypothyroidism
  • Uremia caused by renal disease

Nutritional

  • Protein-calorie malnutrition
  • Riboflavin deficiency

Neoplastic

Immune-mediated

Infectious

Traumatic

Chemical/Toxic

  • Acids
  • Thallium

Idiopathic

 

 

Diagnosis

 

You will need to give a thorough history of your dog's health, onset of symptoms, and possible incidents that might have precipitated/preceded this condition, such as chewing on cords or other inappropriate objects, recent illnesses, and the usual dental care that is provided. Your veterinarian will exam your dog's oral cavity carefully to determine the extent of the inflammation, or whether any of the teeth are obviously in need of care. Standard tests will include a chemical blood profile, a complete blood count, a urinalysis and an electrolyte panel in order to detect an underlying disease. Diagnostic imaging is also standard in diagnosing dental conditions. X-rays will be taken to determine bone involvement and judge the extent of idiopathic osteomyelitis.

 

Often chronic antigenic stimulation (from a chronic disease condition) will predispose an animal to development of oral ulceration and stomatitis. (Antigens are substances that stimulate the production of antibodies in the body.)

 

 

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